Question 1

The purpose of the pentose phosphate pathway is to

Accepted Answer

A)  generate ATP. 
B)  generate NADPH. 
C)  metabolize 5-carbon sugars. 
D)  A and B. 
E)  B and C.

Question 2

The enzymes that catalyze the dark reactions of photosynthesis are located in the ___________ of the chloroplasts.

Accepted Answer

The answer of The enzymes that catalyze the dark reactions...

Question 3

In photosynthesis,light energy is transformed into ATP and biosynthetic reducing power in the form of _____.

Accepted Answer

A)  NADPH 
B)  NADH 
C)  FADH2 
D)  ADP 
E)  None of the answers is correct.

Question 4

How many ATP are required by the C4 pathway for each hexose that is produced?

Accepted Answer

A)  48 
B)  30 
C)  24 
D)  18 
E)  12

Question 5

Describe the three stages of the Calvin cycle.

Accepted Answer

The answer of Describe the three stages of the Calvin...

Question 6

What pathway ensures that sufficient amounts of CO2 are available to minimize wasteful photorespiration by transporting CO2 from the mesophyll cells to the bundle sheath cells?

Accepted Answer

A)  crassulacean acid metabolism 
B)  gluconeogenesis 
C)  C4 pathway 
D)  sucrose synthesis 
E)  cellulose synthesis

Question 7

What is another name for ribulose 1,5-bisphosphate carboxylase/oxygenase?

Accepted Answer

A)  rubisco 
B)  ribulooxidase 
C)  ribulocarboxidase 
D)  ribulose bisphosphatase 
E)  None of the answers is correct.

Question 8

Which of the following is a readily mobilized sugar that is commonly used to transport carbohydrates through a plant?

Accepted Answer

A)  glucose 
B)  fructose 
C)  sucrose 
D)  amylose 
E)  amylopectin

Question 9

What is the hexose monophosphate pool?

Accepted Answer

The answer of What is the hexose monophosphate pool?...

Question 10

Give the sequence of reactions involved in the synthesis of sucrose from two glucose6-phosphate molecules.

Accepted Answer

The answer of Give the sequence of reactions involved in...

Question 11

Which of the following types of organisms obtain their energy from chemical fuels produced by other organisms?

Accepted Answer

A)  heterotrophs 
B)  autotrophs 
C)  chemotrophs 
D)  phototrophs 
E)  heterotrophs and chemotrophs

Question 12

Which enzyme is cited as the most abundant enzyme in the biosphere? Why is this so?

Accepted Answer

The answer of Which enzyme is cited as the most...

Question 13

What is photorespiration? Why is it wasteful?

Accepted Answer

The answer of What is photorespiration? Why is it wasteful?...

Question 14

Why is the chemistry of the "dark reactions" referred to as a cycle and not a pathway?

Accepted Answer

The answer of Why is the chemistry of the "dark...

Question 15

Hemolytic anemia is caused by a deficiency of the enzyme ______________________.

Accepted Answer

The answer of Hemolytic anemia is caused by a deficiency...

Question 16

Which of the following types of organisms can synthesize glucose from carbon dioxide and water?

Accepted Answer

A)  heterotrophs 
B)  autotrophs 
C)  chemotrophs 
D)  phototrophs 
E)  autotrophs and phototrophs

Question 17

The first step of the Calvin cycle involves the addition of CO₂ to _______________________ to produce two molecules of 3-phosphoglycerate.

Accepted Answer

The answer of The first step of the Calvin cycle...

Question 18

The KM of glucose-6-phosphate dehydrogenase for NADP+ is _____________ the KM for NAD+.

Accepted Answer

A)  a thousand times greater than 
B)  ten times greater than 
C)  equivalent to 
D)  ten times lower than 
E)  a thousand times lower than

Question 19

Which cofactor supplies the reducing power for reduction of glutathione by glutathione reductase?

Accepted Answer

A)  FMN 
B)  TPP 
C)  FAD 
D)  NADPH 
E)  NADH

Question 20

What intermediate is formed in the oxygenase reaction catalyzed by rubisco?

