Which answer puts the steps of the scientific method in the correct order to solve a problem?

1. DACBE2. DBACE3. DABCE4. DBCAE

A. If the problem was the yeast, then the bread should rise when I use the new yeast.

B. Maybe the yeast that I used had gone bad.C. I will remake the bread using a new jar of yeast.D. The bread did not rise.E. On my second attempt the bread did rise so it is

likely that the old yeast was bad.

Which answer below is a hypothesis for the validity of echinacea?1. Does echinacea reduce the duration and

symptoms of the common cold?2. Echinacea reduces the duration and severity

of the symptoms of the common cold. 3. If echinacea acts as above, then patients

treated with echinacea at the first sign of cold symptoms should recover faster than untreated patients.

4. None of the above.

Which answer below would strengthen your experimental

design?1. Use a large sample size with a control.2. Use a small sample size and only look at the affects

on men.3. Use a large sample size and don’t worry about any

control—its irrelevant.4. Use a large sample size.

When you eat a candy bar you are eating mostly simple sugars. If you eat a candy bar while watching a movie, how will your body utilize those sugars?

1. All of the sugars will be used immediately by your working muscles.

2. The sugars will likely be stored as glycogen.

3. The sugars will likely be stored as fat.4. Both 2 and 3 are correct.

Which food below will maintain high blood sugar levels for the longest period of time?

1. Candy bar

2. Honey

3. Apple

4. Potatoes

In making a homemade salad dressing you mix olive oil, vinegar, and water together.  You notice when you add the vinegar to the water it mixes immediately.  When you add the olive oil it floats on top of the solution.  The vinegar is ____________ and the oil is ____________.

1. hydrophobic; hydrophilic2. acidic; basic3. hydrophilic; hydrophobic4. basic; acidic

The polysaccharides starch and cellulose are both made of glucose. Why can’t the enzyme salivary amylase breakdown both?

1. The orientation of the covalent bonds are different.

2. The active site of the enzyme cannot bind to glucose.

3. The enzyme cannot digest cellulose at normal body temperatures (32oC).

4. The covalent bonds in cellulose are stronger than in amylose.

Lactase cannot function properly in this example because the….

1. shape is incorrect.

2. amino acid sequence is incorrect.

3. color is incorrect.

4. 1 and 2

What is the complimentary strand to this strand: CCCCTTAGGAACC?

1. CCCCTTAGGAACC

2. GGGGTTAGGAACC

3. GGGGAATCCTTGG

4. GGTTCCTAAGGCC

Which sequence below is the RNA synthesized from the DNA sequence below:CCCCTTAGGAACC

1. GGGGAATCCTTGG

2. CCCCTTAGGAACC3. GGUUCCUAAGGGG4. GGGGAAUACCUUGG

Which component of a DNA macromolecule will dictate

instructions to the cell?1. The order of sugars (deoxyribose) in the DNA.2. The order of phosphates in the DNA.3. The order of bases (A,G,T,C) in a DNA.4. All of the above

Which answer below will base pair with the DNA sequence below?

TAT TAG TAG GTTA

1. ATAATCATCCAAT2. AUAAUCAUCCAAU3. ATTGGATGATTAT4. TATTAGTAGGTTA

Which answer below represents the mRNA strand copied from the

DNA strand below?TAT TAG TAG GTT

1. UAU UAC UAC CUU2. AUA AUC AUC CAA3. ATT GGA TGA TTA4. ATA ATC ATC CAA

Which gene would you expect to be expressed in a brain cell but not

in the cells of the liver?1. Alcohol dehydrogenase (alcohol

breakdown)2. N-Cam (neural cell adhesion molecule)3. RNA polymerase (transcription)4. DNA polymerase (DNA replication)

Which feature below is not found in a prokaryote?

1. Plasma membrane

2. Nucleus3. Ribosomes4. Cell wall5. Flagellum

Why does oil not mix with water but instead spontaneously forms spheres?

1. The oil is maximizing the amount of surface exposed to water.

1. The oil is hydrophobic and the water is hydrophilic

1. The oil becoming less hydrophobic.

1. The oil is becoming more hydrophobic.

Which statement is false about the fatty acid tails of a phospholipid?

1. They are hydrophobic.2. They cannot interact with ions

(Na+, K+).3. Small molecules like oxygen can

slip between them.4. They interact with water.

Which arrow indicates a protein or part of a protein that is hydrophobic?

