Question 1

The plastids that give flowers and fruits their distinctive colors are

Accepted Answer

A) chloroplasts. 
B) elaioplasts. 
C) amyloplasts. 
D) chromoplasts. 
E) proteinoplasts. 
A) chloroplasts. 
B) elaioplasts. 
C) amyloplasts. 
D) chromoplasts. 
E) proteinoplasts.

Question 2

Bacteriochlorophyll differs from chlorophyll a and b in structure and function.Which of the following statements correctly contrasts these types of chlorophyll?

Accepted Answer

A) Bacteriochlorophyll has a heme ring,but chlorophyll a and b each have a porphyrin ring. 
B) Chlorophyll a and b each have a phytol side chain,which is missing from bacteriochlorophyll. 
C) Chlorophyll a has a methyl group attached to the porphyrin ring,but bacteriochlorophyll has a formyl group. 
D) Bacteriochlorophyll has a saturated carbon-carbon bond at one location in the porphyrin ring that is not saturated in chlorophyll a and b. 
E) Chlorophyll a and b porphyrin rings bind Mg2+,but the bacteriochlorophyll ring binds Fe3+. 
A) Bacteriochlorophyll has a heme ring,but chlorophyll a and b each have a porphyrin ring. 
B) Chlorophyll a and b each have a phytol side chain,which is missing from bacteriochlorophyll. 
C) Chlorophyll a has a methyl group attached to the porphyrin ring,but bacteriochlorophyll has a formyl group. 
D) Bacteriochlorophyll has a saturated carbon-carbon bond at one location in the porphyrin ring that is not saturated in chlorophyll a and b. 
E) Chlorophyll a and b porphyrin rings bind Mg2+,but the bacteriochlorophyll ring binds Fe3+.

Question 3

Each of the following directly regulates the Calvin cycle activity to ensure maximum efficiency except

Accepted Answer

A) stromal pH. 
B) Mg2+ concentration. 
C) chlorophyll photon absorption. 
D) NADPH concentration. 
E) ATP concentration. 
A) stromal pH. 
B) Mg2+ concentration. 
C) chlorophyll photon absorption. 
D) NADPH concentration. 
E) ATP concentration.

Question 4

Each of the following is part of the energy transduction from solar energy to chemical energy except

Accepted Answer

A) light absorption by chlorophyll. 
B) electron flow through an electron transport system. 
C) unidirectional proton pumping across a membrane. 
D) an electrochemical proton gradient. 
E) All are involved in the energy transduction. 
A) light absorption by chlorophyll. 
B) electron flow through an electron transport system. 
C) unidirectional proton pumping across a membrane. 
D) an electrochemical proton gradient. 
E) All are involved in the energy transduction.

Question 5

The Calvin cycle occurs in the chloroplast

Accepted Answer

A) stroma. 
B) grana. 
C) thylakoid lumen. 
D) thylakoid membrane. 
E) outer membrane. 
A) stroma. 
B) grana. 
C) thylakoid lumen. 
D) thylakoid membrane. 
E) outer membrane.

Question 6

3-phosphoglycerate is to C3 plants as ________ is to C4 plants.

Accepted Answer

Question 7

Plastocyanin (PC)

Accepted Answer

A) is a mobile electron carrier. 
B) is functionally similar to plastoquinol. 
C) carries only one electron at a time. 
D) carries electrons to PSI. 
E) All of the above are true of PC. 
A) is a mobile electron carrier. 
B) is functionally similar to plastoquinol. 
C) carries only one electron at a time. 
D) carries electrons to PSI. 
E) All of the above are true of PC.

Question 8

Each of the following compounds is a source of electrons for anoxygenic photosynthesis except

Accepted Answer

A) S2- (sulfide). 
B) S2O32- (thiosulfate). 
C) H2O (water). 
D) succinate. 
E) All of the above are sources of electrons for anoxygenic photosynthesis. 
A) S2- (sulfide). 
B) S2O32- (thiosulfate). 
C) H2O (water). 
D) succinate. 
E) All of the above are sources of electrons for anoxygenic photosynthesis.

