Transcript two friend

1. Which of the following statements regarding
photosynthesis and cellular respiration is TRUe?
a. Photosynthesis occurs in chloroplasts and cellular
respiration occurs in mitochondria
b. Photosynthesis occurs in mitochondria and cellular
respiration occurs in chloroplasts
c. Photosynthesis occurs in mitochondria and chloroplasts
d. Cellular respiration occurs in mitochondria and in
chloroplasts
Correct answer:
A
2. Which of the following are products of cellular
respiration?
a. Oxygen and carbon dioxide
b. Energy to make ATP and carbon dioxide
c. Oxygen and glucose
d. Oxygen and energy to make ATP
Correct answer:
B
3. A kilocalorie is defined as
a. The quantity of glucose needed to increase the body
temperature by 10C
b. The quantity of heat needed to raise the temperature
of 1 kg of water by 10C
c. The quantity of food used to maintain normal bodily
functions
d. The quantity of food consumed during a given type of
exercise
Correct answer:
B
4. During cellular respiration, NADH
a. Is chemically converted into ATP
b. Is reduced to form NAD+
c. Delivers its electron load to the first electron carrier
molecule
d. Is the final electron acceptor
Correct answer:
C
5. Which of the following options lists the stages in cellular
respiration in the correct order?
a. Glycolysis, citric acid cycle, and oxidative
phosphorylation
b. Glycolysis, oxidative phosphorylation and citric acid
cycle
c. The citric acid cycle, oxidative phosphorylation, and
glycolysis
d. Oxidative phosphorylation, glycolysis, and the citric acid
cycle
Correct answer:
A
6. Which of the following metabolic pathways is common in
aerobic and anaerobic metabolism?
a. The citric acid cycle
b. Oxidative phosphorylation
c. Glycolysis
d. Electron transport chain
Correct answer:
C
7. As a result of glycolysis, there is a net gain of _____ ATP.
a. Zero
b. One
c. Two
d. Thirty six
Correct answer:
C
8. How many molecules of NADH are produced during
glycolysis?
a.
b.
c.
d.
Two
Four
Six
Eight
Correct answer:
A
9. Which of the following is a result of glycolysis?
a.
b.
c.
d.
Production of CO2
Conversion of glucose to two three carbon compounds
A net loss of two ATPs per glucose molecule
Conversion of NADH to NAD
Correct answer:
B
10. After glycolysis but before the citric acid cycle,
a. Pyruvate is oxidized
b. A carbon atom is added to pyruvate to make a fourcarbon compound
c. Coenzyme A is cleaved off pyruvate
d. Glucose is split producing two molecules of pyruvate
Correct answer:
A
11. Oxidation is the _________, and reduction is the
___________
a. Gain of electrons; loss of electrons
b. Loss of electrons; gain of electrons
c. Gain of oxygen; loss of oxygen
d. Gain of protons; loss of protons
Correct answer:
B
12. The end products of the citric acid cycle include all of
the following EXCEPT
a.
b.
c.
d.
CO2
Pyruvate
ATP
FADH2
Correct Answer: B
13. During chemiosmosis,
a. Energy is released as H+ ions move freely across
mitochondrial membrane
b. ATP is synthesized when H+ ions move through a
channel in ATP synthase
c. A concentration gradient is generated when large
numbers of H+ ions are passively transported from the
matrix of the mitochondrion to the mitochondrion’s
intermembrane space
d. H+ ions serve as the final electron acceptor
Correct Answer: B
14. In the electron transport chain, the final electron
acceptor is
a.
b.
c.
d.
An oxygen atom
A molecule of carbon dioxide
A molecule of water
ADP
Correct answer:
A
15. Rotenone is a poison commonly added to insecticides. It
binds tightly with one of the electron molecules in the ETC.
preventing electrons from passing to the next carrier
molecule. Insects exposed to rotenone will die because
a. They will no longer be able to perform anaerobic
respiration.
b. High levels of fermentation products will build up in
their bodies
c. They will no longer be able to produce adequate
amounts of ATP
d. They will no longer be able to absorb water and will
become dehydrated
Correct answer:
C
16. As electrons move through the mitochondrial space,
a.
b.
c.
d.
NADH is reduced
Water is oxidized
ATP synthase works by active transport
The pH of the intermembrane space decreases
Correct answer:
D
17. Which of the following processes produces the most
ATP per molecule of glucose oxidized?
a.
b.
c.
d.
Aerobic respiration
Alcoholic fermentation
Lactic acid fermentation
All produce approximately the same amount of ATP per
molecule of glucose
Correct answer:
A
18. In fermentation, _______________ is ______________
a.
b.
c.
d.
NADH; reduced
NAD+ ; oxidized
NADH ; oxidized
Ethanol; oxidized
Correct answer:
C
19. In yeast cells,
a.
b.
c.
d.
Lactic acid is produced during anaerobic respiration
Lactic acid is produced during glycolysis
Alcohol is produced during the citric acid cycle
Alcohol is produced after glycolysis
Correct answer:
D
20. Bacteria that are unable to survive in the presence of
oxygen are called
a.
b.
c.
d.
Obligate anaerobes
Obligate aerobes
Facultative anaerobes
Aerotolerant anaerobes
Correct answer:
A
21. Which of the following statements regarding glycolysis
is FALSE?
a. Glycolysis is considered to be an ancient metabolic
process because it does not require oxygen
b. Glycolysis is considered to be an ancient metabolic
system because it is not located in a membrane bound
organelle
c. Glycolysis is considered to be an ancient metabolic
system because it occurs universally
d. Glycolysis is considered to be an ancient metabolic
system because it is the most efficient metabolic
pathway for ATP synthesis
Correct answer:
D
22. When a cell uses fatty acids for aerobic respiration, it
first hydrolyzes fats to
a.
b.
c.
d.
Glycerol and amino acids
Glycerol and fatty acids
Fatty acids and sugars
Sugars and glycerol
Correct answer:
B
23. A friend tells you that he is going on a low-carb diet to
lose weight because he thinks that carbs contain more
energy than fats or protein. What would you tell your friend
about his plan?
a. This is a good idea because sugars have more electrons
than fats and protein
b. This is a good idea because sugars enter the fuel
breakdown pathway earlier than other food molecules
c. This is an incorrect idea because fats contain more
hydrogen atoms than carbohydrates and protein
d. This is an incorrect idea because all food molecules
store the same amount of energy
Correct answer:
C
24. Studies have shown that the muscles of marathon
runners contain an abundance of slow-twitch fibers. Which
of the following statements about these fibers is TRUE?
a. Slow-twitch fibers have lots of mitochondria to make
ATP aerobically.
b. Slow-twitch fibers have lots of mitochondria to make
ATP through fermentation
c. Slow-twitch fibers have few mitochondria and make ATP
aerobically.
d. Slow-twitch fibers have few mitochondria and make ATP
through fermentation.
Correct answer:
A
25. Arsenic is a poison that binds to a molecule needed to
build acetyl Co A. Based on this information, which part of
cellular respiration would be stopped if arsenic were
ingested?
a.
b.
c.
d.
Glycolysis
Citric acid cycle
Electron transport chain
ATP synthase
Correct answer:
B