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LIFE FUNCTIONS
A) nucleus B) cytoplasmC) mitochondrion D) ribosome
1. Materials are transported within a single-celledorganism by the
A) break down molecules into smaller componentsB) release energy to be used by the organismC) transport substances throughout the organismD) distribute blood to all of the parts of the
organism
2. The cytoplasm in a single-celled organism and thecirculatory system in a human both
A) The circulatory systemB) The respiratory systemC) The excretory systemD) The digestive system
3. The endocrine system releases hormones that travel totheir target organs through
A) digestion B) excretionC) fermentation D) transport
4. Which life process is indicated by the arrows in thediagram of an amoeba shown below?
A) A and C B) B and CC) C and D D) A and D
5. Which two activities in the chart below best describethe process of transport?
A) excretion B) transportC) respiration D) growth
6. The absorption of fluids by various cells of the humanbody is part of the life function known as
A) absorb and distribute materialsB) obtain and hydrolyze materialsC) release energy from foodD) produce cellular waste products
7. The life function of transport in an organism directlyinvolves those activities used to
A) synthesis B) reproductionC) transport D) locomotion
8. The absorption and distribution of materials within anorganism is a life function known as
A) transport B) respirationC) reproduction D) digestion
9. The passage of salts into and out of cells is mostclosely associated with the life process of
A) nutrition, reproduction, and regulationB) excretion, transport, and respirationC) growth, digestion, and locomotionD) ingestion, regulation, and synthesis
10. In the diagram to the right, the arrows show thedirection of movement of various substances. Whichof the cell's life activities are represented by thearrows?
A) absorption B) digestionC) circulation D) regulation
11. The passage of the end products of digestion into thecells of an organism is an example of
LIFE FUNCTIONS
A) absorption and circulationB) food processing and energy releaseC) energy release and synthesisD) coordination and regulation
12. In an Ameba, materials are taken from itsenvironment and then moved throughout itscytoplasm. These processes are known as
A) circulation B) absorptionC) transpiration D) assimilation
13. Transport in mammals generally involves absorptionand
A) amino acids B) simple sugarsC) energy D) enzymes
14. Organisms contain compounds such as proteins,starches, and fats. The chemical bonds in thesecompounds can be a source of
A) changed directly into proteinsB) transported out of the leaves through the guard
cellsC) transported downward toward the roots through
tubesD) changed into simple sugars
15. An iodine test of a tomato plant leaf revealed thatstarch was present at 5:00 p.m. on a sunny afternoonin July. When a similar leaf from the same tomatoplant was tested with iodine at 6:00 a.m. the nextmorning, the test indicated that less starch waspresent. This reduction in starch content most likelyoccurred because starch was
A) remove cellular waste productsB) obtain and process materials needed for other
activitiesC) exchange gases with their environmentD) absorb and circulate materials
16. Nutrition involves those activities by whichorganisms
A) transport B) synthesisC) growth D) nutrition
17. A hydra ingests a Daphnia, digests it, and later egestssome materials. All of these events are most closelyassociated with the life process known as
A) transport B) regulationC) fermentation D) photosynthesis
18. Which process is a form of autotrophic nutrition?
A) circulation B) reproductionC) absorption D) nutrition
19. Which life activity is suggested by the cartoonbelow?
A) hormonal regulationB) nutritionC) anaerobic respirationD) transport
20. Which life process is classified as autotrophic insome organisms and heterotrophic in otherorganisms?
A) photosynthesis B) regulationC) pinocytosis D) nutrition
21. The root-like rhizoids of fungi penetrate a source offood, secrete hydrolytic enzymes, and absorb the endproducts. These activities are all involved in theprocess of
LIFE FUNCTIONS
A) synthesis B) regulationC) nutrition D) growth
22. Stained yeast were added to a paramecium culture,and some of the yeast were ingested by theparamecium. This activity is most closely associatedwith which life function?
A) transpirationB) aerobic respirationC) intracellular digestionD) extracellular digestion
23. In autotrophic plants, stored starch may be convertedinto small organic molecules by the process of
A) swallowing B) water absorptionC) chemical digestion D) ingestion
24. Changing the pH value within the human digestivetract would have the greatest effect upon the processof
Base your answers to questions 25 and 26 on the information and diagram below and on yourknowledge of biology.
The setup below shows four test tubes. Tube 1 contains water only. Tube 2 contains a live snail.Tube 3 contains a live green water plant. Tube 4 contains both a live green water plant and a livesnail.
A) oxygen B) glucose C) DNA D) ATP
25. Which compound that directly provides energy in living cells is being produced in every tube wherecellular respiration is occurring?
A) tubes 1 and 2, only B) tubes 2 and 4, onlyC) tubes 3 and 4, only D) tubes 2, 3, and 4, only
26. In this setup, which tubes contain at least one organism carrying on cellular respiration?
LIFE FUNCTIONS
A) nervous B) reproductiveC) digestive D) respiratory
27. During gas exchange, the cell membrane of asingle-celled organism has the same function aswhich organ system in humans?
A) require the Sun as a direct source of energyB) result in the production of glucose moleculesC) require specific catalystsD) occur within mitochondria
28. Photosynthesis and respiration are alike in that theyboth
A) Digestive and circulatoryB) Digestive and respiratoryC) Respiratory and circulatoryD) Excretory and circulatory
29. The delivery of oxygenated blood to all tissuesaround the body involves what two life functions?
A) It occurs in animal cells but not in plant cells.B) It converts energy in food into a more usable
form.C) It uses carbon dioxide and produces oxygen.D) It stores energy in food molecules.
30. Which statement best describes cellular respiration?
A) chemical bonds between carbon atoms areformed during photosynthesis
B) energy stored in chemical bonds is releasedduring cellular respiration
C) energy stored in nitrogen is released, formingamino acids
D) digestive enzymes break amino acids intosmaller parts
31. ATP is a compound that is synthesized when
A) DNA B) starchC) hormones D) ATP
32. The energy an organism requires to transportmaterials and eliminate wastes is obtained directlyfrom
A) digestion B) hydrolysisC) photosynthesis D) respiration
33. By which process is the potential energy of organicmolecules transferred to a form of energy that isusable by the cells?
A) necessary nutrients are circulatedB) hydrogen is used to synthesize glucoseC) metabolic wastes are absorbedD) chemical energy is converted into a usable form
34. Respiration is best described as a process by which
A) growth B) respirationC) regulation D) excretion
35. Which process is represented by the arrow in thediagram below?
A) Respiration in autotrophic organisms occursonly during the day.
B) Fungi and monerans carry out aerobicrespiration only.
C) All living organisms carry out some form ofrespiration.
D) All autotrophs and heterotrophs require glucoseand oxygen for respiration.
36. Which statement regarding respiration is correct?
A) only during the nightB) only during the dayC) during both the night and the dayD) neither during the night nor during the day
37. When do green plants carry on cellular respiration?
A) It occurs only in plants during daylight hoursand usually involves an exchange of gases.
B) It occurs only in plants during daylight hoursand involves ingestion of preformed organicmolecules.
C) It occurs continuously in the cells of allorganisms and involves the synthesis of organicmolecules.
D) It occurs continuously in the cells of allorganisms and usually involves an exchange ofgases.
38. Which statement most accurately describes theprocess of respiration?
LIFE FUNCTIONS
A) release of oxygen as a waste productB) use of carbon dioxide to form sugarsC) transfer of chemical energy to a more usable
formD) enzymatic decomposition of inorganic
molecules
39. A final result of the process of respiration in animalsis the
A) photosynthesis B) respirationC) reproduction D) transpiration
40. An activity carried on by every living plant andanimal is
A) transport B) excretionC) regulation D) respiration
41. For survival, a hummingbird uses a considerableamount of energy. This energy most directly resultsfrom the life activity of
A) absorption B) circulationC) digestion D) respiration
42. Which life function is primarily involved in theconversion of the energy stored in organic moleculesto a form directly usable by a cell?
Base your answers to questions 43 and 44 on the diagram below, which represents a metabolicprocess, and on your knowledge of biology.
A) an antibody B) a hormone C) a receptor D) an enzyme
43. The letter X in the process represents
A) the bonding of amino acids to form a starch moleculeB) the digestion of amino acids to form a starch moleculeC) the bonding of simple sugars to form a starch moleculeD) the digestion of simple sugars to form a starch molecule
44. This process best represents
LIFE FUNCTIONS
A) It passes on hereditary information onlythrough asexual reproduction.
B) It carries out synthesis.C) It cannot perform metabolic processes.D) It is composed of a cell, but does not have
tissues.
