Question 1

Green plants contain

Accepted Answer

A)  only chlorophyll a. 
B)  only chlorophyll b. 
C)  both chlorophyll a and chlorophyll b. 
D)  bacteriochlorophyll. 
A)  only chlorophyll a. 
B)  only chlorophyll b. 
C)  both chlorophyll a and chlorophyll b. 
D)  bacteriochlorophyll.

Question 2

The region of the chloroplast between the inner membrane and the thylakoid membrane is called

Accepted Answer

A)  the stroma. 
B)  the thylakoid space. 
C)  the intermembrane space. 
D)  the grana. 
A)  the stroma. 
B)  the thylakoid space. 
C)  the intermembrane space. 
D)  the grana.

Question 3

The C4 pathway for carbon dioxide fixation has what requirement compared to the Calvin cycle?

Accepted Answer

A)  requires more ATP 
B)  requires less ATP 
C)  requires more NADPH 
D)  requires less NADPH 
A)  requires more ATP 
B)  requires less ATP 
C)  requires more NADPH 
D)  requires less NADPH

Question 4

The light phase of photosynthesis is closest to which other metabolic process?

Accepted Answer

A)  Anaerobic Glycolysis. 
B)  The Pentose Monophosphate Pathway. 
C)  The Kreb's Cycle. 
D)  The Electron Transport System 
E)  The reactions in the light phase are not similar to any other pathway. 
A)  Anaerobic Glycolysis. 
B)  The Pentose Monophosphate Pathway. 
C)  The Kreb's Cycle. 
D)  The Electron Transport System 
E)  The reactions in the light phase are not similar to any other pathway.

Question 5

Ferredoxin is important in photosynthesis in forming NADH.

Accepted Answer

A) True 
 B)False

Question 6

In plants that use the C4 pathway there is less likelihood for the occurrence of which process compared to plants that rely exclusively on the Calvin cycle?

Accepted Answer

A)  gluconeogenesis 
B)  photorespiration 
C)  the pentose phosphate pathway 
D)  lipid anabolism 
A)  gluconeogenesis 
B)  photorespiration 
C)  the pentose phosphate pathway 
D)  lipid anabolism

Question 7

Two different types of chlorophyll are used by most plants for the following reason:

Accepted Answer

A)  Two chlorophylls allow for absorbing light from a larger portion of the light spectrum. 
B)  The different chorophylls are used in different parts of the photosynthesis process. 
C)  One type is used in photosystem I and the other in phototsystem II. 
D)  The different chlorophylls are located in different compartments of the chloroplast. 
E)  It is not know why there are two different chlorophylls. 
A)  Two chlorophylls allow for absorbing light from a larger portion of the light spectrum. 
B)  The different chorophylls are used in different parts of the photosynthesis process. 
C)  One type is used in photosystem I and the other in phototsystem II. 
D)  The different chlorophylls are located in different compartments of the chloroplast. 
E)  It is not know why there are two different chlorophylls.

Question 8

Cyanobacteria contain

Accepted Answer

A)  only chlorophyll a. 
B)  only chlorophyll b. 
C)  both chlorophyll a and chlorophyll b. 
D)  bacteriochlorophyll. 
A)  only chlorophyll a. 
B)  only chlorophyll b. 
C)  both chlorophyll a and chlorophyll b. 
D)  bacteriochlorophyll.

Question 9

A specialized pair of chlorophylls exists at

Accepted Answer

A)  the antenna complexes. 
B)  the accessory pigments. 
C)  the reaction centers. 
D)  the stroma. 
A)  the antenna complexes. 
B)  the accessory pigments. 
C)  the reaction centers. 
D)  the stroma.

Question 10

In order to regenerate ribulose 1,5 bisphosphate,the following reaction is required:

Accepted Answer

A)  A phosphate group must be added to ribulose-1-phosphate. 
B)  The enzyme involved is phosphoribulose kinase. 
C)  ATP is used as a source of phosphate. 
D)  Both phosphoribulose kinase and ATP are needed. 
E)  All of these statements are true. 
A)  A phosphate group must be added to ribulose-1-phosphate. 
B)  The enzyme involved is phosphoribulose kinase. 
C)  ATP is used as a source of phosphate. 
D)  Both phosphoribulose kinase and ATP are needed. 
E)  All of these statements are true.

