Question 1

Give the overall net equation as catalyzed by the Z scheme of photosynthesis.

Accepted Answer

2 H₂O + 2 NADP+ +10 H⁺ → O₂ + 2 NADPH + 12H⁺

Question 2

________________ is the receptor of excited electrons from P680.

Accepted Answer

pheophytin

Question 3

The light-induced electron transfer in photosynthesis results in the transfer of _______________ into the thylakoid space.

Accepted Answer

H⁺ or protons

Question 4

Choose the correct answer from the list below. Not all of the answers will be used.
-Chlorophyll a contains a(n) ____________ ion in the center of the tetrapyrole.

Accepted Answer

A) 960 nm 
B) magnesium 
C) ATP synthase 
D) chloroplasts 
E) thylakoids
F)copper
G)β-carotene
H)680 nm
I)FAD
J)chlorophyll a
K)ferredoxin b
L)resonance energy transfer 
A) 960 nm 
B) magnesium 
C) ATP synthase 
D) chloroplasts 
E) thylakoids
F)copper
G)β-carotene
H)680 nm
I)FAD
J)chlorophyll a
K)ferredoxin b
L)resonance energy transfer

Question 5

Describe the experiment by Jagendorf that helped confirm Mitchell's chemiosmotic hypothesis.

Accepted Answer

Jagendorf exposed chloroplasts to low pH

Question 6

Write out the reaction for photosynthetic production of carbohydrates and oxygen.

Accepted Answer

CO2 + H2O

Question 7

Complete the following reaction for photosystem I: Pc(Cu+) + Fdox + light →

Accepted Answer

A)  Pc(Cu+) + Fdox + light → Pc (Cu+) + (Cu+) Fdred 
B)  Pc(Cu+) + Fdox + light → Pc (Cu2+) + Fdred 
C)  Pc(Cu+) + Fdox + light → Pc + Fdred(Cu2+) 
D)  Pc(Cu+) + Fdox + light → Pc- (Cu3+) + Fdred 
E)  None of the above. 
A)  Pc(Cu+) + Fdox + light → Pc (Cu+) + (Cu+) Fdred 
B)  Pc(Cu+) + Fdox + light → Pc (Cu2+) + Fdred 
C)  Pc(Cu+) + Fdox + light → Pc + Fdred(Cu2+) 
D)  Pc(Cu+) + Fdox + light → Pc- (Cu3+) + Fdred 
E)  None of the above.

Question 8

Describe the path of electrons in photosystem I.

Accepted Answer

The electrons transfer from P7

Question 9

Write the overall reaction of photosystem II.

Accepted Answer

2Q + 2H2O + light →

Question 10

Humans do not produce energy by photosynthesis. Why, then, is this process critical to our survival?

Accepted Answer

The products of phot

Question 11

The pathway of electron flow from H2O to NADP+ in photosynthesis is referred to as:

Accepted Answer

A)  cooperative special pairs. 
B)  photorespiration. 
C)  the Z scheme of photosynthesis. 
D)  photophosphorylation. 
E)  None of the above. 
A)  cooperative special pairs. 
B)  photorespiration. 
C)  the Z scheme of photosynthesis. 
D)  photophosphorylation. 
E)  None of the above.

Question 12

Which of the following is/are light harvesting molecules?

Accepted Answer

A)  vitamin D 
B)  carotenoids 
C)  chlorophyll b 
D)  plastocyanin 
E)  B and C 
A)  vitamin D 
B)  carotenoids 
C)  chlorophyll b 
D)  plastocyanin 
E)  B and C

Question 13

The manganese center of photosystem II converts ________________ to ________________.

Accepted Answer

The answer of The manganese center of photosystem II converts...

Question 14

Choose the correct answer from the list below. Not all of the answers will be used.
-Photosynthesis takes place in ____________.

Accepted Answer

A) 960 nm 
B) magnesium 
C) ATP synthase 
D) chloroplasts 
E) thylakoids
F)copper
G)β-carotene
H)680 nm
I)FAD
J)chlorophyll a
K)ferredoxin b
L)resonance energy transfer 
A) 960 nm 
B) magnesium 
C) ATP synthase 
D) chloroplasts 
E) thylakoids
F)copper
G)β-carotene
H)680 nm
I)FAD
J)chlorophyll a
K)ferredoxin b
L)resonance energy transfer

Question 15

In the overall stoichiometry of the light reactions, eight photons of light generate:

Accepted Answer

A)  four NADPH. 
B)  four NADH. 
C)  three ATP. 
D)  B and C. 
E)  A, B, and C. 
A)  four NADPH. 
B)  four NADH. 
C)  three ATP. 
D)  B and C. 
E)  A, B, and C.

Question 16

Choose the correct answer from the list below. Not all of the answers will be used.
-Another name for the CF1-CF0 complex is ____________.

Accepted Answer

A) 960 nm 
B) magnesium 
C) ATP synthase 
D) chloroplasts 
E) thylakoids
F)copper
G)β-carotene
H)680 nm
I)FAD
J)chlorophyll a
K)ferredoxin b
L)resonance energy transfer 
A) 960 nm 
B) magnesium 
C) ATP synthase 
D) chloroplasts 
E) thylakoids
F)copper
G)β-carotene
H)680 nm
I)FAD
J)chlorophyll a
K)ferredoxin b
L)resonance energy transfer

Question 17

In ________________, ATP is generated without the concomitant formation of NADPH.

Accepted Answer

cyclic pho

Question 18

Choose the correct answer from the list below. Not all of the answers will be used.
-Photosystem II responds to wavelengths shorter than ____________.

Accepted Answer

A) 960 nm 
B) magnesium 
C) ATP synthase 
D) chloroplasts 
E) thylakoids
F)copper
G)β-carotene
H)680 nm
I)FAD
J)chlorophyll a
K)ferredoxin b
L)resonance energy transfer 
A) 960 nm 
B) magnesium 
C) ATP synthase 
D) chloroplasts 
E) thylakoids
F)copper
G)β-carotene
H)680 nm
I)FAD
J)chlorophyll a
K)ferredoxin b
L)resonance energy transfer

Question 19

Light absorbed by a chlorophyll a causes:

Accepted Answer

A)  an electron to move from the photon to the chlorophyll. 
B)  an electron to move from a ground state to an excited state. 
C)  an electron to move to a neighboring water molecule. 
D)  an electron to move from chlorophyll to ADP. 
E)  None of the above. 
A)  an electron to move from the photon to the chlorophyll. 
B)  an electron to move from a ground state to an excited state. 
C)  an electron to move to a neighboring water molecule. 
D)  an electron to move from chlorophyll to ADP. 
E)  None of the above.

Question 20

What is the original source of electrons used to neutralize the special pair in photosystem II?

Accepted Answer

A)  reduced cytochrome bf 
B)  NADH 
C)  H2O 
D)  membrane lipids 
E)  ferredoxin 
A)  reduced cytochrome bf 
B)  NADH 
C)  H2O 
D)  membrane lipids 
E)  ferredoxin

Exam 22: The Light Reactions

Give the overall net equation as catalyzed by the Z scheme of photosynthesis.

________________ is the receptor of excited electrons from P680.

The light-induced electron transfer in photosynthesis results in the transfer of _______________ into the thylakoid space.

Choose the correct answer from the list below. Not all of the answers will be used. -Chlorophyll a contains a(n) ____________ ion in the center of the tetrapyrole.

Describe the experiment by Jagendorf that helped confirm Mitchell's chemiosmotic hypothesis.

Write out the reaction for photosynthetic production of carbohydrates and oxygen.

Complete the following reaction for photosystem I: Pc(Cu+) + Fdox + light →

Describe the path of electrons in photosystem I.

Write the overall reaction of photosystem II.

Humans do not produce energy by photosynthesis. Why, then, is this process critical to our survival?

The pathway of electron flow from H2O to NADP+ in photosynthesis is referred to as:

Which of the following is/are light harvesting molecules?

The manganese center of photosystem II converts ________________ to ________________.

Choose the correct answer from the list below. Not all of the answers will be used. -Photosynthesis takes place in ____________.

In the overall stoichiometry of the light reactions, eight photons of light generate:

Choose the correct answer from the list below. Not all of the answers will be used. -Another name for the CF1-CF0 complex is ____________.

In ________________, ATP is generated without the concomitant formation of NADPH.

Choose the correct answer from the list below. Not all of the answers will be used. -Photosystem II responds to wavelengths shorter than ____________.

Light absorbed by a chlorophyll a causes:

What is the original source of electrons used to neutralize the special pair in photosystem II?

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 Calvin Cycle

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

Complete the following reaction for photosystem I: Pc(Cu⁺) + Fd_ox + light →

The pathway of electron flow from H₂O to NADP⁺ in photosynthesis is referred to as:

The manganese center of photosystem II converts to .