GENERAL BIOLOGY 151 PRACTICE
FINAL EXAM (VCU) QUESTIONS AND
ANSWERS
BioCillin is a (fictional) antibiotic that increases the permeability of bacterial cell walls to
inorganic ions. What is the most likely mode of action of BioCillin? - Correct Answers -It
forms a channel in the membrane.
The figure shows the reaction of Enzyme X: A + B → C + D ,Enzyme Y does the
reaction but in reverse: C + D → A + B Which of the following letters represents the
activation energy needed in the reaction catalyzed by Enzyme Y (Select the best
answer)
(double check) - Correct Answers -a
Enzyme X is involved in the first reaction in the Krebs Cycle. What do you need to
increase to reach the point of saturation of Enzyme X? (Select the best answer) -
Correct Answers -Oxaloacetate and Acetyl-CoA
During cellular respiration, acetyl CoA accumulates in which location? - Correct
Answers -Mitochondrial matrix
________ is a product of glycolysis, pyruvate processing, and the citric acid cycle. -
Correct Answers -NADH
During glycolysis, when each molecule of glucose is catabolized to two molecules of
pyruvate, most of the potential energy contained in glucose is ________. - Correct
Answers -retained in the two pyruvates
Starting with citrate, which of the following combinations of products would result from
three acetyl CoA molecules entering the citric acid cycle. - Correct Answers -3 ATP, 6
CO2, 9 NADH, and 3 FADH2
Based on your knowledge of the polarity of water molecules, the solute molecule
depicted here is most likely: (Select the best answer) - Correct Answers -Chloride Ion
The hypothetical element Valyrium has an atomic number of 15. It is possible to predict
that the Valyrium atom has... (Select the best answer) - Correct Answers -15 Protons,
15 electrons
, Which of the following functional groups is found in fatty acids? (Select the best answer)
- Correct Answers -Functional group A
What region of the steroid cholesterol is hydrophilic? (Select the best answer) - Correct
Answers -The terminal hydroxyl group
A student has drawn this model to study for their exam. Which element is not present in
the drawing? (Select the best answer) - Correct Answers -Cholesterol
A major feature of phospholipids that causes a portion of their structure to be hydrophilic
is (Select the best answer) - Correct Answers -the phosphate
A glycosidic linkage is analogous to which of the following in proteins? (Select the best
answer) - Correct Answers -Peptide bond
Which molecule shown below contains an amino functional group but is NOT an amino
acid?(Select the best answer) - Correct Answers -Molecule A
Which molecule shown below contains a fatty acid? (select the best answer) - Correct
Answers -Molecule C
At room temperature (20 C) a small non polar solute has on average a diffusion rate of
20units per second. You experimentally increase the temperature to 28 C, and make
the phospholipids tails unsaturated. Which of the following would likely be the diffusion
rate of the solute in this experiment?(Select the best answer) - Correct Answers -around
30 units per second
The molecular formula for glucose is C6-H12-O6. What would be the molecular formula
for a polymer made by linking 4 glucose molecules together by dehydration reactions?
(Select the best answer) - Correct Answers -C24-H42-O21
This glucose transport protein is an example of ... (Select the best answer) - Correct
Answers -an simporter
Based on the figure, which of these experimental treatments would increase the rate of
glucose transport into the cell? In this figure, glucose is being imported into the cell.
(Select the best answer) - Correct Answers -Increasing extracellular sodium
concentration
You have just discovered an organism that lives in extremely cold environments. Which
of the following would you predict to be TRUE about their plasma membranes,
compared to the membranes of organisms that live in warmer environments? (Select
the best answer) - Correct Answers -The membrane of cold-adapted organisms will
have more unsaturated hydrocarbon tails.
FINAL EXAM (VCU) QUESTIONS AND
ANSWERS
BioCillin is a (fictional) antibiotic that increases the permeability of bacterial cell walls to
inorganic ions. What is the most likely mode of action of BioCillin? - Correct Answers -It
forms a channel in the membrane.
The figure shows the reaction of Enzyme X: A + B → C + D ,Enzyme Y does the
reaction but in reverse: C + D → A + B Which of the following letters represents the
activation energy needed in the reaction catalyzed by Enzyme Y (Select the best
answer)
(double check) - Correct Answers -a
Enzyme X is involved in the first reaction in the Krebs Cycle. What do you need to
increase to reach the point of saturation of Enzyme X? (Select the best answer) -
Correct Answers -Oxaloacetate and Acetyl-CoA
During cellular respiration, acetyl CoA accumulates in which location? - Correct
Answers -Mitochondrial matrix
________ is a product of glycolysis, pyruvate processing, and the citric acid cycle. -
Correct Answers -NADH
During glycolysis, when each molecule of glucose is catabolized to two molecules of
pyruvate, most of the potential energy contained in glucose is ________. - Correct
Answers -retained in the two pyruvates
Starting with citrate, which of the following combinations of products would result from
three acetyl CoA molecules entering the citric acid cycle. - Correct Answers -3 ATP, 6
CO2, 9 NADH, and 3 FADH2
Based on your knowledge of the polarity of water molecules, the solute molecule
depicted here is most likely: (Select the best answer) - Correct Answers -Chloride Ion
The hypothetical element Valyrium has an atomic number of 15. It is possible to predict
that the Valyrium atom has... (Select the best answer) - Correct Answers -15 Protons,
15 electrons
, Which of the following functional groups is found in fatty acids? (Select the best answer)
- Correct Answers -Functional group A
What region of the steroid cholesterol is hydrophilic? (Select the best answer) - Correct
Answers -The terminal hydroxyl group
A student has drawn this model to study for their exam. Which element is not present in
the drawing? (Select the best answer) - Correct Answers -Cholesterol
A major feature of phospholipids that causes a portion of their structure to be hydrophilic
is (Select the best answer) - Correct Answers -the phosphate
A glycosidic linkage is analogous to which of the following in proteins? (Select the best
answer) - Correct Answers -Peptide bond
Which molecule shown below contains an amino functional group but is NOT an amino
acid?(Select the best answer) - Correct Answers -Molecule A
Which molecule shown below contains a fatty acid? (select the best answer) - Correct
Answers -Molecule C
At room temperature (20 C) a small non polar solute has on average a diffusion rate of
20units per second. You experimentally increase the temperature to 28 C, and make
the phospholipids tails unsaturated. Which of the following would likely be the diffusion
rate of the solute in this experiment?(Select the best answer) - Correct Answers -around
30 units per second
The molecular formula for glucose is C6-H12-O6. What would be the molecular formula
for a polymer made by linking 4 glucose molecules together by dehydration reactions?
(Select the best answer) - Correct Answers -C24-H42-O21
This glucose transport protein is an example of ... (Select the best answer) - Correct
Answers -an simporter
Based on the figure, which of these experimental treatments would increase the rate of
glucose transport into the cell? In this figure, glucose is being imported into the cell.
(Select the best answer) - Correct Answers -Increasing extracellular sodium
concentration
You have just discovered an organism that lives in extremely cold environments. Which
of the following would you predict to be TRUE about their plasma membranes,
compared to the membranes of organisms that live in warmer environments? (Select
the best answer) - Correct Answers -The membrane of cold-adapted organisms will
have more unsaturated hydrocarbon tails.