45. Which observation could lead to the conclusion thatan object is nonliving?
A) Sugar B) LipidsC) Proteins D) genetic material
46. Which of the following is the primary nutrient usedin metabolism?
A) Mitochondria and chloroplasts, respectivelyB) Nucleus and chloroplasts, respectivelyC) The cell membrane and mitochondria,
respectivelyD) The cell membrane and the nucleus
47. Which of the following organelles carry out cellularrespiration and photosynthesis, respectively.
A) an increase in matter, but no increase in thenumber of icicles
B) an interaction between the icicle and theenvironment
C) no way for the icicle to move away from heatD) no metabolic activity present
48. The ability to grow in size is a characteristic ofliving organisms. Although an icicle may grow insize over time, it is considered nonliving becausethere is
A) diffusion synthesis active transportB) digestion diffusion cellular respirationC) digestion excretion cellular respirationD) synthesis active transport excretion
49. Arrows A, B, and C in the diagram below represent the processes necessary to make the energystored in food available for muscle activity.
The correct sequence of processes represented by A, B, and C is
LIFE FUNCTIONS
A) metabolic activitiesB) autotrophic nutritionC) heterotrophic nutritionD) sexual reproduction
50. Every single-celled organism is able to survivebecause it carries out
A) metabolism B) nutritionC) regulation D) synthesis
51. Which term is defined as all the chemical reactionsthat are required to sustain life?
A) A and B, only B) B and C, onlyC) A and C, only D) A, B, and C
52. Which reactions in the list below are associated withmetabolism?(A) cellular reactions that release energy(B) photosynthetic reactions that store energy(C) muscle reactions that use energy
A) carbon atomsB) oxygen atomsC) metabolic activitiesD) chemical reactions
53. Living organisms can best be distinguished fromnonliving things by determining the presence orabsence of
A) growth B) excretionC) metabolism D) nutrition
54. Which term includes all the activities required tokeep an organism alive?
A) regulation B) metabolismC) homeostasis D) synthesis
55. Which term is used to represent all of thephysiological activities carried on by an organism?
A) cellular organizationB) inheritanceC) nutritionD) metabolism
56. The breathing rate, heart rate, and blood hormonelevels of a human would most likely provideinformation about human
A) number of mutations in the organismB) reproductive cycle of the organismC) development of the organismD) metabolism of the organism
57. A biologist would most likely study all the chemicalactivities of an organism to obtain information aboutthe
A) synthesis B) metabolismC) excretion D) nutrition
58. Which process includes the other three?
A) specialized antibioticsB) hormonesC) saltsD) biological catalysts
59. In living cells, chemical processes, such as synthesis,all require the action of
A) 1 B) 2 C) 3 D) 4
60. Which row in the chart below contains correctinformation concerning synthesis?
A) proteins, water, DNA, fatsB) proteins, starch, carbon dioxide, waterC) proteins, DNA, fats, starchD) proteins, carbon dioxide, DNA, starch
61. Which group contains only molecules that are eachassembled from smaller organic compounds?
A) digestive and circulatoryB) excretory and digestiveC) immune and muscularD) reproductive and circulatory
62. Which two systems are most directly involved inproviding molecules needed for the synthesis of fatsin human cells?
LIFE FUNCTIONS
A) They are both wastes resulting from proteinsynthesis.
B) They are both building blocks of starch.C) They are both needed for the synthesis of larger
molecules.D) They are both stored as fat molecules in the
liver.
63. Which statement concerning simple sugars andamino acids is correct?
A) synthesisB) locomotionC) anaerobic respirationD) extracellular digestion
64. Which activity is a function of all living cells?
A) egestion B) respirationC) growth D) synthesis
65. Enzyme molecules are produced by the life functionknown as
A) synthesis B) pinocytosisC) hydrolysis D) cyclosis
66. In which process are simple materials chemicallycombined to form more complex materials?
A) regulation B) respirationC) synthesis D) excretion
67. In plants, glucose is converted to cellulose, and inhuman muscle cells, glucose is converted toglycogen. These processes are examples of whichlife activity?
A) absorption from special mineral soilsB) hydrolysis of chlorophyll moleculesC) synthesis from simpler compoundsD) condensation on leaf surfaces
68. The oil of the vanilla bean and the oil of mint areflavorings found naturally in these plants. Theseflavorings are present in the plant cells as a result of
A) ingestion B) synthesisC) regulation D) hydrolysis
69. Organisms combine simple molecules to formcomplex molecules by the process of
A) digestion B) excretionC) respiration D) synthesis
70. As a direct result of which life process does a plantmake a variety of chemical substances such aspoisons, drugs, and flavorings
A) An organic compound is broken down andenergy is released.
B) Starch is formed by the chemical bonding ofglucose molecules.
C) A large molecule is broken down into smallermolecules.
D) Oxygen moves into a cell through the cellmembrane.
71. Which activity is an example of the life processknown as synthesis?
A) regulation B) synthesisC) respiration D) excretion
72. Proteins not ingested by humans are found in humancells. The presence of these proteins is most directlya result of
A) ingestion B) digestionC) transport D) synthesis
73. In the earthworm, digested proteins are converted tonew proteins by the process of
A) control the rate of muscle activityB) increase muscle strengthC) maintain homeostasisD) eliminate the release of heat from the body
74. Increased concern over the number of heat-relatedillnesses among football players has led to a possiblechange in uniform design. Shoulder pads weredesigned that constantly blew cool, dry airunderneath the shoulder pads. Tests showed that theuse of the device during rest and recovery periodsresulted in a reduction of body temperature and heartrate. This new device would help the athlete to
LIFE FUNCTIONS
A) A plant wilts when more water is lost from theleaves than is lost by the roots.
B) A plant turns yellow when light levels are verylow
C) Insulin is released when glucose levels in theblood are high.
D) A person sweats when the environmentaltemperature is low.
75. Which change is an example of maintaining dynamicequilibrium?
A) a disruption in the absorption of starchB) an increase in blood volumeC) a decrease in oxygen levelsD) an imbalance in homeostasis
76. Energy drinks have become increasingly popular.Some of these drinks contain large amounts ofcaffeine, which is known to increase heart rates inmost individuals. This effect on the heart rate can bedangerous because it can lead to
A) store the glucose in cell nucleiB) release a hormone that lowers the blood glucoseC) produce a hormone that destroys the glucoseD) use the excess glucose to make proteins
77. In response to an increasing blood glucose level, thehuman body will normally
A) all single-celled organisms contain contractilevacuoles, a flagellum, and chloroplasts
B) single-celled organisms contain structures thatfunction in maintaining homeostasis
C) the organs found in complex organisms evolvedfrom these three structures
D) multicellular organisms do not contain any cellstructures
78. The chart below contains information about somestructures found in single-celled organisms
The information in this chart best illustrates thebiological concept that
A) reacts to an antibodyB) develops genetic variation in body cellsC) maintains cellular organizationD) maintains dynamic equilibrium
79. When the human body is responding to stress, thehormone adrenaline is released. A short time later,the body returns to normal. This is an example ofhow a human
LIFE FUNCTIONS
Base your answers to questions 80 through 83 on the diagram below and on your knowledge ofbiology. This diagram represents the roles of different parts of the human body in keeping blood sugarat a balanced, normal level over time.
A) stop using enzymes in body system X B) stop organ Y from producing hormone AC) start to increase synthesis of hormone B D) start to increase synthesis of hormone A
80. If body system X temporarily stops releasing sugar into the blood, a likely response of the bodywould be to
A) increase the production of hormone AB) remove organ Y from the body surgicallyC) reduce the carbohydrates in body system XD) reduce the synthesis of enzymes in organ Y
81. If organ Y becomes unable to produce enough hormone B, then homeostasis would be disrupted. Torestore homeostasis and compensate for the lack of hormone B, one useful action would be to
A) more hormone A, only B) more hormone B, onlyC) more hormone A and more hormone B D) no hormone A and no hormone B
82. When body system X releases too much sugar into the blood, the body can maintain homeostasis bymaking
A) 1 B) 2 C) 3 D) 4
83. The diagram shows human body structures that are coordinated to maintain homeostasis. Which rowcorrectly identifies the function of these structures?
