“SOME LIKE IT HOT”
By Group 1 Nicki Werner, Liz Lewis, Molly Sant, Jazmyn Ferguson
Best Internal Temperature for most organism is 20 to 40 degrees Celsius
Optimum- “the value or set of conditions, which results in the most favorable outcome”
Normal human body temp. is 37 degrees Celsius
SOME LIKE IT HOT
Most organisms can not survive in hot weather- hot temperatures change the shape of proteins
Proteins- molecules required for the survival, growth, and repair of all cells
When a protein loses it’s normal shape it can’t function. Ex. When an egg is heated, the clear molecules on the outside (albumin) change shape
SOME LIKE IT HOT
Usually cold temperatures do not destroy proteins- they slow the rate of chemical reactions
The rate of reactions determines the rate of energy use (metabolism)
Metabolism- The process by which organisms use energy
Slower metabolism reduces need for food (helps in hibernation)
0°C or lower; ice crystals form and cause irreparable damage on the cells.
SOME LIKE IT HOT
GROUP 2 SOME LIKE IT HOT
Maggie, Carly, Emma, and Bergen
Example of a poikilotherm
Cellular respiration – a chemical process that takes place in the cells of all organisms; where glucose and food molecules are broken down by chemical reactions that release energy; one of the main ways animals get energy
Poikilotherms – “cold-blooded” animals that include reptiles and fish
Homotherms – “warm-blooded” animals that include birds and mammals; can maintain a constant body temperature
VOCABULARY TERMS
Most organisms can tolerate only a narrow range of temperatures
Because of this they either need to live in moderate climates or adapt
- An example of adaptation is cellular respiration Poikilotherms have more trouble surviving in
extreme climates because they rely on the environment to keep a constant temperature
KEY CONCEPTS
Kera Bussey-SimsGussie FredericiAnkita Kanakadandila
SOME LIKE IT HOT
KEY CONCEPTS Poikilotherms
Are animals that have bodies with temperatures that rise when it is warm and fall when it is cold
When it is to cold, they burry themselves in the soil When it is hot, they lay in the shade When it is cold, metabolism slows and they are less
active Homeotherm
Maintain a constant body temperature Which is usually higher then the surrounding
temperature Homeotherm can live and work in temps below
freezing Heat always flows from warmer to cooler objects
VOCABULARY TERMS Poililotherms
Any animal species whose internal body temperature changes based on the temperature of if its surrounding Reptiles Insects
Homeotherms Any animal species that maintains a relatively
constant body temperature, regardless of its surroundings Mammals Birds
PICTURES
Figure 1.Rattelsnake-Poikilotherms
Figure 2.Caterpillar-Poikilotherms
Figure 3. Flamingo- homeotherms
HUMANS AND MANY OTHER HOMEOTHERMSAnjali Desai Caroline Murphy Elena Murawski
KEY CONCEPTS The human body regulates body temperature
by making changes People might get red or flushed if they get
hot because the brain signals the blood to travel to the vessels near the skin
When the body is cold, it can shiver. This causes movement and will get the blood flowing in the body
Also when the body is cold, hair or feathers will stick up from the body to trap air.
VOCABULARY WORDS Homestasis- the maintenance of stability in a
n organisms internal environment regardless of external changes.
Metabolic - the physical and chemical process in the body