Question 1

The energetic equivalent of ________ ATP molecule(s) is/are consumed in transporting CO2 to the chloroplasts of the bundle-sheath cells?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  6 
A)  1 
B)  2 
C)  3 
D)  4 
E)  6

Question 2

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

Accepted Answer

Rubisco (for 1,5-bisphosphate carboxylas

Question 3

Choose the correct answer from the list below. Not all of the answers will be used.
-The product of CO2 fixation with ribulose-1,6-bisphosphate is ____________.

Accepted Answer

A) rubisco 
B) transketolase 
C) crassulacean acid metabolism 
D) autotrophs 
E) C6
F)pyruvate-Pi dikinase
G)hexose monophosphate pool
H)heterotrophs
I)glycolysis
J)C4
K)sucrose
L)phosphoglycerate 
A) rubisco 
B) transketolase 
C) crassulacean acid metabolism 
D) autotrophs 
E) C6
F)pyruvate-Pi dikinase
G)hexose monophosphate pool
H)heterotrophs
I)glycolysis
J)C4
K)sucrose
L)phosphoglycerate

Question 4

How does light alter the fixation of CO2?

Accepted Answer

Rubisco is activated when plants are exp

Question 5

Write the balanced reaction for the Calvin cycle.

Accepted Answer

6 CO2 + 18 ATP + 12

Question 6

The most abundant protein on Earth is:

Accepted Answer

A)  ribulose 1,5-bisphosphate. 
B)  aldolase. 
C)  rubisco. 
D)  phosphopentose epimerase. 
E)  transketolase. 
A)  ribulose 1,5-bisphosphate. 
B)  aldolase. 
C)  rubisco. 
D)  phosphopentose epimerase. 
E)  transketolase.

Question 7

Describe, in biochemical terms, how bread becomes stale.

Accepted Answer

During the baking process, starches in b

Question 8

The binding site of Mg2+ to rubisco involves the formation of a ________________ group between lysine 221 and CO2.

Accepted Answer

Question 9

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

Accepted Answer

The Calvin cycle begins with the additio

Question 10

The protein that regulates the Calvin cycle is:

Accepted Answer

A)  protein kinase C. 
B)  rubisco. 
C)  thioredoxin. 
D)  ferredoxin-thioredoxin reductase. 
E)  None of the above. 
A)  protein kinase C. 
B)  rubisco. 
C)  thioredoxin. 
D)  ferredoxin-thioredoxin reductase. 
E)  None of the above.

Question 11

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

Accepted Answer

ribulose-1

Question 12

Choose the correct answer from the list below. Not all of the answers will be used.
-____________ is the final enzyme in the C4 pathway.

Accepted Answer

A) rubisco 
B) transketolase 
C) crassulacean acid metabolism 
D) autotrophs 
E) C6
F)pyruvate-Pi dikinase
G)hexose monophosphate pool
H)heterotrophs
I)glycolysis
J)C4
K)sucrose
L)phosphoglycerate 
A) rubisco 
B) transketolase 
C) crassulacean acid metabolism 
D) autotrophs 
E) C6
F)pyruvate-Pi dikinase
G)hexose monophosphate pool
H)heterotrophs
I)glycolysis
J)C4
K)sucrose
L)phosphoglycerate

Question 13

Plants store glucose as ___________ and ____________.

Accepted Answer

A)  starch; sucrose 
B)  fructose; sucrose 
C)  starch; fructose 
D)  All of the above. 
E)  None of the above. 
A)  starch; sucrose 
B)  fructose; sucrose 
C)  starch; fructose 
D)  All of the above. 
E)  None of the above.

Question 14

Choose the correct answer from the list below. Not all of the answers will be used.
-____________: A metabolic adaptation employed by plants that live in hot, dry climates.

Accepted Answer

A) rubisco 
B) transketolase 
C) crassulacean acid metabolism 
D) autotrophs 
E) C6
F)pyruvate-Pi dikinase
G)hexose monophosphate pool
H)heterotrophs
I)glycolysis
J)C4
K)sucrose
L)phosphoglycerate 
A) rubisco 
B) transketolase 
C) crassulacean acid metabolism 
D) autotrophs 
E) C6
F)pyruvate-Pi dikinase
G)hexose monophosphate pool
H)heterotrophs
I)glycolysis
J)C4
K)sucrose
L)phosphoglycerate

Question 15

________________ is an example of a mechanism of accelerating photosynthesis by increasing CO2 concentration.

Accepted Answer

C4, or Hat

Question 16

What is photorespiration? Why is it wasteful?

