Question 1

Which is not a name for the reactions of the Calvin cycle?

Accepted Answer

A) Proton translocation cycle. 
B) Reductive pentose phosphate cycle. 
C) C₃ pathway. 
D) Dark reactions. 
A) Proton translocation cycle. 
B) Reductive pentose phosphate cycle. 
C) C₃ pathway. 
D) Dark reactions.

Question 2

Rubisco has an active form during the day and an inactive form at night.

Accepted Answer

A) True 
 B)False

Question 3

Which is not an intermediate in the biosynthesis of sucrose in plants?

Accepted Answer

A) ADP-glucose. 
B) Glucose 6-phosphate. 
C) Fructose 6-phosphate. 
D) Fructose 1,6-bisphosphate. 
A) ADP-glucose. 
B) Glucose 6-phosphate. 
C) Fructose 6-phosphate. 
D) Fructose 1,6-bisphosphate.

Question 4

Within the chloroplast,grana are ________.

Accepted Answer

A) stacks of enfolded thylakoid membrane 
B) the stroma 
C) stroma lamellae 
D) the site of carbon fixation reactions 
A) stacks of enfolded thylakoid membrane 
B) the stroma 
C) stroma lamellae 
D) the site of carbon fixation reactions

Question 5

The initial carbon dioxide acceptor of the C₄ pathway is ________.

Accepted Answer

A) phosphoenolpyruvate 
B) oxaloacetate 
C) ribulose 1,5-bisphosphate 
D) PEP carboxylase 
A) phosphoenolpyruvate 
B) oxaloacetate 
C) ribulose 1,5-bisphosphate 
D) PEP carboxylase

Question 6

The only plant pigments responsible for light harvesting are chlorophylls.

Accepted Answer

A) True 
 B)False

Question 7

Chlorophyll molecules can exist in ________ different states.

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
A) 2 
B) 3 
C) 4 
D) 5

Question 8

On a hot summer day which would you expect about the ratio of oxygenation versus carboxylation of ribulose 1,5-bisphosphate in C₃ plants as compared to a cooler day?

Accepted Answer

A) No change because oxygenation does not occur in C₃ plants. 
B) The ratio is not affected by temperature. 
C) The ratio rises due to increased rate of oxygenation. 
D) The ratio decreases due to decreased rate of oxygenation. 
A) No change because oxygenation does not occur in C₃ plants. 
B) The ratio is not affected by temperature. 
C) The ratio rises due to increased rate of oxygenation. 
D) The ratio decreases due to decreased rate of oxygenation.

Question 9

All chlorophyll are directly involved in electron transfer.

Accepted Answer

A) True 
 B)False

Question 10

Which use only type I reaction centers for photosynthesis?

Accepted Answer

A) Heliobacteria. 
B) Purple bacteria. 
C) Cyanobacteria. 
D) Algae. 
A) Heliobacteria. 
B) Purple bacteria. 
C) Cyanobacteria. 
D) Algae.

Question 11

Photon capture by plant chloroplasts is more efficient than in bacteria because they contain

Accepted Answer

A) both PS I and PS II. 
B) more chlorophyll. 
C) LHII,a light harvesting complex. 
D) both cyclic and noncyclic photophosphorylation. 
A) both PS I and PS II. 
B) more chlorophyll. 
C) LHII,a light harvesting complex. 
D) both cyclic and noncyclic photophosphorylation.

Question 12

What is wavelength of light if the energy of one photon is 2.925 × 10-¹⁹ J?(h = 6.63 × 10-³⁴ J s and c = 3.00 × 10⁸ m s-¹)

Accepted Answer

A) 680nm 
B) 700 nm 
C) 5.8 m 
D) 1.5 × 10-³ nm 
A) 680nm 
B) 700 nm 
C) 5.8 m 
D) 1.5 × 10-³ nm

Question 13

The compound 2-carboxyarabinitol 1-phosphate is present in plants only at night and is a strong activator of rubisco.

Accepted Answer

A) True 
 B)False

Question 14

Which term is not used for a photosystem or a part of a photosystem?

Accepted Answer

A) PS I. 
B) PS II. 
C) Special pair. 
D) Light complexes. 
E) Antenna pigments. 
A) PS I. 
B) PS II. 
C) Special pair. 
D) Light complexes. 
E) Antenna pigments.

Question 15

Phycoerythrin and β-carotene absorb light in ranges broader than that absorbed by chlorophylls,and this light energy is ultimately used by the plant for photosynthesis.

Accepted Answer

A) True 
 B)False

Question 16

The production of O2 from water supplies an electron first for

Accepted Answer

A) photosystem I. 
B) photosystem II. 
C) cytochrome bf complex. 
D) plastocyanin. 
A) photosystem I. 
B) photosystem II. 
C) cytochrome bf complex. 
D) plastocyanin.

Question 17

Photosynthesis by green sulfur bacteria and cyanobacteria are different because green sulfur bacteria ________.

Accepted Answer

A) have only cyclic photosynthesis 
B) use photosystem I,but not photosystem II 
C) use both photosystems I and II 
D) use cytochromes 
A) have only cyclic photosynthesis 
B) use photosystem I,but not photosystem II 
C) use both photosystems I and II 
D) use cytochromes

Question 18

Light with a wavelength of 700 nm has more energy per photon than light with a wavelength of 680 nm.

Accepted Answer

A) True 
 B)False

Question 19

Which is the proper order of substrates in the synthesis of starch?

Accepted Answer

A) Glucose 1-phosphate → glucose 6-phosphate → ADP-glucose → starch. 
B) Glucose 1-phosphate → fructose 6-phosphate → UDP-fructose → starch. 
C) Glucose 3-phosphate → glucose 1-phosphate → ADP-glucose → starch. 
D) Glucose 6-phosphate → glucose 1-phosphate → ADP-glucose → starch. 
A) Glucose 1-phosphate → glucose 6-phosphate → ADP-glucose → starch. 
B) Glucose 1-phosphate → fructose 6-phosphate → UDP-fructose → starch. 
C) Glucose 3-phosphate → glucose 1-phosphate → ADP-glucose → starch. 
D) Glucose 6-phosphate → glucose 1-phosphate → ADP-glucose → starch.

Question 20

The main difference between photosynthesis and respiratory electron transport is (are)

Accepted Answer

A) the tetrapyrole ring of the pigments involved. 
B) the coenzymes that carry electrons. 
C) the sources of excited electrons. 
D) the formation of ATP. 
A) the tetrapyrole ring of the pigments involved. 
B) the coenzymes that carry electrons. 
C) the sources of excited electrons. 
D) the formation of ATP.

Exam 15: Photosynthesis

Which is not a name for the reactions of the Calvin cycle?

Rubisco has an active form during the day and an inactive form at night.

Which is not an intermediate in the biosynthesis of sucrose in plants?

Within the chloroplast,grana are ________.

The initial carbon dioxide acceptor of the C₄ pathway is ________.

The only plant pigments responsible for light harvesting are chlorophylls.

Chlorophyll molecules can exist in ________ different states.

On a hot summer day which would you expect about the ratio of oxygenation versus carboxylation of ribulose 1,5-bisphosphate in C₃ plants as compared to a cooler day?

All chlorophyll are directly involved in electron transfer.

Which use only type I reaction centers for photosynthesis?

Photon capture by plant chloroplasts is more efficient than in bacteria because they contain

What is wavelength of light if the energy of one photon is 2.925 × 10-¹⁹ J?(h = 6.63 × 10-³⁴ J s and c = 3.00 × 10⁸ m s-¹)

The compound 2-carboxyarabinitol 1-phosphate is present in plants only at night and is a strong activator of rubisco.

Which term is not used for a photosystem or a part of a photosystem?

Phycoerythrin and β-carotene absorb light in ranges broader than that absorbed by chlorophylls,and this light energy is ultimately used by the plant for photosynthesis.

The production of O2 from water supplies an electron first for

Photosynthesis by green sulfur bacteria and cyanobacteria are different because green sulfur bacteria ________.

Light with a wavelength of 700 nm has more energy per photon than light with a wavelength of 680 nm.

Which is the proper order of substrates in the synthesis of starch?

The main difference between photosynthesis and respiratory electron transport is (are)

Introduction to Biochemistry

Water

Amino Acids and the Primary Structures of Proteins

Proteins: Three-Dimensional Structure and Function

Properties of Enzymes

Mechanisms of Enzymes

Coenzymes and Vitamins

Carbohydrates

Lipids and Membranes

Introduction to Metabolism

Glycolysis

Gluconeogenesis, the Pentose Phosphate Pathway, and Glycogen Metabolism

The Citric Acid Cycle

Electron Transport and Atp Synthesis

Lipid Metabolism

Amino Acid Metabolism

Nucleotide Metabolism

Nucleic Acids

DNA Replication, repair, and Recombination

Transcription and RNA Processing

Protein Synthesis

Filters

The production of O₂ from water supplies an electron first for