Question 1

Figure 10.1  
-What is the relationship between wavelength of light and the quantity of energy per photon?

Accepted Answer

A) They have a direct, linear relationship. 
B) They are inversely related. 
C) They are logarithmically related. 
D) They are separate phenomena. 
E) They are only related in certain parts of the spectrum. 
A) They have a direct, linear relationship. 
B) They are inversely related. 
C) They are logarithmically related. 
D) They are separate phenomena. 
E) They are only related in certain parts of the spectrum. B

Question 2

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.
-Produces three-carbon sugars

Accepted Answer

A) light reactions alone 
B) the Calvin cycle alone 
C) both the light reactions and the Calvin cycle 
D) neither the light reactions nor the Calvin cycle 
E) occurs in the chloroplast but is not part of photosynthesis 
A) light reactions alone 
B) the Calvin cycle alone 
C) both the light reactions and the Calvin cycle 
D) neither the light reactions nor the Calvin cycle 
E) occurs in the chloroplast but is not part of photosynthesis B

Question 3

Figure 10.1  
-Which of the following statements best represents the relationships between the light reactions and the Calvin cycle?

Accepted Answer

A) The light reactions provide ATP and NADPH to the Calvin cycle, and the cycle returns ADP, Pi, and NADP⁺ to the light reactions. 
B) The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the cycle provides water and electrons to the light reactions. 
C) The light reactions supply the Calvin cycle with CO₂ to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP. 
D) The light reactions provide the Calvin cycle with oxygen for electron flow, and the Calvin cycle provides the light reactions with water to split. 
E) There is no relationship between the light reactions and the Calvin cycle. 
A) The light reactions provide ATP and NADPH to the Calvin cycle, and the cycle returns ADP, Pi, and NADP⁺ to the light reactions. 
B) The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the cycle provides water and electrons to the light reactions. 
C) The light reactions supply the Calvin cycle with CO₂ to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP. 
D) The light reactions provide the Calvin cycle with oxygen for electron flow, and the Calvin cycle provides the light reactions with water to split. 
E) There is no relationship between the light reactions and the Calvin cycle. A

Question 4

Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle?

Accepted Answer

A) CO₂ and glucose 
B) H₂O and O₂ 
C) ADP, Pi, and NADP⁺ 
D) electrons and H⁺ 
E) ATP and NADPH 
A) CO₂ and glucose 
B) H₂O and O₂ 
C) ADP, Pi, and NADP⁺ 
D) electrons and H⁺ 
E) ATP and NADPH

Question 5

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.
-Produces molecular oxygen (O₂)

Accepted Answer

A) light reactions alone 
B) the Calvin cycle alone 
C) both the light reactions and the Calvin cycle 
D) neither the light reactions nor the Calvin cycle 
E) occurs in the chloroplast but is not part of photosynthesis 
A) light reactions alone 
B) the Calvin cycle alone 
C) both the light reactions and the Calvin cycle 
D) neither the light reactions nor the Calvin cycle 
E) occurs in the chloroplast but is not part of photosynthesis

Question 6

Figure 10.1  
-Which of the events listed below occur in the light reactions of photosynthesis?

Accepted Answer

A) NADP is produced. 
B) NADPᴴ is reduced to NADP⁺. 
C) carbon dioxide is incorporated into PGA. 
D) ATP is phosphorylated to yield ADP. 
E) light is absorbed and funneled to reaction-center chlorophyll a. 
A) NADP is produced. 
B) NADPᴴ is reduced to NADP⁺. 
C) carbon dioxide is incorporated into PGA. 
D) ATP is phosphorylated to yield ADP. 
E) light is absorbed and funneled to reaction-center chlorophyll a.

Question 7

Figure 10.1  
-The splitting of carbon dioxide to form oxygen gas and carbon compounds occurs during

Accepted Answer

A) photosynthesis. 
B) respiration. 
C) both photosynthesis and respiration. 
D) neither photosynthesis nor respiration. 
E) photorespiration. 
A) photosynthesis. 
B) respiration. 
C) both photosynthesis and respiration. 
D) neither photosynthesis nor respiration. 
E) photorespiration.

Question 8

Figure 10.3  
-Which of the following sequences correctly represents the flow of electrons during photosynthesis?

Accepted Answer

A) NADPH → O₂ → CO₂ 
B) H₂O → NADPH → Calvin cycle 
C) NADPH → chlorophyll → Calvin cycle 
D) H₂O → photosystem I → photosystem II 
E) NADPH → electron transport chain → O₂ 
A) NADPH → O₂ → CO₂ 
B) H₂O → NADPH → Calvin cycle 
C) NADPH → chlorophyll → Calvin cycle 
D) H₂O → photosystem I → photosystem II 
E) NADPH → electron transport chain → O₂

Question 9

Figure 10.1  
-In the thylakoid membranes, what is the main role of the antenna pigment molecules?

