Question 1

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

Accepted Answer

2 H2O + 2

Question 2

How do herbicides such as diuron or atrazine work?

Accepted Answer

These inhibitors block electro

Question 3

How many protons are transferred into the thylakoid lumen after four photons have been absorbed by the photosystems?

Accepted Answer

A)  2 
B)  12 
C)  18 
D)  4 
E)  8 
A)  2 
B)  12 
C)  18 
D)  4 
E)  8

Question 4

Light absorption induces electron transfer from P680 to:

Accepted Answer

A)  pheophytin. 
B)  QH2. 
C)  cytochrome c. 
D)  chlorophyll 
E)  None of the above. 
A)  pheophytin. 
B)  QH2. 
C)  cytochrome c. 
D)  chlorophyll 
E)  None of the above.

Question 5

____________: This electron carrier of photosystem I is an iron-sulfur protein.

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 6

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

Accepted Answer

The answer of The light-induced electron transfer in photosynthesis results...

Question 7

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 8

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 9

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

Accepted Answer

cyclic pho

Question 10

How many chloroplasts does a typical plant cell have?

Accepted Answer

A)  1-100 
B)  200-500 
C)  > 1000 
D)  500-800 
E)  None of the above. 
A)  1-100 
B)  200-500 
C)  > 1000 
D)  500-800 
E)  None of the above.

Question 11

The transfer of excitation energy from one molecule to one nearby through electromagnetic interactions is called ________________.

Accepted Answer

resonance

Question 12

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 13

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 14

How is energy transferred from a photoreceptor molecule to photosystem II?

Accepted Answer

An electron in a photoreceptor

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

One of the accessory pigments in plants 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

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

Accepted Answer

Jagendorf exposed chloroplasts to low pH

Question 18

Why are chlorophylls good candidates for photoreceptors?

Accepted Answer

The conjugated network of sing

Question 19

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

Accepted Answer

CO2 + H2O

Question 20

Write the overall reaction of photosystem II.

Accepted Answer

2Q + 2H2O + light →

Exam 22: The Light Reactions

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

How do herbicides such as diuron or atrazine work?

How many protons are transferred into the thylakoid lumen after four photons have been absorbed by the photosystems?

Light absorption induces electron transfer from P680 to:

____________: This electron carrier of photosystem I is an iron-sulfur protein.

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

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

Another name for the CF1-CF0 complex is ____________.

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

How many chloroplasts does a typical plant cell have?

The transfer of excitation energy from one molecule to one nearby through electromagnetic interactions is called ________________.

Chlorophyll a contains a(n) ____________ ion in the center of the tetrapyrole.

Light absorbed by a chlorophyll a causes:

How is energy transferred from a photoreceptor molecule to photosystem II?

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

One of the accessory pigments in plants is ____________.

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

Why are chlorophylls good candidates for photoreceptors?

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

Write the overall reaction of 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

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