Accepted Answer

A)  glyoxylate 
B)  hydroxypyruvate 
C)  glycerate 
D)  phosphoglycolate 
E)  malate

Exam 20: The Calvin Cycle and the Pentose Phosphate Pathway

The purpose of the pentose phosphate pathway is to

The enzymes that catalyze the dark reactions of photosynthesis are located in the ___________ of the chloroplasts.

In photosynthesis,light energy is transformed into ATP and biosynthetic reducing power in the form of _____.

How many ATP are required by the C₄ pathway for each hexose that is produced?

Describe the three stages of the Calvin cycle.

What pathway ensures that sufficient amounts of CO₂ are available to minimize wasteful photorespiration by transporting CO₂ from the mesophyll cells to the bundle sheath cells?

What is another name for ribulose 1,5-bisphosphate carboxylase/oxygenase?

Which of the following is a readily mobilized sugar that is commonly used to transport carbohydrates through a plant?

What is the hexose monophosphate pool?

Give the sequence of reactions involved in the synthesis of sucrose from two glucose6-phosphate molecules.

Which of the following types of organisms obtain their energy from chemical fuels produced by other organisms?

Which enzyme is cited as the most abundant enzyme in the biosphere? Why is this so?

What is photorespiration? Why is it wasteful?

Why is the chemistry of the "dark reactions" referred to as a cycle and not a pathway?

Hemolytic anemia is caused by a deficiency of the enzyme ______________________.

Which of the following types of organisms can synthesize glucose from carbon dioxide and water?

The first step of the Calvin cycle involves the addition of CO₂ to _______________________ to produce two molecules of 3-phosphoglycerate.

The K_M of glucose-6-phosphate dehydrogenase for NADP⁺ is _____________ the K_M for NAD⁺.

Which cofactor supplies the reducing power for reduction of glutathione by glutathione reductase?

What intermediate is formed in the oxygenase reaction catalyzed by rubisco?

Exam 20: The Calvin Cycle and the Pentose Phosphate Pathway

The purpose of the pentose phosphate pathway is to

The enzymes that catalyze the dark reactions of photosynthesis are located in the ___________ of the chloroplasts.

In photosynthesis,light energy is transformed into ATP and biosynthetic reducing power in the form of _____.

How many ATP are required by the C4 pathway for each hexose that is produced?

Describe the three stages of the Calvin cycle.

What pathway ensures that sufficient amounts of CO2 are available to minimize wasteful photorespiration by transporting CO2 from the mesophyll cells to the bundle sheath cells?

What is another name for ribulose 1,5-bisphosphate carboxylase/oxygenase?

Which of the following is a readily mobilized sugar that is commonly used to transport carbohydrates through a plant?

What is the hexose monophosphate pool?

Give the sequence of reactions involved in the synthesis of sucrose from two glucose6-phosphate molecules.

Which of the following types of organisms obtain their energy from chemical fuels produced by other organisms?

Which enzyme is cited as the most abundant enzyme in the biosphere? Why is this so?

What is photorespiration? Why is it wasteful?

Why is the chemistry of the "dark reactions" referred to as a cycle and not a pathway?

Hemolytic anemia is caused by a deficiency of the enzyme ______________________.

Which of the following types of organisms can synthesize glucose from carbon dioxide and water?

The first step of the Calvin cycle involves the addition of CO2 to _______________________ to produce two molecules of 3-phosphoglycerate.

The KM of glucose-6-phosphate dehydrogenase for NADP+ is _____________ the KM for NAD+.

Which cofactor supplies the reducing power for reduction of glutathione by glutathione reductase?

What intermediate is formed in the oxygenase reaction catalyzed by rubisco?

How many ATP are required by the C₄ pathway for each hexose that is produced?

What pathway ensures that sufficient amounts of CO₂ are available to minimize wasteful photorespiration by transporting CO₂ from the mesophyll cells to the bundle sheath cells?

The first step of the Calvin cycle involves the addition of CO₂ to _______________________ to produce two molecules of 3-phosphoglycerate.

The K_M of glucose-6-phosphate dehydrogenase for NADP⁺ is _____________ the K_M for NAD⁺.