LIFE FUNCTIONS
A) detection of and reaction to stimuli in theenvironment
B) digestion of starches and absorption of proteinfrom the internal environment
C) diffusion of water and excretion of glucose tothe external environment
D) transport of ATP and locomotion through theenvironment
84. In humans, the maintenance of a stable internaltemperature is a direct result of
A) the regulation of water loss by guard cells inplant leaves
B) the digestion of carbohydrates by enzymesC) using ATP for the diffusion of waterD) glucose production in the pancreas
85. An individual walks out of his air-conditioned(75°F) home into the hot outside environment(85°F). His ability to adjust to this changingenvironment involves a mechanism similar to
A) increased genetic variationB) the maintenance of homeostasisC) a reduction in competitionD) increased autotrophic nutrition
86. The diagram below shows cell A completing a lifeprocess.
Cell A performs functions similar to the tissues andsystems in complex, multicellular organisms. Thisprocess results in
A) an immune responseB) genetic differences between individualsC) an adaptation to global warmingD) dynamic equilibrium
87. A person usually experiences small variations inbody temperature over a 24-hour period. Thesevariations in temperature are an example of
A) diffusion B) synthesisC) respiration D) homeostasis
88. Bumblebees show some ability to control their ownbody temperature. During cold weather, bumblebeeshave been observed warming their flight muscles byshivering. The bees are able to maintain a bodytemperature several degrees above that of thesurrounding air. Regulation of their internal bodytemperature is an example of
A) maintenance of dynamic equilibriumB) failure of homeostasisC) reaction of white blood cells to a pathogenD) oxygen carrying capacity of the blood
89. The graph below shows changes in the level ofglucose in the blood of a person over a period oftime.
The graph represents the
LIFE FUNCTIONS
A) They produce antibiotics that fight disease.B) They are useful in the digestion of oxygen.C) They use all of the DNA present in the cells of
the body.D) They perform specific functions that aid in
maintaining homeostasis.
90. The diagram below represents some structuresobserved in a drop of human blood.
Which statement correctly describes all of thesestructures in human blood?
A) have multiple organ systemsB) work with other cellsC) contain structures that perform life functionsD) carry out photosynthesis to produce food
91. Single-celled organisms are able to maintain internalstability because they
A) interfere with homeostasisB) maintain dynamic equilibriumC) coordinate enzyme productionD) regulate digestion of protein
92. The action of insulin on sugar levels in the bloodhelps to
A) All of the cells of an organism infected bypathogens become pathogens.
B) Pathogens cannot be controlled once they enterthe cells of an organism.
C) Pathogens produce antibodies that will kill thehost organism.
D) Pathogens can interfere with normal lifefunctions.
93. Which statement best describes why pathogens areharmful?
A) A and B, only B) B and C, onlyC) C and A, only D) A, B, and C
94. Some processes that occur in a cell are listed below.
A. utilize energyB. detect changes in the environmentC. rearrange and synthesize chemical compounds
Which processes will all living organisms use tomaintain homeostasis?
A) reproductive successB) gene manipulationC) differentiationD) disease
95. The failure of the human body to effectivelymaintain dynamic equilibrium can result in
A) production of oxygenB) division of the cellC) removal of wastesD) production of receptor molecules
96. In order for the human body to maintainhomeostasis, the breakdown of glucose to releaseenergy must be followed by the
LIFE FUNCTIONS
A) an energy cycle B) recycling of inorganic materialsC) a feedback mechanism D) a learned behavior
97. The diagram below represents a sequence of events that occurs in the human body throughout theday.
These events can best be described as an example of
A) active transport B) maintenance of homeostasisC) synthesis of nutrients D) differentiation
98. The diagram below represents an activity that occurs in the human body.
This diagram best illustrates
A) develop organ systemsB) produce identical offspringC) maintain internal stabilityD) synthesize only inorganic matter
99. One characteristic of all living things is that they
A) organs B) systemsC) tissues D) organelles
100. Homeostasis is maintained in a single-celledorganism by the interaction of
A) recycling of gasesB) cellular respirationC) gene malfunctionD) a feedback mechanism
101. Sweating is a process that helps cool the bodyduring strenuous exercise. This is an example of
A) a disruption of homeostasisB) a decrease in allergic reactionsC) an increased number of cell organellesD) hormone destruction
102. The disease known as malaria may result in a fever,a decrease in red blood cells, and an enlarged liverand spleen. These symptoms are evidence of
LIFE FUNCTIONS
A) environmental factors causing gene mutationin plants
B) finite resources acting as selecting agents forevolution
C) a feedback mechanism for maintaininghomeostasis
D) differentiation in plants as a result of stimuli
103. On hot, dry days, guard cells often closemicroscopic openings in plant leaves, conservingwater. This is an example of
A) produce light energyB) maintain homeostasisC) decompose organic matterD) synthesize mineral
104. The leaves of a plant are dotted with openingsknown as stomata. When open, stomata allow theplant to exchange gases and allow moisture toevaporate, helping to draw water from the roots upinto the plant. These activities help the plant to
A) cellular communicationB) cycling of energyC) aging of the organismD) recombination of chromosomes
105. The maintenance of homeostasis in the body ismost directly related to
A) nutritionB) cell reproductionC) dynamic equilibriumD) digestion
106. The human body has the ability to keep blood-sugarlevels within a fairly narrow range, despite theintake of meals high in sugar. What concept doesthis illustrate?
