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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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Which is a commercial use for lactic acid fermentation?

A
making starch
B
making bread
C
making wine
D
making cheese
3

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
4

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.
5

What do aerobic respiration and anaerobic respiration have in common?

A
Both begin with glycolysis.
B
Both occur in mitochondria.
C
Both require oxygen to proceed.
D
Both end with the electron transport chain.
6

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.
7

Which is required for both anaerobic respiration and aerobic respiration?

A
oxygen
B
water
C
mitochondria
D
glucose
8

What is the overall net gain of ATP in aerobic respiration per one molecule of glucose?

A
between 0-10
B
between 10-20
C
between 30-40
D
between 40-50
9

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.
10

Which statement about anaerobic respiration is true?

A
Anaerobic respiration prevents muscle fatigue.
B
Anaerobic respiration generates a high yield of ATP.
C
Anaerobic respiration is used commercially in the production of beer, wine, bread, yogurt, and cheese.
D
Anaerobic respiration can provide energy to animals for several days in the absence of oxygen.

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