Question 11

Light energy absorbed in chloroplasts is used in the light phase for all of these reactions,except:

Accepted Answer

A)  To reduce water. 
B)  To make ATP. 
C)  To generate NADPH. 
D)  To reduce water and to generate oxygen, O2. 
E)  All of these occur during the light phase. 
A)  To reduce water. 
B)  To make ATP. 
C)  To generate NADPH. 
D)  To reduce water and to generate oxygen, O2. 
E)  All of these occur during the light phase.

Question 12

Accessory pigments

Accepted Answer

A)  transfer electrons to reaction center chlorophylls. 
B)  transfer energy to reaction center chlorophylls. 
C)  transfer electrons from reaction center chlorophylls to phaeophytins. 
D)  transfer electrons from reaction center chlorophylls to ferredoxin. 
E)  All of these statements are true. 
A)  transfer electrons to reaction center chlorophylls. 
B)  transfer energy to reaction center chlorophylls. 
C)  transfer electrons from reaction center chlorophylls to phaeophytins. 
D)  transfer electrons from reaction center chlorophylls to ferredoxin. 
E)  All of these statements are true.

Question 13

Which of the following is true concerning chlorophyll?

Accepted Answer

A)  It abosrbs green light, which is why leaves are green 
B)  Chlorophyll a and b each have peaks of absorption at two different wavelengths 
C)  Chlorophyll a has a maximum absorption at 600 nm 
D)  Between the two chlorophylls, light is absorbed between 400 and 700 nm 
A)  It abosrbs green light, which is why leaves are green 
B)  Chlorophyll a and b each have peaks of absorption at two different wavelengths 
C)  Chlorophyll a has a maximum absorption at 600 nm 
D)  Between the two chlorophylls, light is absorbed between 400 and 700 nm

Question 14

The electrons used in photosynthesis come first from this molecule or atom:

Accepted Answer

A)  Hydrogen (H2). 
B)  Manganese atom (Mn). 
C)  NADPH 
D)  Oxygen (O2). 
E)  Water (H2O). 
A)  Hydrogen (H2). 
B)  Manganese atom (Mn). 
C)  NADPH 
D)  Oxygen (O2). 
E)  Water (H2O).

Question 15

It is believed that the ratio of cyclic electron transport to Z-scheme photosynthesis changes in response to metabolic demands.If a plant were actively synthesizing starch from the glucose produced,how would it alter these processes compared to a plant just performing the Calvin cycle to produce glucose?

Accepted Answer

A)  More cyclic photophosphorylation, less Z-scheme. 
B)  More Z-scheme photosynthesis, less cyclic photophosphorylation. 
C)  No significant difference. 
D)  Impossible to predict from the information provided. 
A)  More cyclic photophosphorylation, less Z-scheme. 
B)  More Z-scheme photosynthesis, less cyclic photophosphorylation. 
C)  No significant difference. 
D)  Impossible to predict from the information provided.

Question 16

The fixation of CO2 to form sugars requires the following:

Accepted Answer

A)  Oxygen, O2. 
B)  ATP. 
C)  NADPH. 
D)  Both ATP and NADPH. 
E)  All 3 of these are required to convert CO2 to sugar. 
A)  Oxygen, O2. 
B)  ATP. 
C)  NADPH. 
D)  Both ATP and NADPH. 
E)  All 3 of these are required to convert CO2 to sugar.

Question 17

The efficiency of energy use in photosynthesis is approximately

Accepted Answer

A)  99% 
B)  65% 
C)  30% 
D)  2% 
A)  99% 
B)  65% 
C)  30% 
D)  2%

Question 18

Which of the following correctly describes a major difference between pheophytins and chlorophylls?

