Question 1

The two turns of the Krebs Cycle are derived from:

Accepted Answer

A)   2 lactate molecules
B)   hydrogen Ion Production
C)   accelerated glycolysis
D)   2 PyruvatesE) None of the above
F) B) and D)

Question 2

During high-intensity exercise an increase in ADP concentration in the muscle cell stimulates the rate-limiting enzyme __________________.

Accepted Answer

The answer of During high-intensity exercise an increase in ADP...

Question 3

When pyruvate enters the mitochondria, it becomes which of the following:

Accepted Answer

A)   Oxaloacetate
B)   Pyruvate carboxylase
C)   Malate
D)   Acetyl CoAE) A) and B)
F) A) and C)

Question 4

Rate limiting enzymes in bioenergetic pathways play an integral role in controlling the rate of energy yielding pathways.

Accepted Answer

A) True 
 B)False

Question 5

What are the primary characteristics of the glycolytic system?

Accepted Answer

There are eighteen chemical reactions, s...

Question 6

The __________________________ is considered an energy barrier that must be overcome for a chemical reaction to occur.

Accepted Answer

energy of ...

Question 7

For every two turns of the Kreb's Cycle, how many ATP molecules are generated from FADH?

Accepted Answer

A)   5 ATP
B)   5.5 ATP
C)   4 ATP
D)   3.5 ATPE) C) and D)
F) A) and B)

Question 8

Doubling the speed of an enzymatic reaction by increasing the temperature by 10 degrees C is referred to as the ___________________.

Accepted Answer

Q10 effect

Question 9

How many ATP molecules are generated from 1 molecule of glucose in glycolysis?

Accepted Answer

A)   4 ATP
B)   2.5 ATP
C)   2 ATP
D)   3 ATPE) All of the above
F) B) and C)

Question 10

NAD must be reduced to NADH in the pyruvate to lactate biochemical step in order to keep anaerobic glycolysis running.

Accepted Answer

A) True 
 B)False  False

Question 11

During high-intensity exercise (e.g., 800 meter run)  which enzyme or enzymes are responsible for regulating the anaerobic glycolytic pathway?

Accepted Answer

A)   Cytochrome oxidase
B)   LDH
C)   PFK
D)   PFK and PFK-1E) B) and D)
F) None of the above

Question 12

During high-intensity exercise, lactate production is greater than lactate removal and contributes to the observed lactate threshold (LT) observed on graph paper.

Accepted Answer

A) True 
 B)False

Question 13

During high-intensity exercise, the ___________________decreases in the muscle cell thus contributing to the onset of muscular fatigue.

Accepted Answer

The answer of During high-intensity exercise, the ___________________decreases in the...

Question 14

When ATP is broken down within the muscle cells and energy is released from the chemical bonds, this process is illustrative of a/an:

Accepted Answer

A)   endergonic reaction
B)   enthalapy
C)   Gibbs free energy
D)   exergonic reactionE) None of the above
F) A) and B)

Question 15

What energy system would primarily be used when performing a pole vault?

Accepted Answer

A)   phosphocreatine system
B)   glycolytic system
C)   aerobic system
D)   all energy systems are contributing equallyE) A) and B)
F) A) and C)

Question 16

What energy systems are being used predominately during a 6.2 mile race (10K)?

Accepted Answer

Throughout the race oxidative phosphoryl...

Question 17

For every 2 turns of the Krebs Cycle (or Citric Acid Cycle)  the following number of ATP molecules is generated from NADH:

Accepted Answer

A)   22 ATP
B)   12 ATP
C)   19 ATP
D)   9 ATP
E)   24 ATPF) None of the above
G) A) and B) E

Question 18

Which of the following factors does NOT influence enzyme activity?

Accepted Answer

A)   temperature
B)   pH
C)   increased H+
D)   specificityE) A) and B)
F) A) and C)

Question 19

Which biochemical reaction provides energy for 5-10 seconds of sustained muscular contraction?

Accepted Answer

A)   ATP + H2O →\rightarrow→ ADP + Pi + Energy
B)   AMP + PCr +H+ →\rightarrow→  ATP + Cr
C)   PCr + ADP +H+  →\rightarrow→  ATP + Cr
D)   ATP + Pi →\rightarrow→ ADP + Cr E) C) and D)
F) A) and D)

Question 20

All of the following are characteristics of the Creatine Phosphate Bioenergetic System except:

Accepted Answer

A)   1 PCr = 3 ATP
B)   short-term (5-10 seconds) 
C)   high-energy phosphates
D)   1 PCr = 1 ATP
E)   buffers H+F) A) and B)
G) A) and C)

Exam 1: Bioenergetics

The two turns of the Krebs Cycle are derived from:

Correct AnswerverifiedShow Answer

During high-intensity exercise an increase in ADP concentration in the muscle cell stimulates the rate-limiting enzyme __________________.

Correct AnswerverifiedShow Answer

When pyruvate enters the mitochondria, it becomes which of the following:

Correct AnswerverifiedShow Answer

Rate limiting enzymes in bioenergetic pathways play an integral role in controlling the rate of energy yielding pathways.

Correct AnswerverifiedShow Answer

What are the primary characteristics of the glycolytic system?

Correct AnswerverifiedThere are eighteen chemical reactions, s...View AnswerShow Answer

The __________________________ is considered an energy barrier that must be overcome for a chemical reaction to occur.

Correct Answerverifiedenergy of ...View AnswerShow Answer

For every two turns of the Kreb's Cycle, how many ATP molecules are generated from FADH?

Correct AnswerverifiedShow Answer

Doubling the speed of an enzymatic reaction by increasing the temperature by 10 degrees C is referred to as the ___________________.

Correct AnswerverifiedQ10 effect

How many ATP molecules are generated from 1 molecule of glucose in glycolysis?

Correct AnswerverifiedShow Answer

NAD must be reduced to NADH in the pyruvate to lactate biochemical step in order to keep anaerobic glycolysis running.

Correct AnswerverifiedFalse

During high-intensity exercise (e.g., 800 meter run) which enzyme or enzymes are responsible for regulating the anaerobic glycolytic pathway?

Correct AnswerverifiedShow Answer

During high-intensity exercise, lactate production is greater than lactate removal and contributes to the observed lactate threshold (LT) observed on graph paper.

Correct AnswerverifiedShow Answer

During high-intensity exercise, the ___________________decreases in the muscle cell thus contributing to the onset of muscular fatigue.

Correct AnswerverifiedShow Answer

When ATP is broken down within the muscle cells and energy is released from the chemical bonds, this process is illustrative of a/an:

Correct AnswerverifiedShow Answer

What energy system would primarily be used when performing a pole vault?

Correct AnswerAnswered by ExamLex AIShow Answer

What energy systems are being used predominately during a 6.2 mile race (10K)?

Correct AnswerverifiedThroughout the race oxidative phosphoryl...View AnswerShow Answer

For every 2 turns of the Krebs Cycle (or Citric Acid Cycle) the following number of ATP molecules is generated from NADH:

Correct AnswerverifiedE

Which of the following factors does NOT influence enzyme activity?

Correct AnswerverifiedShow Answer

Which biochemical reaction provides energy for 5-10 seconds of sustained muscular contraction?

Correct AnswerverifiedShow Answer

All of the following are characteristics of the Creatine Phosphate Bioenergetic System except:

Correct AnswerverifiedShow Answer

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There are eighteen chemical reactions, s...
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energy of ...
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Q10 effect

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False

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Answered by ExamLex AI

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Throughout the race oxidative phosphoryl...
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E

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