Question 1

After the formation of 3-phosphoglyceric acid, the reactions in the dark phase of photosynthesis are essentially the same as those in gluconeogenesis.

Accepted Answer

A) True 
 B)False

Question 2

The enzyme ribulose 1,5-bisphosphate carboxylase

Accepted Answer

A)  consists of eight catalytic subunits encoded by a chloroplast and eight regulatory subunits encoded by a nuclear gene. 
B)  is difficult to isolate and study because it occurs in small amount in plant cells. 
C)  is nonallosteric. 
D)  is not involved in reactions linked to oxygen. 
A)  consists of eight catalytic subunits encoded by a chloroplast and eight regulatory subunits encoded by a nuclear gene. 
B)  is difficult to isolate and study because it occurs in small amount in plant cells. 
C)  is nonallosteric. 
D)  is not involved in reactions linked to oxygen.

Question 3

Which of the following is not a component of the electron transport chain that links Photosystem I and Photosystem II?

Accepted Answer

A)  NADPH 
B)  pheophytin 
C)  plastoquinone 
D)  cytochrome f 
A)  NADPH 
B)  pheophytin 
C)  plastoquinone 
D)  cytochrome f

Question 4

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 5

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. 
E)  none of these 
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. 
E)  none of these

Question 6

Rubisco is a rare example of an enzyme whose genetic information is found in two different cellular compartments.

Accepted Answer

A) True 
 B)False

Question 7

A specialized pair of chlorophylls exists at

Accepted Answer

A)  the antenna complexes. 
B)  the accessory pigments. 
C)  the reaction centers. 
D)  the stroma. 
E)  the bottom of the roots in most plants 
A)  the antenna complexes. 
B)  the accessory pigments. 
C)  the reaction centers. 
D)  the stroma. 
E)  the bottom of the roots in most plants

Question 8

Which of the following is not true regarding the C4 pathway?

Accepted Answer

A)  The C4 pathway allows for the concentration of CO2 
B)  the KM for CO2 is lower with Rubisco than for phosphoenolpyruvate carboxylase 
C)  Rubisco also has an oxygenase activity that appears to be a wasteful process in terms of energy production 
D)  The C4 pathway alleviates some of the wastefulness of the oxygenase activity of Rubisco by concentrating CO2 in the interior of the plant. 
A)  The C4 pathway allows for the concentration of CO2 
B)  the KM for CO2 is lower with Rubisco than for phosphoenolpyruvate carboxylase 
C)  Rubisco also has an oxygenase activity that appears to be a wasteful process in terms of energy production 
D)  The C4 pathway alleviates some of the wastefulness of the oxygenase activity of Rubisco by concentrating CO2 in the interior of the plant.

Question 9

Which of the following is true?

Accepted Answer

A)  A protein with a manganese ion is key to the conversion of O2 to water 
B)  The electron transport chain in photosynthesis is identical to the one in mitochondria 
C)  Parts of the electron transport chain in photosynthesis are similar to the electron transport chain in mitochondria 
D)  Photosynthesis is the exact opposite of respiration 
E)  none of these 
A)  A protein with a manganese ion is key to the conversion of O2 to water 
B)  The electron transport chain in photosynthesis is identical to the one in mitochondria 
C)  Parts of the electron transport chain in photosynthesis are similar to the electron transport chain in mitochondria 
D)  Photosynthesis is the exact opposite of respiration 
E)  none of these

Question 10

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 11

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 12

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 13

In which part of the chloroplast does production of oxygen 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

For the net synthesis of one six-carbon sugar from CO2 in photosynthesis there is a requirement for

Accepted Answer

A)  12 ATP and 12 NADPH. 
B)  18 ATP and 18 NADPH. 
C)  12 ATP and 18 NADPH. 
D)  18 ATP and 12 NADPH. 
A)  12 ATP and 12 NADPH. 
B)  18 ATP and 18 NADPH. 
C)  12 ATP and 18 NADPH. 
D)  18 ATP and 12 NADPH.

After the formation of 3-phosphoglyceric acid, the reactions in the dark phase of photosynthesis are essentially the same as those in gluconeogenesis.

The enzyme ribulose 1,5-bisphosphate carboxylase

Which of the following is not a component of the electron transport chain that links Photosystem I and Photosystem II?

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 correctly describes a major difference between pheophytins and chlorophylls?

Rubisco is a rare example of an enzyme whose genetic information is found in two different cellular compartments.

A specialized pair of chlorophylls exists at

Which of the following is not true regarding the C₄ pathway?

Which of the following is true?

The fixation of CO₂ to form sugars requires the following:

Where does the actual CO₂ fixation process takes place?

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

In which part of the chloroplast does production of oxygen during photosynthesis primarily occur?

For the net synthesis of one six-carbon sugar from CO₂ in photosynthesis there is a requirement for

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

Exam 22: Photosynthesis

After the formation of 3-phosphoglyceric acid, the reactions in the dark phase of photosynthesis are essentially the same as those in gluconeogenesis.

The enzyme ribulose 1,5-bisphosphate carboxylase

Which of the following is not a component of the electron transport chain that links Photosystem I and Photosystem II?

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 correctly describes a major difference between pheophytins and chlorophylls?

Rubisco is a rare example of an enzyme whose genetic information is found in two different cellular compartments.

A specialized pair of chlorophylls exists at

Which of the following is not true regarding the C4 pathway?

Which of the following is true?

The fixation of CO2 to form sugars requires the following:

Where does the actual CO2 fixation process takes place?

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

In which part of the chloroplast does production of oxygen during photosynthesis primarily occur?

For the net synthesis of one six-carbon sugar from CO2 in photosynthesis there is a requirement for

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

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 is not true regarding the C₄ pathway?

The fixation of CO₂ to form sugars requires the following:

Where does the actual CO₂ fixation process takes place?

For the net synthesis of one six-carbon sugar from CO₂ in photosynthesis there is a requirement for