A) digestion B) feedbackC) reproduction D) evolution
107. Which process is most directly responsible formaintaining internal stability in an organism whenits environment is constantly changing?
LIFE FUNCTIONS
A) an allergic reaction B) nutritionC) maintenance of dynamic equilibrium D) photosynthesis
108. The graph below shows the levels of glucose and insulin in the blood of a human over a period oftime.
This graph represents
A) the maintenance of homeostasisB) respiration, onlyC) excretion, onlyD) the digestion of proteins
109. The arrows in the diagram below indicate themovement of materials into and out of asingle-celled organism.
The movements indicated by all the arrows aredirectly involved in what process?
A) the presence of hormones that keep the bloodsugar level steady
B) the maintenance of a constant bodytemperature
C) cell division that is involved in normal growthD) a rapid rise in the number of red blood cells
110. Which situation indicates that a disruption ofhomeostasis has taken place?
A) Chloroplasts take in more nitrogen, whichincreases the rate of photosynthesis.
B) Chloroplasts release more oxygen in responseto a decreased rate of photosynthesis.
C) Guard cells change the size of leaf openings,regulating the exchange of gases.
D) Guard cells release oxygen from the leaf atnight.
111.Which process illustrates a feedback mechanism inplants?
A) determine the diversity necessary for evolutionto occur
B) direct the synthesis of altered genes that arepassed on to every cell in the body
C) regulate the shape of molecules involved incellular communication
D) keep the internal body environment within itsnormal range
112. Feedback interactions in the human body areimportant because they
A) The guard cells close the openings in leaves,preventing excess water loss from a plant.
B) White blood cells increase the production ofantigens during an allergic reaction.
C) Increased physical activity increases heart ratein humans.
D) The pancreas releases insulin, helping humansto keep blood sugar levels stable.
113. Which statement does not describe an example of afeedback mechanism that maintains homeostasis?
LIFE FUNCTIONS
A) cellular communication involving the action ofnerve cells and receptor sites
B) an increase in rate of growth due to a lowconcentration of water
C) maintenance of a dynamic equilibrium throughdetection and response to stimuli
D) a response to one biotic factor in theenvironment
114. When a certain plant is without water for anextended period of time, guard cells close openingsin the leaves of the plant, conserving water. Whatdoes this illustrate?
A) the maintenance of homeostasisB) photosynthesis, onlyC) excretion, onlyD) the digestion of minerals
115. The arrows in the diagram below indicate themovement of materials into and out of asingle-celled organism.
The movements indicated by all the arrows aredirectly involved in
A) Guard cells contribute to the regulation ofwater content in a geranium plant.
B) Water passes into an animal cell causing it toswell.
C) The release of insulin lowers the blood sugarlevel in a human after eating a big meal.
D) A runner perspires while running a race on ahot summer day.
116. Which situation is not an example of themaintenance of a dynamic equilibrium in anorganism?
A) storing genetic informationB) carrying out the circulation of materialsC) extracting energy from nutrientsD) coordinating system interactions
117. Hormones and secretions of the nervous system arechemical messengers that are responsible for doingwhat?
A) synthesis B) homeostasisC) excretion D) locomotion
118. When a person does strenuous exercise, smallblood vessels (capillaries) near the surface of theskin increase in diameter. This change allows thebody to be cooled. These statements best illustrate
A) interdependence B) homeostasisC) synthesis D) recombination
119. Organisms undergo constant chemical changes asthey maintain an internal balance known as
A) predationB) homeostasisC) antibiotic resistanceD) autotrophic nutrition
120. Both a deer and a tree react to changes in theirexternal surroundings, helping them to maintain aconstant internal environment. This statementdescribes
A) Growth rates within organs become equal.B) The organism becomes ill or may die.C) A constant sugar supply for the cells is
produced.D) The water balance in the tissues of the
organism stabilizes.
121. What usually results when an organism fails tomaintain homeostasis?
LIFE FUNCTIONS
A) Antibody production will increase.B) The person will move to an ecosystem with a
lower sodium level.C) The nutritional relationships between humans
and other organisms will change.D) An adjustment within the human body will be
made to restore homeostasis.
122. The normal sodium level in human blood is 135mEq/L. If a blood test taken immediately after ameal reveals a sodium level of 150 mEq/L, whatwill most likely result?
A) a stable rate of metabolismB) a disturbance in homeostasisC) a change in the method of cellular respirationD) a change in the function of DNA
123. If a human system fails to function properly, whatis the most likely result?
A) synthesis B) respirationC) pinocytosis D) homeostasis
124. Normally, when the concentration of glucose in theblood falls below a certain level, stored glucosere-enters the blood until the original concentrationis reached again. What is this process of regulatingthe concentration of blood glucose an example of?
A) homeostasis B) synthesisC) respiration D) excretion
125. When a duck dives into cold water, the capillariesin its skin constrict and move deeper below thesurface of the skin. This reaction is an example of
A) transport B) metabolismC) homeostasis D) nutrition
126. In a changing external environment, an organismmust be able to maintain relatively constant internalconditions. This maintenance of a stable internalenvironment is known as
A) homeostasis B) hydrolysisC) cyclosis D) peristalsis
127. An animal maintains its fluid balance by regulatingthe gain and loss of water. This maintenance is anexample of
A) maintenance of homeostasisB) an antigen-antibody reactionC) an acquired characteristicD) environmental factors affecting phenotype
128. During a race, the body temperature of a runnerincreases. The runner responds by perspiring,which lowers body temperature. This process is anexample of
A) digestion B) synthesisC) respiration D) homeostasis
129. What is maintenance of the pH of human bloodwithin a certain range known as?
A) A shark swims toward a highly polluted regionof the ocean.
B) A desert rattlesnake enters an undergroundburrow on a hot summer day.
C) Roots of a willow tree grow away from amoisture-rich region of the soil.
D) A polar bear sheds most of its fur during thecoldest months of the winter.
130. Which statement best describes an activity that willcontribute to the maintenance of homeostasis in anorganism?
A) homeostatic controlB) egestionC) reproductionD) growth of cells
131. When an individual goes without eating for a day,his or her blood sugar level remains about the samethroughout the day. This relatively constantcondition is maintained by
A) ingestion B) secretionC) pinocytosis D) excretion
132. As a result of their metabolic activities, manyorganisms produce harmful substances. Thesesubstances are eliminated by the process of
A) egestion B) secretionC) excretion D) oxidation
133. The process that removes metabolic waste productsfrom an organism is known as
LIFE FUNCTIONS
A) metabolic wastes from a cellB) toxic wastes by the process of cyclosisC) water molecules from dipeptide hydrolysisD) undigested material from the digestive tract
134. Excretion is best described as the removal of
A) regulation B) nutritionC) respiration D) excretion
135. The removal of carbon dioxide and nitrogenouswastes from an organism illustrates the lifefunction known as
A) excretion B) egestionC) digestion D) synthesis
136. Which process reduces the concentration of urea inthe blood of humans?
A) a feedback mechanismB) a genetic mutationC) an organ malfunctionD) an allergic reaction
137. Plants that live in hot, dry climates have evolvedmechanisms to help conserve limited watersupplies. One example is the closing of leafopenings by guard cells during the day to decreasewater loss from their leaves. This detection of andresponse to an environmental stimulus is anexample of
A) immune systemB) reproductive systemC) digestive systemD) nervous system
138. The list below includes three organ systems that aredirectly used when a human runs.
circulatory system
muscular system
skeletal system
Which system should also be included in the list?
A) Excretion B) RegulationC) Synthesis D) Reproduction
139. After eating a meal, blood sugar levels are elevated.The body secretes hormones to help absorb excesssugar into cells and return blood sugar levels tonormal. This is an example of
A) Organism A contains tissues while organism Blacks tissues.
B) Organism A and organism B have the sameorgans.
C) Organism A and organism B have structuresthat allow them to maintain homeostasis.
D) Organism A lacks structures that maintain adynamic equilibrium, while organism B hasthese structures.
140. Two organisms are represented below.
Which statement concerning organism A andorganism B is correct?
