Question 1

While chlorophyll contains a different metal ion, its ring structure is very similar to the ring structure in steroids.

Accepted Answer

A) True 
 B)False

Question 2

Green plants contain

Accepted Answer

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

Question 3

Photosynthetic bacteria which do not use water as the ultimate source of electrons

Accepted Answer

A)  only contain chlorophyll a. 
B)  only contain chlorophyll b. 
C)  do not produce oxygen. 
D)  have two photosystems. 
E)  none of these 
A)  only contain chlorophyll a. 
B)  only contain chlorophyll b. 
C)  do not produce oxygen. 
D)  have two photosystems. 
E)  none of these

Question 4

In the first reaction of carbon dioxide fixation in photosynthesis, CO2 reacts with

Accepted Answer

A)  ribulose 5-phosphate. 
B)  ribulose 1,5- bis phosphate. 
C)  ribose 5-phosphate. 
D)  xylulose 5-phosphate. 
E)  glyceraldehyde 3-phosphate 
A)  ribulose 5-phosphate. 
B)  ribulose 1,5- bis phosphate. 
C)  ribose 5-phosphate. 
D)  xylulose 5-phosphate. 
E)  glyceraldehyde 3-phosphate

Question 5

The actual CO2 fixation process in photosynthesis is the addition of CO2 into a 5 carbon compound to yield

Accepted Answer

A)  ribulose 5-phosphate. 
B)  ribulose 1,5- bis phosphate. 
C)  erythrose 4-phosphate. 
D)  3-phosphoglycerate. 
E)  glucose 6-phosphate 
A)  ribulose 5-phosphate. 
B)  ribulose 1,5- bis phosphate. 
C)  erythrose 4-phosphate. 
D)  3-phosphoglycerate. 
E)  glucose 6-phosphate

Question 6

In chloroplasts,

Accepted Answer

A)  the light reactions take place in the thylakoid disks, whereas the dark reactions occur in the stroma 
B)  the dark reactions take place in the thylakoid disks, whereas the light reactions occur in the stroma 
C)  the light reactions take place in the thylakoid space, whereas the dark reactions occur in the stroma 
D)  the dark reactions take place in the thylakoid space, whereas the light reactions occur in the stroma 
E)  none of these 
A)  the light reactions take place in the thylakoid disks, whereas the dark reactions occur in the stroma 
B)  the dark reactions take place in the thylakoid disks, whereas the light reactions occur in the stroma 
C)  the light reactions take place in the thylakoid space, whereas the dark reactions occur in the stroma 
D)  the dark reactions take place in the thylakoid space, whereas the light reactions occur in the stroma 
E)  none of these

Question 7

The key element at the center of chlorophyll is

Accepted Answer

A)  chlorine. 
B)  copper. 
C)  iron. 
D)  magnesium. 
E)  manganese. 
A)  chlorine. 
B)  copper. 
C)  iron. 
D)  magnesium. 
E)  manganese.

Question 8

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 9

After the CO2 fixation step in photosynthesis, the production of sugars takes place

Accepted Answer

A)  as a reversal of glycolysis. 
B)  as a reversal of the citric acid cycle. 
C)  in the same manner as gluconeogenesis. 
D)  as a reversal of the pentose phosphate pathway. 
E)  the same as in glycolysis 
A)  as a reversal of glycolysis. 
B)  as a reversal of the citric acid cycle. 
C)  in the same manner as gluconeogenesis. 
D)  as a reversal of the pentose phosphate pathway. 
E)  the same as in glycolysis

Question 10

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 11

​ Which of the following types of bacteria contain bacteriochlorophylls, but do not use water as the ultimate source of electrons for the redox reactions of photosynthesis and do not produce oxygen?

Accepted Answer

A)  Acidobacteria and cyanobacteria 
B)  Green and purple sulfur bacteria 
C)  Chlamydiae and fusobacteria 
D)  Spirochaetes and actinobacteria 
A)  Acidobacteria and cyanobacteria 
B)  Green and purple sulfur bacteria 
C)  Chlamydiae and fusobacteria 
D)  Spirochaetes and actinobacteria

Question 12

The oxygen evolving complex consists of

Accepted Answer

A)  accessory pigments. 
B)  a manganese-containing protein. 
C)  the reaction center chlorophylls. 
D)  ferredoxin. 
E)  none of these 
A)  accessory pigments. 
B)  a manganese-containing protein. 
C)  the reaction center chlorophylls. 
D)  ferredoxin. 
E)  none of these

Question 13

In which part of the chloroplast does reduction of CO2 during photosynthesis primarily occur?