Question 9

Each of the following is an essential feature of electron transfer from water to NADP+ except

Accepted Answer

A) PSII. 
B) PSI. 
C) coenzyme Q. 
D) plastocyanin (P
C) . 
E) cytochrome b6/f complex. 
A) PSII. 
B) PSI. 
C) coenzyme Q. 
D) plastocyanin (P
C) . 
E) cytochrome b6/f complex.

Question 10

Which of the following statements correctly describes cyclic electron flow pathways?

Accepted Answer

A) Water molecules are split. 
B) Both PSI and PSII are required. 
C) Proton gradients are never formed. 
D) No exogenous electron source is required. 
E) O2 is released. 
A) Water molecules are split. 
B) Both PSI and PSII are required. 
C) Proton gradients are never formed. 
D) No exogenous electron source is required. 
E) O2 is released.

Question 11

C3 and C4 plants get their classification from the number of carbons in the first detectable product of carbon dioxide fixation.The C3 product is ________,whereas the C4 product is ________.

Accepted Answer

A) glycerol; malate 
B) triose phosphate; oxaloacetate 
C) 3-phosphoglycerate; malate 
D) ribose; phosphoenolpyruvate 
E) 3-phosphoglycerate; oxaloacetate 
A) glycerol; malate 
B) triose phosphate; oxaloacetate 
C) 3-phosphoglycerate; malate 
D) ribose; phosphoenolpyruvate 
E) 3-phosphoglycerate; oxaloacetate

Question 12

Most reactions involving NADP+ are ________ reactions,whereas most reactions involving NAD+ are ________ reactions.

Accepted Answer

A) anabolic; catabolic 
B) catabolic; anabolic 
C) metabolic; anabolic 
D) anabolic; both catabolic and anabolic 
E) both catabolic and anabolic; catabolic 
A) anabolic; catabolic 
B) catabolic; anabolic 
C) metabolic; anabolic 
D) anabolic; both catabolic and anabolic 
E) both catabolic and anabolic; catabolic

Question 13

Carbon dioxide generally enters a plant through pores called

Accepted Answer

A) mesophylls. 
B) stomata. 
C) cuticles. 
D) connexons. 
E) bacteriochlorophylls. 
A) mesophylls. 
B) stomata. 
C) cuticles. 
D) connexons. 
E) bacteriochlorophylls.

Question 14

When energy captured by antenna pigments of LHCII is funneled to the reaction center it changes the reduction potential of a P680 chlorophyll a molecule to ________,making it a better electron ________.

Accepted Answer

A) −0.80 V; donor 
B) −0.80 V; acceptor 
C) +0.80 V; donor 
D) +0.80 V; acceptor 
E) None of the above are correct. 
A) −0.80 V; donor 
B) −0.80 V; acceptor 
C) +0.80 V; donor 
D) +0.80 V; acceptor 
E) None of the above are correct.

Question 15

The Calvin cycle in C3 plants occurs in ________ cells,whereas the Calvin cycle in C4 plants occurs in the ________.

Accepted Answer

mesophyll;

Question 16

In the Calvin cycle,the enzyme that catalyzes the capture of carbon dioxide and the formation of 3-phosphoglycerate is

Accepted Answer

A) phosphoglycerokinase. 
B) ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco). 
C) triose phosphate isomerase. 
D) ferredoxin-NADP+ reductase. 
E) glyceraldehyde-3-phosphate dehydrogenase. 
A) phosphoglycerokinase. 
B) ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco). 
C) triose phosphate isomerase. 
D) ferredoxin-NADP+ reductase. 
E) glyceraldehyde-3-phosphate dehydrogenase.

Question 17

Which of the following is the site of photosynthesis in cyanobacteria?