A) regulation B) excretionC) growth D) transpiration
141. A graphic organizer is represented in the diagrambelow.
The letter X most likely represents the term
LIFE FUNCTIONS
A) regulation B) reproductionC) excretion D) nutrition
142. The life function responsible for the coordinationand control of all life activities in an organism isknown as
A) regulation B) transportC) nutrition D) excretion
143. Which life function is most directly involved in thecontrol of the muscles of an earthworm that ismoving from dry to moist soil?
A) cell structure regulationB) regulationC) chemical digestionD) egestion
144. A student collected and recorded data on theresponse of an earthworm to varying amounts oflight. The data collected would most likely provideinformation about earthworm
A) respiratory and reproductive systemsB) skeletal and excretory systemsC) nervous and endocrine systemsD) circulatory and digestive systems
145. Homeostatic regulation of the body is madepossible through coordination of all body systems.This coordination is achieved mainly by
A) nutrition B) reproductionC) regulation D) excretion
146. Which life function is not necessary for anindividual organism to stay alive?
A) estrogen, insulin, and progesteroneB) testosterone, estrogen, and insulinC) progesterone, ATP, and testosteroneD) estrogen, progesterone, and testosterone
147. Three human hormones most directly involved insexual reproduction are
A) It is not necessary in order for the individualto survive.
B) The offspring are identical to the parent.C) It is necessary in order for the individual to
survive.D) The offspring are identical to each other.
148. Which statement concerning sexual reproduction iscorrect?
A) digestion B) excretionC) circulation D) reproduction
149. Rabbits have evolved strategies that get themthrough periods of time when there is little food.The diagram below represents essential lifefunctions that rabbits need to perform.
Which life function in the diagram could beeliminated without affecting an individual rabbit'sability to survive when food is scarce?
LIFE FUNCTIONS
150. The table below indicates a reproductive pattern insome sea turtles when eggs develop in areas withdiffering temperatures.
A) determined only by genes inherited from theparent turtles
B) controlled entirely by the location where theyoung are raised
C) a result of genetic information beinginfluenced by environmental conditions
D) an identical pattern to the reproductive patternfound in humans
The sex of turtle offspring is most probably
A) no living thing can cause a diseaseB) proteins are inorganic moleculesC) prions contain all of the material needed to
reproduceD) prions cannot carry out reproduction
independently
151. Prions are proteins that act as an infectious agent.They cause a variety of diseases, including “MadCow” disease. Prions cannot produce more prionson their own, but cause the host organism toreplicate more prions. Most scientists do notconsider prions to be alive. A valid reason foraccepting that prions are nonliving things is that
A) the differentiation of mature body cellsB) feedback mechanisms removing damaged
cellsC) modification of gene activity in cellsD) the internal environment being kept within
certain limits
152. Breathing rate is constantly being monitored andadjusted in the human body, which results in
153. Base your answer to the following question on Thediagram below represents a developing bird egg.
A) food supply for predators to preserve predatorpopulations
B) adaptation to allow maximum freedom forparent birds
C) continuation of the species throughreproduction
D) preservation of the exact genetic code of theparent birds
What is the primary function of this egg?
A) A dog consumes a bowl of food.B) An ameba moves away from bright light.C) A bean seed germinates.D) Two monosaccharides are formed from a
disaccharide.
154. Which statement best illustrates the life process ofgrowth?
A) the detection of DNA and enzymes in thesample
B) a change in the color of the sample whenexposed to air
C) a change in the temperature of the sampleD) the release of gases from the sample
155. A sample of matter is obtained from very deep inthe ocean. On what basis would a scientist mostlikely determine that the sample originated fromliving tissue?
A) nutrition B) respirationC) reproduction D) synthesis
156. Which life activity is not required for the survivalof an individual organism
Biology (Living Environment)
Name _________________ Class _________________ Date _________
1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.31.32.33.34.35.
36.37.38.39.40.41.42.43.44.45.46.47.48.49.50.51.52.53.54.55.56.57.58.59.60.61.62.63.64.65.66.67.68.69.70.
71.72.73.74.75.76.77.78.79.80.81.82.83.84.85.86.87.88.89.90.91.92.93.94.95.96.97.98.99.100.101.102.103.104.105.
106.107.108.109.110.111.112.113.114.115.116.117.118.119.120.121.122.123.124.125.126.127.128.129.130.131.132.133.134.135.136.137.138.139.140.
Biology (Living Environment)
Name _________________ Class _________________ Date _________
141.142.143.144.145.146.147.148.149.150.151.152.153.154.155.156.