Accepted Answer

Normal photosynthesis produces O2 and fi

Question 17

The biochemist who first decribed the pathway for fixing CO2 is ________________.

Accepted Answer

Question 18

Describe the role of thioredoxin in regulating the Calvin cycle.

Accepted Answer

The light reactions of photosynthesis re

Question 19

In C4 plants, carbon dioxide is added to ________________ to form oxaloacetate, which is reduced to malate, which carries CO2 to the bundle-sheath cells.

Accepted Answer

Question 20

Volcanoes, which spew millions of tons of gases and particles into the atmosphere, cause an ________________ in photosynthesis specifically during the daytime.

Accepted Answer

The answer of Volcanoes, which spew millions of tons of...

Exam 23: The Calvin Cycle

The energetic equivalent of ________ ATP molecule(s) is/are consumed in transporting CO2 to the chloroplasts of the bundle-sheath cells?

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

Choose the correct answer from the list below. Not all of the answers will be used. -The product of CO2 fixation with ribulose-1,6-bisphosphate is ____________.

How does light alter the fixation of CO2?

Write the balanced reaction for the Calvin cycle.

The most abundant protein on Earth is:

Describe, in biochemical terms, how bread becomes stale.

The binding site of Mg2+ to rubisco involves the formation of a ________________ group between lysine 221 and CO2.

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

The protein that regulates the Calvin cycle is:

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

Choose the correct answer from the list below. Not all of the answers will be used. -____________ is the final enzyme in the C4 pathway.

Plants store glucose as ___________ and ____________.

Choose the correct answer from the list below. Not all of the answers will be used. -____________: A metabolic adaptation employed by plants that live in hot, dry climates.

________________ is an example of a mechanism of accelerating photosynthesis by increasing CO2 concentration.

What is photorespiration? Why is it wasteful?

The biochemist who first decribed the pathway for fixing CO2 is ________________.

Describe the role of thioredoxin in regulating the Calvin cycle.

In C4 plants, carbon dioxide is added to ________________ to form oxaloacetate, which is reduced to malate, which carries CO2 to the bundle-sheath cells.

Volcanoes, which spew millions of tons of gases and particles into the atmosphere, cause an ________________ in photosynthesis specifically during the daytime.

Biochemistry and the Unity of Life

Water, Weak Bonds, and the Generation of Order Out of Chaos

Amino Acids

Protein Three-Dimensional Structure

Techniques in Protein Biochemistry

Basic Concepts of Enzyme Action

Kinetics and Regulation

Mechanisms and Inhibitors

Hemoglobin: an Allosteric Protein

Carbohydrates

Lipids

Membrane Structure and Function

Signal Transduction Pathways

Digestion: Turning a Meal Into Cellular Biochemicals

Metabolism: Basic Concepts and Design

Glycolysis

Gluconeogenesis

Preparation for the Cycle

Harvesting Electrons From the Cycle

The Electron Transport Chain

The Proton-Motive Force

The Light Reactions

Glycogen Degradation

Glycogen Synthesis

The Pentose Phosphate Pathway

Fatty Acid Degredation

Fatty Acid Synthesis

Lipid Synthesis

Amino Acid Degradation and the Urea Cycle

Amino Acids Synthesis

Nucleotide Metabolism

The Structure of Informational Macromolecules: Dna and Rna

DNA Replication

DNA Repair and Recombination

RNA Synthesis and Regulation in Prokaryotes

Gene Expression in Eukaryotes

RNA Processing in Eukaryotes

The Genetic Code

The Mechanism of Protein Synthesis

Recombinant DNA Techniques

Filters

The energetic equivalent of ________ ATP molecule(s) is/are consumed in transporting CO₂ to the chloroplasts of the bundle-sheath cells?

Choose the correct answer from the list below. Not all of the answers will be used. -The product of CO₂ fixation with ribulose-1,6-bisphosphate is ____________.

How does light alter the fixation of CO₂?

The binding site of Mg²⁺to rubisco involves the formation of a ________________ group between lysine 221 and CO₂.

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

Choose the correct answer from the list below. Not all of the answers will be used. -____________ is the final enzyme in the C₄ pathway.

Plants store glucose as _ and __.

________________ is an example of a mechanism of accelerating photosynthesis by increasing CO₂concentration.

The biochemist who first decribed the pathway for fixing CO₂ is ________________.

In C₄ plants, carbon dioxide is added to ________________ to form oxaloacetate, which is reduced to malate, which carries CO₂ to the bundle-sheath cells.