Accepted Answer

A)  Pheophytins contain iron in their centers while chlorophylls contain magnesium. 
B)  Chlorophylls contain iron in their centers while pheophytins contain magnesium. 
C)  Pheophytins contain no metal ion in their centers. 
D)  Pheophytins aren't at all like chlorophylls, but are quinones. 
A)  Pheophytins contain iron in their centers while chlorophylls contain magnesium. 
B)  Chlorophylls contain iron in their centers while pheophytins contain magnesium. 
C)  Pheophytins contain no metal ion in their centers. 
D)  Pheophytins aren't at all like chlorophylls, but are quinones.

Question 19

One very important reason for the Hatch-Slack Pathway of photosynthesis is to increase the concentration of CO2 in the chloroplast.

Accepted Answer

A) True 
 B)False

Question 20

The terminal electron acceptor during the light phase of photosynthesis in green plants is

Accepted Answer

A)  Hydrogen (H2 H2O). 
B)  NAD+ ( NADH). 
C)  NADP+ ( NADPH). 
D)  Oxygen (O2 H2O). 
E)  Sulfur ( H2S). 
A)  Hydrogen (H2 H2O). 
B)  NAD+ ( NADH). 
C)  NADP+ ( NADPH). 
D)  Oxygen (O2 H2O). 
E)  Sulfur ( H2S).

Exam 22: Photosynthesis

Green plants contain

The region of the chloroplast between the inner membrane and the thylakoid membrane is called

The C4 pathway for carbon dioxide fixation has what requirement compared to the Calvin cycle?

The light phase of photosynthesis is closest to which other metabolic process?

Ferredoxin is important in photosynthesis in forming NADH.

In plants that use the C4 pathway there is less likelihood for the occurrence of which process compared to plants that rely exclusively on the Calvin cycle?

Two different types of chlorophyll are used by most plants for the following reason:

Cyanobacteria contain

A specialized pair of chlorophylls exists at

In order to regenerate ribulose 1,5 bisphosphate,the following reaction is required:

Light energy absorbed in chloroplasts is used in the light phase for all of these reactions,except:

Accessory pigments

Which of the following is true concerning chlorophyll?

The electrons used in photosynthesis come first from this molecule or atom:

The fixation of CO2 to form sugars requires the following:

The efficiency of energy use in photosynthesis is approximately

Which of the following correctly describes a major difference between pheophytins and chlorophylls?

One very important reason for the Hatch-Slack Pathway of photosynthesis is to increase the concentration of CO2 in the chloroplast.

The terminal electron acceptor during the light phase of photosynthesis in green plants is

Biochemistry and the Organization of Cells

Water: The Solvent for Biochemical Reactions

Amino Acids and Peptides

The Three-Dimensional Structure of Proteins

Protein Purification and Characterization Techniques

The Behavior of Proteins: Enzymes

The Behavior of Proteins: Enzymes, Mechanisms, and Control

Lipids and Proteins Are Associated in Biological Membranes

Nucleic Acids: How Structure Conveys Information

Biosynthesis of Nucleic Acids: Replication

Transcription of the Genetic Code: Biosynthesis of Rna

Protein Synthesis: Translation of the Genetic Message

Nucleic Acid Biotechnology Techniques

Viruses, Cancer, and Immunology

The Importance of Energy Changes and Electron Transfer in Metabolism

Carbohydrates

Glycolysis

Storage Mechanisms and Control in Carbohydrate Metabolism

The Citric Acid Cycle

Electron Transport and Oxidative Phosphorylation

Lipid Metabolism

The Metabolism of Nitrogen

Integration of Metabolism: Cellular Signaling

Filters

The C₄ pathway for carbon dioxide fixation has what requirement compared to the Calvin cycle?

In plants that use the C₄ pathway there is less likelihood for the occurrence of which process compared to plants that rely exclusively on the Calvin cycle?

The fixation of CO₂ to form sugars requires the following:

One very important reason for the Hatch-Slack Pathway of photosynthesis is to increase the concentration of CO₂ in the chloroplast.