Accepted Answer

A) split water and release oxygen to the reaction-center chlorophyll 
B) harvest photons and transfer light energy to the reaction-center chlorophyll 
C) synthesize ATP from ADP and Pi 
D) transfer electrons to ferredoxin and then NADPH 
E) concentrate photons within the stroma 
A) split water and release oxygen to the reaction-center chlorophyll 
B) harvest photons and transfer light energy to the reaction-center chlorophyll 
C) synthesize ATP from ADP and Pi 
D) transfer electrons to ferredoxin and then NADPH 
E) concentrate photons within the stroma

Question 10

Figure 10.1  
-As a research scientist, you measure the amount of ATP and NADPH consumed by the Calvin cycle in 1 hour. You find 30,000 molecules of ATP consumed, but only 20,000 molecules of NADPH. Where did the extra ATP molecules come from?

Accepted Answer

A) photosystem II 
B) photosystem I 
C) cyclic electron flow 
D) linear electron flow 
E) chlorophyll 
A) photosystem II 
B) photosystem I 
C) cyclic electron flow 
D) linear electron flow 
E) chlorophyll

Question 11

In any ecosystem, terrestrial or aquatic, what group(s)is (are)always necessary?

Accepted Answer

A) autotrophs and heterotrophs 
B) producers and primary consumers 
C) photosynthesizers 
D) autotrophs 
E) green plants 
A) autotrophs and heterotrophs 
B) producers and primary consumers 
C) photosynthesizers 
D) autotrophs 
E) green plants

Question 12

Figure 10.2 Use the following figure and the stages labeled A, B, C, D, and E to answer the following questions.
  
-If ATP used by this plant is labeled with radioactive phosphorus, in which molecules will the radioactivity be measurable after one "turn" of the cycle?

Accepted Answer

A) in B only 
B) in B and C only 
C) in B, C, and D only 
D) in B and E only 
E) in B, C, D, and E 
A) in B only 
B) in B and C only 
C) in B, C, and D only 
D) in B and E only 
E) in B, C, D, and E

Question 13

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.
-Requires glucose

Accepted Answer

A) light reactions alone 
B) the Calvin cycle alone 
C) both the light reactions and the Calvin cycle 
D) neither the light reactions nor the Calvin cycle 
E) occurs in the chloroplast but is not part of photosynthesis 
A) light reactions alone 
B) the Calvin cycle alone 
C) both the light reactions and the Calvin cycle 
D) neither the light reactions nor the Calvin cycle 
E) occurs in the chloroplast but is not part of photosynthesis

Question 14

Figure 10.1  
-Figure 10.1 shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?

Accepted Answer

A) Green and yellow wavelengths inhibit the absorption of red and blue wavelengths. 
B) Bright sunlight destroys photosynthetic pigments. 
C) Oxygen given off during photosynthesis interferes with the absorption of light. 
D) Other pigments absorb light in addition to chlorophyll a. 
E) Aerobic bacteria take up oxygen which changes the measurement of the rate of photosynthesis. 
A) Green and yellow wavelengths inhibit the absorption of red and blue wavelengths. 
B) Bright sunlight destroys photosynthetic pigments. 
C) Oxygen given off during photosynthesis interferes with the absorption of light. 
D) Other pigments absorb light in addition to chlorophyll a. 
E) Aerobic bacteria take up oxygen which changes the measurement of the rate of photosynthesis.

Question 15

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.
-Requires ATP

Accepted Answer

A) light reactions alone 
B) the Calvin cycle alone 
C) both the light reactions and the Calvin cycle 
D) neither the light reactions nor the Calvin cycle 
E) occurs in the chloroplast but is not part of photosynthesis 
A) light reactions alone 
B) the Calvin cycle alone 
C) both the light reactions and the Calvin cycle 
D) neither the light reactions nor the Calvin cycle 
E) occurs in the chloroplast but is not part of photosynthesis

Question 16

Figure 10.3  
-Which of the following statements is True concerning Figure 10.3?

Accepted Answer

A) It represents cell processes involved in C₄ photosynthesis. 
B) It represents the type of cell structures found in CAM plants. 
C) It represents an adaptation that maximizes photorespiration. 
D) It represents a C₃ photosynthetic system. 
E) It represents a relationship between plant cells that photosynthesize and those that cannot. 
A) It represents cell processes involved in C₄ photosynthesis. 
B) It represents the type of cell structures found in CAM plants. 
C) It represents an adaptation that maximizes photorespiration. 
D) It represents a C₃ photosynthetic system. 
E) It represents a relationship between plant cells that photosynthesize and those that cannot.

Question 17

Figure 10.2 Use the following figure and the stages labeled A, B, C, D, and E to answer the following questions.
  
-In metabolic processes of cell respiration and photosynthesis, prosthetic groups such as heme and iron-sulfur complexes are encountered. What do they do?

Accepted Answer

A) donate electrons 
B) act as reducing agents 
C) act as oxidizing agents 
D) transport protons within the mitochondria and chloroplasts 
E) both oxidize and reduce during electron transport 
A) donate electrons 
B) act as reducing agents 
C) act as oxidizing agents 
D) transport protons within the mitochondria and chloroplasts 
E) both oxidize and reduce during electron transport

Question 18

Figure 10.1  
-What does the chemiosmotic process in chloroplasts involve?