1. Arrow A2. Arrow B3. Arrow C4. Arrow D

A

B

C

D

A normal cell has a high concentration of potassium on the inside and a low concentration of potassium on the outside. Also, a normal cell has a low concentration of sodium on the inside and a high concentration on the outside. Yet, the net movement of potassium is into the cell and the net movement of sodium is out of the cell. What type of transport is involved?

1. Osmosis2. Facilitated transport3. Active transport4. Simple diffusion5. Secondary active

transport

Which statement about mitochondria is false?

1. Mitochondria are surrounded by two membranes.

2. Mitochondria make energy of the cell (ATP).3. You inherited half of your mitochondria from

your mother.4. Mitochondria are found in both plant and

animals cells

Which cell type contains the most mitochondria per cell?

1. Liver2. Muscle3. White blood cell4. Dermal cell5. White adipose cell6. Red blood cell

Almost all eukaryotic organisms derive energy directly or indirectly from the sun. Therefore, which organelle is the most important for life as we know it?

1. Nucleus2. Endoplasmic

reticulum3. Golgi4. Chloroplast5. Mitochondria

Plants convert the energy of the sun into covalent bonds in carbohydrates using a process called ________.

1. Photosynthesis

2. Cellular respiration

3. Fermentation

4. Carbon fixation

Given that every energy conversion is inefficient, which type of food below would feed the most people?

1. Steak

2. Fish

3. Rice

4. Ice cream

UV light can damage the DNA in your cells, while visible light cannot. Why?

1. UV light has a longer wavelength than visible light.

2. The wavelength of UV light is within the visible spectrum.

3. UV light contains more energy than visible light.

4. UV light contains less energy than visible light.

Review: Which answer is an example of a molecule with high potential energy?

1. ATP2. NADP+

3. H2O

4. Both 1 and 3

What component of photosynthesis is directly responsible for the increased weight of the plant?1. Photosystem 1

providing ATP

2. Photosystem 2 providing NADPH

3. Calvin Cycle fixing carbon

4. 1 and 2

Reminder: The energy used by plants and animals ultimately came from…

1. Food2. Soil3. Sun4. Air

Which answer below might decrease your energy levels and make you feel fatigue easily?1. Low levels of glucose in your

blood (need to eat)2. Malfunctioning mitochondria

due to a genetic disorder3. Low levels of oxygen in the air4. All of the above

Plants have both chloroplasts and mitochondria. Why?

1. The mitochondria also synthesize sugars.2. The mitochondria are used to convert

oxygen to carbon dioxide for the plant.3. The mitochondria break down sugars

produced by photosynthesis to provide energy for the cellular work of the plant.

4. The mitochondria break down fat produced by photosynthesis to provide energy for the cellular work of the plant.

Which activity below would produce lactic acid via anaerobic respiration?

1. Sprinting 1 mile2. Swimming 10

miles 3. Sprinting 100

meters4. Making beer5. 1, 2 and 36. All of these

If a person has one normal and one mutant copy of the BRCA1 gene, that

describes their ______. If the mutation in BRCA1 leads to breast cancer, that

describes their ____________.

1. alleles and genotype2. trait and phenotype3. genotype and phenotype4. trait and alleles

Which mutation has the most affect on the protein sequence?mRNA: AUG-UGU-AGU-GGC-AGAProtein: MET-CYS-SER-GLY-ARG

1. mRNA: AUG-UGU-AGU-GGA-AGA2. mRNA: AUG-UGU-AGU-GGC-GA3. mRNA: AUG-UGG-UAG-UGG-CAG-A4. mRNA: AUG-UGU-AGU-GGA-AGC

Which mutation is an example of an insertion?mRNA: AUG-UGU-AGU-GGC-AGAProtein: MET-CYS-SER-GLY-ARG

1. mRNA: AUG-UGU-AGU-GGA-AGA2. mRNA: AUG-UGU-AGU-GGC-GA3. mRNA: AUG-UGG-UAG-UGG-CAG-A4. mRNA: AUG-UGU-AGU-GGA-AGC

Mutations….

1. Have a negative effect on the gene product.

2. Have a neutral effect on the gene product.

3. Can cause beneficial changes in the gene product or its expression.

4. 1 and 35. All of the above

A mutation occurs in the ____ of a gene, but the disease is caused by

translation of a _________. 1. mRNA….. non-functional protein2. DNA….mRNA3. mRNA….protein with decreased function4. DNA….non-functional protein5. Answers 1 and 3 are correct