Accepted Answer

A) peroxisomes 
B) mitochondria 
C) photosynthetic membranes 
D) outer walls 
E) thylakoid lumens 
A) peroxisomes 
B) mitochondria 
C) photosynthetic membranes 
D) outer walls 
E) thylakoid lumens

Question 18

Biosynthesis of sucrose occurs in the

Accepted Answer

A) cytosol. 
B) stroma. 
C) thylakoid lumen. 
D) chloroplast intermembrane space. 
E) vacuole. 
A) cytosol. 
B) stroma. 
C) thylakoid lumen. 
D) chloroplast intermembrane space. 
E) vacuole.

Exam 11: Phototrophic Energy Metabolism: Photosynthesis

The plastids that give flowers and fruits their distinctive colors are

Bacteriochlorophyll differs from chlorophyll a and b in structure and function.Which of the following statements correctly contrasts these types of chlorophyll?

Each of the following directly regulates the Calvin cycle activity to ensure maximum efficiency except

Each of the following is part of the energy transduction from solar energy to chemical energy except

The Calvin cycle occurs in the chloroplast

3-phosphoglycerate is to C3 plants as ________ is to C4 plants.

Plastocyanin (PC)

Each of the following compounds is a source of electrons for anoxygenic photosynthesis except

Each of the following is an essential feature of electron transfer from water to NADP+ except

Which of the following statements correctly describes cyclic electron flow pathways?

C3 and C4 plants get their classification from the number of carbons in the first detectable product of carbon dioxide fixation.The C3 product is ________,whereas the C4 product is ________.

Most reactions involving NADP+ are ________ reactions,whereas most reactions involving NAD+ are ________ reactions.

Carbon dioxide generally enters a plant through pores called

When energy captured by antenna pigments of LHCII is funneled to the reaction center it changes the reduction potential of a P680 chlorophyll a molecule to ________,making it a better electron ________.

The Calvin cycle in C3 plants occurs in ________ cells,whereas the Calvin cycle in C4 plants occurs in the ________.

In the Calvin cycle,the enzyme that catalyzes the capture of carbon dioxide and the formation of 3-phosphoglycerate is

Which of the following is the site of photosynthesis in cyanobacteria?

Biosynthesis of sucrose occurs in the

A Preview of Cell Biology

The Chemistry of the Cell

The Macromolecules of the Cell

Cells and Organelles

Bioenergetics: the Flow of Energy in the Cell

Enzymes: the Catalysts of Life

Membranes: Their Structure,function,and Chemistry

Transport Across Membranes: Overcoming the Permeability Barrier

Chemotrophic Energy Metabolism: Glycolysis and Fermentation

Chemotrophic Energy Metabolism: Aerobic Respiration

The Endomembrane System

Cytoskeletal Systems

Cellular Movement: Motility and Contractility

Beyond the Cell: Cell Adhesions, cell Junctions, and Extracellular Structures

The Structural Basis of Cellular Information: Dna, chromosomes, and the Nucleus

DNA Replication, repair, and Recombination

Gene Expression: Ithe Genetic Code and Transcription

Gene Expression: Iiprotein Synthesis and Sorting

The Regulation of Gene Expression

Molecular Biology Techniques for Cell Biology

Signal Transduction Mechanisms: Ielectrical and Synaptic Signaling in Neurons

Signal Transduction Mechanisms: Iimessengers and Receptors

The Cell Cycle and Mitosis

Sexual Reproduction,meiosis,and Genetic Recombination

Filters

3-phosphoglycerate is to C₃ plants as ________ is to C₄ plants.

Each of the following is an essential feature of electron transfer from water to NADP⁺ except

C₃ and C₄plants get their classification from the number of carbons in the first detectable product of carbon dioxide fixation.The C₃product is ,whereas the C₄ product is .

Most reactions involving NADP⁺ are reactions,whereas most reactions involving NAD⁺ are reactions.

When energy captured by antenna pigments of LHCII is funneled to the reaction center it changes the reduction potential of a P680 chlorophyll a molecule to ,making it a better electron .

The Calvin cycle in C₃ plants occurs in cells,whereas the Calvin cycle in C₄ plants occurs in the .