Accepted Answer

A) establishment of a proton gradient 
B) diffusion of electrons through the thylakoid membrane 
C) reduction of water to produce ATP energy 
D) movement of water by osmosis into the thylakoid space from the stroma 
E) formation of glucose, using carbon dioxide, NADPH, and ATP 
A) establishment of a proton gradient 
B) diffusion of electrons through the thylakoid membrane 
C) reduction of water to produce ATP energy 
D) movement of water by osmosis into the thylakoid space from the stroma 
E) formation of glucose, using carbon dioxide, NADPH, and ATP

Question 19

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants.
-The sugar that results from three "turns" of the Calvin cycle is glyceraldehyde-3-phosphate (G3P). Which of the following is a consequence of this?

Accepted Answer

A) Formation of a molecule of glucose would require 9 "turns." 
B) G3P more readily forms sucrose and other disaccharides than it does monosaccharides. 
C) Some plants would not taste sweet to us. 
D) The formation of starch in plants involves assembling many G3P molecules, with or without further rearrangements. 
E) G3P is easier for a plant to store. 
A) Formation of a molecule of glucose would require 9 "turns." 
B) G3P more readily forms sucrose and other disaccharides than it does monosaccharides. 
C) Some plants would not taste sweet to us. 
D) The formation of starch in plants involves assembling many G3P molecules, with or without further rearrangements. 
E) G3P is easier for a plant to store.

Question 20

Use the following information to answer the questions below.
Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light. He added aerobic bacteria and then noted in which areas the bacteria congregated. He noted that the largest groups were found in the areas illuminated by the red and blue light.
-An outcome of this experiment was to help determine

Accepted Answer

A) the relationship between heterotrophic and autotrophic organisms. 
B) the relationship between wavelengths of light and the rate of aerobic respiration. 
C) the relationship between wavelengths of light and the amount of heat released. 
D) the relationship between wavelengths of light and the oxygen released during photosynthesis. 
E) the relationship between the concentration of carbon dioxide and the rate of photosynthesis. 
A) the relationship between heterotrophic and autotrophic organisms. 
B) the relationship between wavelengths of light and the rate of aerobic respiration. 
C) the relationship between wavelengths of light and the amount of heat released. 
D) the relationship between wavelengths of light and the oxygen released during photosynthesis. 
E) the relationship between the concentration of carbon dioxide and the rate of photosynthesis.

Exam 10: Photosynthesis

Figure 10.1 -What is the relationship between wavelength of light and the quantity of energy per photon?

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. -Produces three-carbon sugars

Figure 10.1 -Which of the following statements best represents the relationships between the light reactions and the Calvin cycle?

Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle?

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. -Produces molecular oxygen (O₂)

Figure 10.1 -Which of the events listed below occur in the light reactions of photosynthesis?

Figure 10.1 -The splitting of carbon dioxide to form oxygen gas and carbon compounds occurs during

Figure 10.3 -Which of the following sequences correctly represents the flow of electrons during photosynthesis?

Figure 10.1 -In the thylakoid membranes, what is the main role of the antenna pigment molecules?

Figure 10.1 -As a research scientist, you measure the amount of ATP and NADPH consumed by the Calvin cycle in 1 hour. You find 30,000 molecules of ATP consumed, but only 20,000 molecules of NADPH. Where did the extra ATP molecules come from?

In any ecosystem, terrestrial or aquatic, what group(s)is (are)always necessary?

Figure 10.2 Use the following figure and the stages labeled A, B, C, D, and E to answer the following questions. -If ATP used by this plant is labeled with radioactive phosphorus, in which molecules will the radioactivity be measurable after one "turn" of the cycle?

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. -Requires glucose

Figure 10.1 -Figure 10.1 shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. -Requires ATP

Figure 10.3 -Which of the following statements is True concerning Figure 10.3?

Figure 10.2 Use the following figure and the stages labeled A, B, C, D, and E to answer the following questions. -In metabolic processes of cell respiration and photosynthesis, prosthetic groups such as heme and iron-sulfur complexes are encountered. What do they do?

Figure 10.1 -What does the chemiosmotic process in chloroplasts involve?

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. -The sugar that results from three "turns" of the Calvin cycle is glyceraldehyde-3-phosphate (G3P). Which of the following is a consequence of this?

Introduction: Themes in the Study of Life

The Chemical Context of Life

Water and the Fitness of the Environment

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration: Harvesting Chemical Energy

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

From Gene to Protein

Control of Gene Expression

Viruses

Biotechnology

Genomes and Their Evolution

Descent With Modification: a Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity Ii: the Evolution of Seed Plants

Fungi

An Introduction to Animal Diversity

Invertebrates

Vertebrates

Plant Structure, Growth, and Development

Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons, Synapses, and Signaling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behavior

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems

Conservation Biology and Restoration Ecology

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