Question 1

Glycolysis yields a net energy profit of __________ ATP molecules per molecule of glucose.

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  4 
E)  6

Question 2

In aerobic respiration, glucose is completely:

Accepted Answer

A)  reduced to ATP. 
B)  reduced to energy. 
C)  oxidized to water. 
D)  oxidized to carbon dioxide. 
E)  oxidized and reduced simultaneously.

Question 3

MATCHING
Match the stage of cellular respiration with the correct process.
a.citric acid cycle
c.electron transport and chemiosmosis
b.glycolysis
d.formation of acetyl CoA
-Oxaloacetate reacts with an acetyl group.

Accepted Answer

The answer of MATCHING
Match the stage of cellular respiration with...

Question 4

Organismal body heat is a:

Accepted Answer

A)  byproduct of endergonic reactions. 
B)  product of glucose synthesis. 
C)  byproduct of exergonic reactions. 
D)  product of anabolism. 
E)  product of ATP synthesis.

Question 5

The reactions of the citric acid cycle take place in the matrix of the mitochondrion.
__________________

Accepted Answer

A) True 
 B)False

Question 6

MATCHING
Match the stage of cellular respiration with the correct process.
a.citric acid cycle
c.electron transport and chemiosmosis
b.glycolysis
d.formation of acetyl CoA
-Oxygen is the final electron acceptor.

Accepted Answer

The answer of MATCHING
Match the stage of cellular respiration with...

Question 7

Considering only glycolysis and the conversion of pyruvate molecules to acetyl CoA molecules, how many NADH molecules will be produced from one glucose molecule?

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  five

Question 8

In aerobic respiration, the electrons associated with the hydrogen atoms in glucose are ultimately transferred to:

Accepted Answer

A)  carbon in a series of steps. 
B)  oxygen in a series of steps. 
C)  NADH in a series of steps. 
D)  the mitochondrial membranes. 
E)  hydrogen ions.

Question 9

One important regulation point in the aerobic respiration of mammals occurs in glycolysis at the site of the enzyme phosphofructokinase, which is:

Accepted Answer

A)  inhibited by high levels of ATP. 
B)  inhibited by low levels of ATP. 
C)  inhibited by high levels of AMP. 
D)  activated by the presence of O2. 
E)  activated by the introduction of glucose.

Question 10

In liver cells, each NADH produced via glycolysis results in two ATP molecules in the electron transport chain.
__________________

Accepted Answer

A) True 
 B)False

Question 11

A drowning death would be most directly due to:

Accepted Answer

A)  The unavailability of glucose to feed into glycolysis. 
B)  The accumulation of lactate in the muscle tissue due to anaerobic respiration. 
C)  The breakdown of pyruvate into ethyl alcohol. 
D)  The lack of oxygen to accept hydrogen. 
E)  There is not sufficient information to determine which answer is correct.

Question 12

During fermentation, the immediate fate of the electrons in NADH is that they:

Accepted Answer

A)  are transferred to the electron transport chain. 
B)  are transferred to an organic molecule. 
C)  are transferred to O2. 
D)  are used to make CO2. 
E)  are used to form H2O.

Question 13

During the citric acid cycle, each acetyl group entering the cycle yields:

Accepted Answer

A)  1 ATP, 2 NADH, and 3 FADH2. 
B)  1 ATP, 3 NADH, and 1 FADH2. 
C)  3 ATP, 2 NADH, and 1 FADH2. 
D)  4 ATP, 2 NADH, and 1 FADH2. 
E)  1 ATP, 2 NADH, and 4 FADH2.

Question 14

MATCHING
Match the stage of cellular respiration with the correct process.
a.citric acid cycle
c.electron transport and chemiosmosis
b.glycolysis
d.formation of acetyl CoA
-NADH is oxidized.

Accepted Answer

The answer of MATCHING
Match the stage of cellular respiration with...

Question 15

Select the molecule that contains the most stored chemical energy:

Accepted Answer

A)  ethyl alcohol. 
B)  water. 
C)  carbon dioxide. 
D)  lactate. 
E)  oxygen.

Question 16

Which of the following molecules can be used as a substrate for cellular respiration?

Accepted Answer

A)  glucose only 
B)  glucose and lipids only 
C)  glucose and proteins only 
D)  glucose, lipids and proteins only 
E)  glucose, lipids, proteins and fatty acids

Question 17

The ability of some bacteria to produce lactate is exploited by humans to make:

Accepted Answer

A)  cheese and ethyl alcohol. 
B)  insulin and antibodies. 
C)  yogurt and sauerkraut. 
D)  ethyl alcohol and carbonic acid. 
E)  carbon dioxide and water.

Question 18

The overall reaction for the aerobic respiration of glucose is summarized as:

Accepted Answer

A)  C6H12O6 + 6 O2 + 6 H2O $\rightarrow$ 6 CO2 + 12 H2O + Energy. 
B)  C4H12O4 + 12 H2O + 6 CO2 $\rightarrow$6 O2 + ATP + Energy. 
C)  C4H12O4 + 6 O2 + 6 H2O $\rightarrow$ 6 CO2 + ATP + Energy. 
D)  C4H12O2 + 6 O2 + ATP $\rightarrow$ 6 CO2 + 12 H2O + Energy. 
E)  C6H12O6 + 6 H2O $\rightarrow$6 CO2 + 12 H2 + Energy.

Question 19

Even though our muscle cells contain mitochondria and normally undergo aerobic respiration, during strenuous activity lactate is formed, which contributes to cramps in our muscles.What is the evolutionary advantage of lactate production in our cells?

Accepted Answer

The answer of Even though our muscle cells contain mitochondria...

Question 20

In the citric acid cycle, two acetyl CoA molecules are metabolized to:

Accepted Answer

A)  2 CO2 + 2 ATPs + 2 NADH + 2 FADH. 
B)  4 CO2 + 6 NADH + 2 FADH2 + 2 ATP. 
C)  fructose-1, 6-bisphosphate. 
D)  glucose + 2 CO2 + 2 NADH + 2 FADH2 + 2 ATPs. 
E)  2 G3P.

Exam 8: How Cells Make Atp: Energy-Releasing Pathways

Glycolysis yields a net energy profit of __________ ATP molecules per molecule of glucose.

In aerobic respiration, glucose is completely:

MATCHING Match the stage of cellular respiration with the correct process. a.citric acid cycle c.electron transport and chemiosmosis b.glycolysis d.formation of acetyl CoA -Oxaloacetate reacts with an acetyl group.

Organismal body heat is a:

The reactions of the citric acid cycle take place in the matrix of the mitochondrion. __________________

MATCHING Match the stage of cellular respiration with the correct process. a.citric acid cycle c.electron transport and chemiosmosis b.glycolysis d.formation of acetyl CoA -Oxygen is the final electron acceptor.

Considering only glycolysis and the conversion of pyruvate molecules to acetyl CoA molecules, how many NADH molecules will be produced from one glucose molecule?

In aerobic respiration, the electrons associated with the hydrogen atoms in glucose are ultimately transferred to:

One important regulation point in the aerobic respiration of mammals occurs in glycolysis at the site of the enzyme phosphofructokinase, which is:

In liver cells, each NADH produced via glycolysis results in two ATP molecules in the electron transport chain. __________________

A drowning death would be most directly due to:

During fermentation, the immediate fate of the electrons in NADH is that they:

During the citric acid cycle, each acetyl group entering the cycle yields:

MATCHING Match the stage of cellular respiration with the correct process. a.citric acid cycle c.electron transport and chemiosmosis b.glycolysis d.formation of acetyl CoA -NADH is oxidized.

Select the molecule that contains the most stored chemical energy:

Which of the following molecules can be used as a substrate for cellular respiration?

The ability of some bacteria to produce lactate is exploited by humans to make:

The overall reaction for the aerobic respiration of glucose is summarized as:

Even though our muscle cells contain mitochondria and normally undergo aerobic respiration, during strenuous activity lactate is formed, which contributes to cramps in our muscles.What is the evolutionary advantage of lactate production in our cells?

In the citric acid cycle, two acetyl CoA molecules are metabolized to: