Name _______________________
Quiz A on Cellular Respiration & Fermentation
Biology 4442
Multiple Choice: Carefully make the letter of the best answer on the scantron sheet.
1. The overall purpose of cellular respiration is
a) to make glucose and store energy
b) to break down glucose and release energy
c) to make pyruvate
d) to keep breathing
2. The correctly balanced chemical formula for cellular respiration is
a) 6CO2 + 6H2O  C6H12O6 + 6O2
b) 6C6H12O6 + 6O2  6CO2 + 6H2O
c) C6H12O6 + 6O2  6CO2 + 6H2O
d) C6H12O6 + 6CO2  6O2 + 6H2O
3. The term anaerobic means
a) a process that does not require oxygen
b) a process that does require oxygen
c) a process that occurs outside a cell
d) a process that occurs inside a cell
e) a process that releases energy
4. All of the following apply to glycolysis except…
a) it occurs in the cytoplasm of the cell
b) pyruvate molecules are produced
c) a net of two ATP are formed
d) a glucose molecule is broken down into two 3-carbon molecules
e) 36 ATP are produced
5. Acetyl CoA is…
a) the end product of cellular respiration
b) the end product of glycolysis
c) an intermediate molecule formed just before the Krebs cycle
d) the final electron acceptor at the end of the electron transport chain
6. Which of the following puts the steps of the Krebs cycle in the correct order?
a) glucose combines with acetyl CoA, this compound loses carbon dioxide to form a 6-carbon
compound, this compound is broken down in a series of steps to form a 4-carbon
compound, NADH & FADH2 & carbon dioxide are produced in the process.
b) acetyl CoA combines with a 4-carbon molecule to form a 6-carbon molecule called citric
acid, citric acid is broken down in a series of steps that generate NADH, FADH2, carbon
dioxide and one ATP
c) oxaloacetate combines with carbon dioxide to form a 6-carbon molecule, this molecule
then releases carbon dioxide to form a 5-carbon molecule, the loss of carbon continues
until a 3-carbon molecule is formed, the whole process produces NADH, FADH2 & ATP
d) tricarboxylic acid combines with acetyl CoA form citric acid, this molecule then loses
carbon dioxide to form a 5-carbon molecule, the molecule is broken down in a series of
steps that generate NADH, FADH2 & one ATP
7. Each glucose molecule requires __ ‘turns’ of the Krebs cycle.
a) 1
b) 2
c) 4
d) 6
8. The Krebs cycle takes place in the
a) mitochondrial matrix
b) cytoplasm
c) inner membrane of the mitochondria
d) intermembrane space
9. The purpose of the Krebs cycle is to
a) produce a lot of ATP
b) produce a number of electron carrier molecules
c) break down glucose into pyruvate
d) combine acetyl CoA with citric acid
10. The electron transport chain is located in the
a) mitochondrial matrix
b) cytoplasm
c) inner membrane of the mitochondria
d) intermembrane space
11. The purpose of the electron transport chain is to
a) produce a lot of ATP
b) produce a number of electron carrier molecules
c) break down glucose into pyruvate
d) combine acetyl CoA with citric acid
12. All of the following apply to the electron transport chain except…
a) NADH & FADH2 carry electrons to the transport chain
b) H+ ions are pumped into the intermembrane space
c) chemiosmosis occurs to produce ATP
d) a number of electron carrier molecules are produced
13. Most of the energy from cellular respiration is released in the electron transport chain.
a) true
b) false
14. All of the following apply to fermentation except…
a) fermentation occurs when there is no oxygen
b) glycolysis is the main process in fermentation
c) fermentation produces almost as much energy as cellular respiration
d) fermentation takes place in the cytoplasm of the cell
e) NAD+ must be regenerated in order for fermentation to continue
15. All of the following apply to lactic acid fermentation except…
a) lactic acid fermentation starts with pyruvate molecules
b) a 3-carbon molecule is converted to lactic acid which is also a 3-carbon molecule
c) carbon dioxide is released
d) only 2 ATP are produced
e) NADH loses its high energy electrons and produces NAD+
16. All of the following would apply to alcohol fermentation except…
a) alcohol fermentation starts with pyruvate molecules
b) carbon dioxide is released
c) ethyl alcohol is formed which is a 2-carbon molecule
d) NADH loses its high energy electrons and produces NAD+
e) 6 ATP are produced
17. Plants carry out both photosynthesis and cellular respiration.
a) true
b) false
18. Looking at the diagram below, where would Acetyl CoA be?
a) A
b) B
c) C
d) D
A
D
B
C
19. The diagram above is of
a) glycolysis
b) the Krebs cycle
c) the electron transport chain
d) cellular respiration as a whole
20. Looking at the diagram above, the NADH & FADH2 will go to
a) glycolysis
b) the Krebs cycle
c) the electron transport chain
d) the Calvin cycle
21. The diagram below is of
a) glycolysis
b) the Krebs cycle
c) the electron transport chain
d) the Calvin cycle
e) cellular respiration as a whole
NADH
ATP
ADP
ADP
NAD+
C3H4O3
G3P
ATP
pyruvate
C6H12O6
C3H4O3
pyruvate
G3P
ATP
ADP
ADP
NAD+
ATP
22. The C3H4O3 molecules in this diagram will go to
a) glycolysis
b) Krebs cycle
c) electron transport chain
d) Calvin cycle
NADH