Accepted Answer

A)  Grana. 
B)  Thylakoid disks. 
C)  Stroma. 
D)  Thylakoid space. 
E)  It is not known where this reaction occurs in the chloroplast. 
A)  Grana. 
B)  Thylakoid disks. 
C)  Stroma. 
D)  Thylakoid space. 
E)  It is not known where this reaction occurs in the chloroplast.

Question 14

Where does the actual CO2 fixation process takes place?

Accepted Answer

A)  the stroma. 
B)  the thylakoid space. 
C)  the intermembrane space. 
D)  the cytosol. 
E)  none of these 
A)  the stroma. 
B)  the thylakoid space. 
C)  the intermembrane space. 
D)  the cytosol. 
E)  none of these

Question 15

Which of the following is NOT an intermediate in the C4 pathway?

Accepted Answer

A)  phosphoenolpyruvate 
B)  oxaloacetate 
C)  malate 
D)  fumarate 
A)  phosphoenolpyruvate 
B)  oxaloacetate 
C)  malate 
D)  fumarate

Question 16

Chlorophyll differs from heme because it

Accepted Answer

A)  has a cyclohexene ring fused to the tetrapyrrole ring system. 
B)  has a 16-carbon unbranched side chain. 
C)  contains magnesium rather than iron. 
D)  has a fully saturated tetrapyrrole ring. 
E)  none of these 
A)  has a cyclohexene ring fused to the tetrapyrrole ring system. 
B)  has a 16-carbon unbranched side chain. 
C)  contains magnesium rather than iron. 
D)  has a fully saturated tetrapyrrole ring. 
E)  none of these

Question 17

The nuclear gene for Rubisco codes for the catalytic subunit, while the regulatory gene is found in the chloroplast.

Accepted Answer

A) True 
 B)False

Question 18

The first CO2 fixing reaction of the Hatch-Slack pathway is:

Accepted Answer

A)  Conversion of phosphoenolpyruvate and CO2 to oxaloacetate. 
B)  Conversion of succinate and CO2 to α -ketoglutarate. 
C)  Conversion of acetate and CO2 to pyruvate. 
D)  Conversion of acetate and CO2 to malonate. 
E)  More than one of these reactions can initiate the Hatch-Slack Pathway. 
A)  Conversion of phosphoenolpyruvate and CO2 to oxaloacetate. 
B)  Conversion of succinate and CO2 to α -ketoglutarate. 
C)  Conversion of acetate and CO2 to pyruvate. 
D)  Conversion of acetate and CO2 to malonate. 
E)  More than one of these reactions can initiate the Hatch-Slack Pathway.

Question 19

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.

Exam 22: Photosynthesis

While chlorophyll contains a different metal ion, its ring structure is very similar to the ring structure in steroids.

Green plants contain

Photosynthetic bacteria which do not use water as the ultimate source of electrons

In the first reaction of carbon dioxide fixation in photosynthesis, CO2 reacts with

The actual CO2 fixation process in photosynthesis is the addition of CO2 into a 5 carbon compound to yield

In chloroplasts,

The key element at the center of chlorophyll is

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

After the CO2 fixation step in photosynthesis, the production of sugars takes place

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

​ Which of the following types of bacteria contain bacteriochlorophylls, but do not use water as the ultimate source of electrons for the redox reactions of photosynthesis and do not produce oxygen?

The oxygen evolving complex consists of

In which part of the chloroplast does reduction of CO2 during photosynthesis primarily occur?

Where does the actual CO2 fixation process takes place?

Which of the following is NOT an intermediate in the C4 pathway?

Chlorophyll differs from heme because it

The nuclear gene for Rubisco codes for the catalytic subunit, while the regulatory gene is found in the chloroplast.

The first CO2 fixing reaction of the Hatch-Slack pathway is:

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

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 the 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

In the first reaction of carbon dioxide fixation in photosynthesis, CO₂ reacts with

The actual CO₂ fixation process in photosynthesis is the addition of CO₂ into a 5 carbon compound to yield

After the CO₂ fixation step in photosynthesis, the production of sugars takes place

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

Which of the following types of bacteria contain bacteriochlorophylls, but do not use water as the ultimate source of electrons for the redox reactions of photosynthesis and do not produce oxygen?

In which part of the chloroplast does reduction of CO₂ during photosynthesis primarily occur?

Where does the actual CO₂ fixation process takes place?

Which of the following is NOT an intermediate in the C₄ pathway?

The first CO₂ fixing reaction of the Hatch-Slack pathway is: