Biology 211
Practice Exam II
(100 pts.)
Multiple choice (3 pts. Each). Select the one best answer and fill in the appropriate space
on the SCANTRON provided.
1.
a.
b.
c.
d.
Glycolysis takes place in the ______________.
nucleus
mitochondrion
plasma membrane
cytoplasm
2. Which of the following is not a plant pigment involved in photosynthesis
a. cytochrome c
b. chlorophyll a
c. chlorophyll b
d. carotenoids
3.
a.
b.
c.
d.
Which of the following is not a product of glycolysis?
NADH
pyruvate
ATP
FADH2
4.
a.
b.
c.
d.
In plants, light dependent reactions of photosynthesis take place in the
cytoplasm
plasma membrane
stroma
thylakoid membrane
5.
a.
b.
c.
d.
Immerse a living cell in a hypotonic solution, and water will tend to
move into the cell
move out of the cell
show no net movement
move in by endocytosis
6.
a.
b.
c.
d.
In the light-dependent reactions of photosynthesis,
carbon dioxide is fixed
ATP and NADPH form
CO2 accepts electrons
sugar phosphates form
7. Sodium ions cross a membrane through transport proteins that receive an energy
boost. This is an example of
a. passive transport
b. active transport
c. facilitated diffusion
d. osmosis
8.
a.
b.
c.
d.
The oxygen produced in photosynthesis comes from
the splitting of water in the presence of light
carbon dioxide in the dark reactions
the breakdown of glucose
electron transport chain
9.
a.
b.
c.
d.
In aerobic respiration, the correct order of metabolic pathways is
glycolysis, electron transport, Kreb's cycle, oxidative phosphorylation
electron transport, oxidative phosphorylation, glycolysis, Kreb's cycle
glycolysis, Kreb's cycle, electron transport chain, oxidative phosphorylation
Kreb's cycle, electron transport chain, glycolysis, oxidative phosphorylation
10. The location in the cell where secretory proteins are synthesized and initially
processed is
a. nucleus
b. Golgi body
c. mitochondrion
d. rough endoplasmic reticulum
e. lysosome
11. In mechanism, photophosphorylation is most similar to
a. substrate-level phosphorylation in glycolysis
b. oxidative phosphorylation in cellular respiration
c. the Calvin cycle
d. carbon fixation
e. reduction of NADP+
12. Which of the following factors would tend to increase membrane fluidity?
a. a greater proportion of unsaturated phospholipids?
b. a lower temperature
c. a relatively high protein content in the membrane
d. a greater proportion of large glycolipids compared to smaller molecular weight lipids
13. Which of the following structure-function pairs is mismatched?
a. nucleolus; ribosome production
b. lysosomes; intracellular digestion
c. ribosome; protein synthesis
d. Golgi; ATP synthesis
14. Which of these did Miller and Urey place in their experimental system to show that
organic molecules could have arisen from inorganic molecules on the primitive earth?
a. microspheres
b. purines and pyrimidines
c. primitive gases
d. only RNA
15. Chemiosmosis
a. depends on protein complexes in the thylakoid membrane
b. depends on an electrochemical gradient
c. depends on a difference in H+ concentration between the thylakoid space and the
stroma
d. results in ATP formation
e. all of the above are correct
16. In the Krebs cycle,
a. ATP, NADH, FADH2, CO2, and water form
b. glucose is broken down to give 2 pyruvate
c. NAD+ is regenerated from NADH + H+
d. protons flwo through ATP synthase
17. (22 pts.) a. Outline the major metabolic pathways that would be traveled by a
molecule of glucose (C6H12O6) as it is broken down by a eukaryotic cell into CO2 and
H2O in the presence of oxygen. For full credit, identify key intermediates and products
formed in the pathways; however, you need not give chemical structures.
17. b. In which of the pathways is most of the carbon dioxide produced?
c. Which pathway uses up oxygen and produces water?
d. Which process produces the greatest proportion of ATP?
18. Define or describe any five of the following seven terms:
a. osmosis
b. exocytosis
c. Golgi body
d. lysosome
e. nuclear envelope
f. integral membrane protein
g. thylakoid membrane
19. (10 pts.) Describe the fluid-mosaic model of membrane structure.