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Student Name: _______________________________ BIOL 203 Fall 2012
RED ID:____________________________________
EXAM II Version A
MULTIPLE CHOICE QUESTIONS (100 points total): For each of the following numbered questions, mark the most appropriate answer.
The following questions are worth 2 points each. Please mark the answer on the exam sheet and the Parscore test form. Please put
your name and RED ID on the exam sheet (above) and Parscore test form. Please mark the Version of Exam I on your Parscore test
form.
Match the following transport mechanisms in the figure to the right:
1) Active transport __C___
2) Diffusion __A___
3) Facilitated diffusion __B___
4) The following mechanisms of endocytosis are utilized by cells:
A) receptor-mediated endocytosis
B) phagocytosis
C) pinocytosis
D) all of the above
E) none of the above
5) Which of the following molecules would likely move directly through the lipid bilayer of a plasma membrane?
A) CO2
B) steroids
C) O2
D) some water molecules
E) all of the above
6) The presence of cholesterol in the plasma membranes of some animals
A) enables the animal to remove hydrogen atoms from saturated phospholipids
B) enables the animal to add hydrogen atoms to unsaturated phospholipids
C) makes the membrane less flexible, allowing it to sustain greater pressure from within the cell
D) makes the animal more susceptible to circulatory disorders
E) reduces membrane fluidity at moderate (37ยฐC) temperatures
Match the following conditions in the figure to the right:
7) Hypertonic solution __C___
8) Hypotonic solution __A___
9) The key enzyme which regulates glycolysis through allosteric binding of
ATP and its products is:
A) hexokinase
B) ATP synthase
C) rubisco
D) coenzyme A
E) none of the above
10) Energy in the form of ATP is initially invested during
A) glycolysis
B) oxidative phosphorylation
C) alcohol fermentation
D) lactic acid fermentation
E) citric acid cycle
11) Phosphorylation of glucose during the first step of glycolysis
A) traps the sugar molecule in the cell
B) makes glucose less chemically reactive
C) is carried out by the enzyme phosphofructokinase
D) all of the above
E) none of the above
H
2
OH
2
OH
2
OH
2
O
AB C
