CellBioPt22014-15

1.

1 point

All of the following are sources of energy for humans during exercise EXCEPT

stored ATP.

cellular respiration.

lactic acid fermentation.

alcoholic fermentation.

2.

1 point

Which of the following happens when a cell divides?

Each daughter cell receives its own copy of the parent cell’s DNA.

It becomes more difficult for the cell to get rid of wastes.

The cell’s volume increases.

It becomes more difficult for the cell to get enough oxygen and nutrients.

3.

1 point

The leaves of plants appear green because chlorophyll

reflects green light

absorbs blue light

absorbs green light

reflects blue light

4.

1 point

Which of these processes takes place in the cytoplasm of a cell?

glycolysis

Krebs cycle

electron transport

photosynthesis

5.

1 point

Cyclins are a family of closely related proteins that

cause cancer.

regulate the cell cycle.

produce p53.

work to heal wounds.

6.

1 point

What are the reactants in the equation for cellular respiration?

glucose and oxygen

oxygen and lactic acid

carbon dioxide and water

water and glucose

7.

1 point

During which phase in the cell cycle does mitosis happen?

S phase

M phase

G1 phase

G2 phase

8.

1 point

As a cell becomes larger, its

volume increases faster than its surface area.

surface area stays the same, but its volume increases.

surface area increases faster than its volume.

volume increases, but its surface area stays the same.

9.

1 point

Why are stem cells important?

They have specialized DNA.

They have the potential to develop into other cell types.

They have the potential to undergo cell division.

They are incapable of becoming cancer cells.

10.

1 point

The first step in photosynthesis is the

production of oxygen

synthesis of water

absorption of light energy

breakdown of carbon dioxide

11.

1 point

Photosynthesis is to chloroplasts as cellular respiration is to

cytoplasm.

chloroplasts.

mitochondria.

nuclei.

12.

1 point

Which of the following is the correct sequence of events in cellular respiration?

Krebs cycle --> electron transport --> glycolysis

Krebs cycle --> glycolysis --> electron transport

glycolysis --> Krebs cycle --> electron transport

glycolysis --> fermentation --> Krebs cycle

13.

1 point

The Krebs cycle does NOT occur if

oxygen is present.

glycolysis occurs.

oxygen is not present.

carbon dioxide is present.

14.

1 point

Why are electron carriers needed for transporting electrons from one part of the chloroplast to another?

High-energy electrons would be destroyed.

High-energy electrons are highly reactive.

High-energy electrons get their energy from electron carriers.

High-energy electrons are not soluble in cytoplasm.

15.

1 point

Cancer cells form masses of cells called

cyclins.

tumors.

p53.

growth factors.

16.

1 point

Which of the following correctly summarized the process of photosynthesis

Sugars + CO2 --> H2O + O2

H2O + CO2 --> sugars + O2

H2O + O2 --> sugars + CO2

Sugars + O2 --> H2O + CO2

17.

1 point

The process by which a cell divides into two daughter cells is called

interphase.

mitosis.

metaphase.

cell division.

18.

1 point

Cellular respiration uses 1 molecule of glucose to produce approximately

36 ATP molecules.

4 ATP molecules.

32 ATP molecules.

2 ATP molecules.

19.

1 point

The principal pigment in plants is

ATP

NADPH

chlorophyll

oxygen

20.

1 point

Autotrophs differ from Heterotrophs because they

make carbon dioxide as a product of using food

do not require oxygen to live

utilize oxygen to burn food

make their own food from carbon dioxide and water

21.

1 point

Breathing heavily after running a race is your body’s way of

stopping the electron transport chain.

restarting glycolysis.

making more citric acid.

repaying an oxygen debt.

22.

1 point

An advantage of sexual reproduction over asexual reproduction is that sexual reproduction

requires more time

provides genetic diversity

produces identical offspring

takes less time

23.

1 point

In addition to light and chlorophyll, photosynthesis requires

water and carbon dioxide

oxygen and carbon dioxide

water and sugar

water and oxygen

24.

1 point

Which of the following genes is/are associated with the development of cancer:
1. Tumor suppressor genes
2. Hox genes
3. Proto-oncogenes

Option 1 only

Options 1 and 3

Options 2 and 3

Options 1 and 2

25.

1 point

Cellular respiration is called an aerobic process because it requires

exercise.

oxygen.

light.

glucose.

26.

1 point

Which of the following is NOT a stage of cellular respiration?

glycolysis

fermentation

electron transport

Krebs cycle

27.

1 point

What are the three parts of an ATP molecule?

adenine, thylakoid, and a phosphate group

adenine, ribose, and three phosphate groups

stroma, grana, and chlorophyll

NADH, NADPH, and FADH2

28.

1 point

Where do the light-dependent reactions take place?

in the outer membrane of the chloroplasts

within the mitochondria membranes

within the thylakoid membranes

in the stroma of the chloroplast

29.

1 point

When during the cell cycle is a cell’s DNA replicated?

S phase

G2 phase

G1 phase

M phase

30.

1 point

During early development, all cells in the embryo of a multicellular organism are identical. Later on in development, the cells will become specialized through a process called

differentiation.

apoptosis.

cytokinesis.

interphase.

31.

1 point

Glycolysis provides a cell with a net gain of

2 ATP molecules.

4 ATP molecules.

36 ATP molecules.

18 ATP molecules.

32.

1 point

The two main types of fermentation are called

aerobic and anaerobic.

alcoholic and lactic acid.

alcoholic and aerobic.

lactic acid and anaerobic.

33.

1 point

Lactic acid fermentation occurs in

muscle cells.

bread dough.

mitochondria.

any environment containing oxygen.

34.

1 point

Which of the following is one of the ways that cellular respiration and photosynthesis are opposite processes?

Photosynthesis removes carbon dioxide from the atmosphere, and cellular respiration puts it back.

Photosynthesis releases energy, and cellular respiration stores energy.

Photosynthesis consumes glucose, and cellular respiration produces glucose.

Photosynthesis removes oxygen from the atmosphere, and cellular respiration puts it back.

35.

1 point

In eukaryotes, electron transport occurs in the

inner mitochondrial membrane.

cell membrane.

cytoplasm.

nucleus.

36.

1 point

Which of the following are autotrophs?

plants

deer

leopards

mushrooms