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Cellular Respiration Answers

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During glycolysis, glucose is broken down into two molecules of pyruvate. What is the main transformation that occurs during glycolysis?

Question illustration
A
Glycolysis produces ATP and pyruvate by oxidizing water.
B
Glycolysis produces ATP and pyruvate by oxidizing glucose and NAD+.
C
Glycolysis produces pyruvate, ATP, and NADH by oxidizing glucose.
D
Glycolysis produces CO2, ATP, and pyruvate by reducing glucose.
2
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The equation shows cellular respiration. During cellular respiration, glucose combines with oxygen to form carbon dioxide, water, and ATP. What happens to the energy in the bonds in glucose?

Question illustration
A
The energy is transferred to oxygen.
B
The energy is transferred to carbon dioxide.
C
The energy is transferred to water.
D
The energy is transferred to ATP.
3

The graphic shows the citric acid cycle. During the citric acid cycle, what happens to acetyl-CoA?

Question illustration
A
It enters the citric acid cycle and gains carbon dioxide to form citric acid, and gains more carbon dioxide through redox reactions to form a 4-carbon molecule.
B
It enters the citric acid cycle and associates with a 4-carbon molecule, forming citric acid, and then through redox reactions regenerates the 4-carbon molecule.
C
It enters glycolysis and associates with a 5-carbon molecule through redox reactions, forming another acetyl-CoA molecule.
D
It enters the citric acid cycle and associates with a 4-carbon molecule, forming a 5-carbon compound, and then through oxidation reactions regenerates the 4-carbon molecule.
4

Which process occurs within the mitochondria?

A
lactic acid fermentation
B
alcohol fermentation
C
glycolysis
D
Krebs cycle
5

The Venn diagram compares aerobic respiration and anaerobic respiration.Which statement should be categorized only in the aerobic section of the Venn diagram?

Question illustration
A
occurs in the cytoplasm
B
produces water
C
requires no oxygen
D
is performed by yeast
6

The Venn diagram compares aerobic respiration and anaerobic respiration.Which statement could be categorized only in the anaerobic section of the Venn diagram?

Question illustration
A
is performed by eukaryotes
B
has commercial uses
C
regenerates NADH
D
occurs in the mitochondria
7

What is the main difference between aerobic respiration and anaerobic respiration?

A
Aerobic respiration requires oxygen to proceed, but anaerobic respiration does not.
B
Aerobic respiration occurs during photosynthesis, but anaerobic respiration occurs during cellular respiration.
C
Aerobic respiration produces ATP, but anaerobic respiration does not.
D
Aerobic respiration involves glycolysis, but anaerobic respiration does not.
8

Consider the stage of cellular respiration that is shown in the diagram.What is the net ATP gain at this stage of cellular respiration?

Question illustration
A
2
B
4
C
32
D
36
9

Which statement about cellular respiration is true?

A
It produces oxygen.
B
It requires water.
C
It is used by every living cell.
D
It converts energy to food.
10

What role does cellular respiration play in the water cycle?

A
It removes H2O from the atmosphere during glycolysis.
B
It removes H2O from the atmosphere during acetyl CoA formation.
C
It releases H2O to the atmosphere during the citric acid cycle.
D
It releases H2O to the atmosphere during electron transport.

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