Question 1

Figure 8.1
-What wavelength of light in Figure 8.1 is most effective in driving photosynthesis?

Accepted Answer

A)  420 mm 
B)  475 mm 
C)  575 mm 
D)  625 mm 
E)  730 mm 
A)  420 mm 
B)  475 mm 
C)  575 mm 
D)  625 mm 
E)  730 mm

Question 2

CAM plants keep stomata closed in daytime, thus reducing loss of water. They can do this because they

Accepted Answer

A)  fix CO2 into organic acids during the night. 
B)  fix CO2 into sugars in the bundle-sheath cells. 
C)  fix CO2 into pyruvate in the mesophyll cells. 
D)  use the enzyme phosphofructokinase, which outcompetes rubisco for CO2. 
E)  use photosystem I and photosystem II at night. 
A)  fix CO2 into organic acids during the night. 
B)  fix CO2 into sugars in the bundle-sheath cells. 
C)  fix CO2 into pyruvate in the mesophyll cells. 
D)  use the enzyme phosphofructokinase, which outcompetes rubisco for CO2. 
E)  use photosystem I and photosystem II at night.

Question 3

The pH of the inner thylakoid space has been measured, as have the pH of the stroma and of the cytosol of a particular plant cell. Which, if any, relationship would you expect to find?

Accepted Answer

A)  The pH within the thylakoid is less than that of the stroma. 
B)  The pH of the stroma is lower than that of the other two measurements. 
C)  The pH of the stroma is higher than that of the thylakoid space but lower than that of the cytosol. 
D)  The pH of the thylakoid space is higher than that anywhere else in the cell. 
E)  There is no consistent relationship. 
A)  The pH within the thylakoid is less than that of the stroma. 
B)  The pH of the stroma is lower than that of the other two measurements. 
C)  The pH of the stroma is higher than that of the thylakoid space but lower than that of the cytosol. 
D)  The pH of the thylakoid space is higher than that anywhere else in the cell. 
E)  There is no consistent relationship.

Question 4

Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be

Accepted Answer

A)  to determine if they have thylakoids in the chloroplasts. 
B)  to test for liberation of O2 in the light. 
C)  to test for CO2 fixation in the dark. 
D)  to do experiments to generate an action spectrum. 
E)  to test for production of either sucrose or starch. 
A)  to determine if they have thylakoids in the chloroplasts. 
B)  to test for liberation of O2 in the light. 
C)  to test for CO2 fixation in the dark. 
D)  to do experiments to generate an action spectrum. 
E)  to test for production of either sucrose or starch.

Question 5

In autotrophic bacteria, where is chlorophyll located?

Accepted Answer

A)  in chloroplast membranes 
B)  in chloroplast stroma 
C)  in the ribosomes 
D)  in the nucleoid 
E)  in the infolded plasma membrane 
A)  in chloroplast membranes 
B)  in chloroplast stroma 
C)  in the ribosomes 
D)  in the nucleoid 
E)  in the infolded plasma membrane

Question 6

Figure 8.1
-Figure 8.1 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 7

In any ecosystem, terrestrial or aquatic, which of the following 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 8

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 9

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 10

Where are the molecules of the electron transport chain found in plant cells?

Accepted Answer

A)  thylakoid membranes of chloroplasts 
B)  stroma of chloroplasts 
C)  outer membrane of mitochondria 
D)  matrix of mitochondria 
E)  cytoplasm 
A)  thylakoid membranes of chloroplasts 
B)  stroma of chloroplasts 
C)  outer membrane of mitochondria 
D)  matrix of mitochondria 
E)  cytoplasm

Question 11

What is the primary function of the Calvin cycle?

Accepted Answer

A)  use ATP to release carbon dioxide 
B)  use NADPH to release carbon dioxide 
C)  split water and release oxygen 
D)  transport RuBP out of the chloroplast 
E)  synthesize simple sugars from carbon dioxide 
A)  use ATP to release carbon dioxide 
B)  use NADPH to release carbon dioxide 
C)  split water and release oxygen 
D)  transport RuBP out of the chloroplast 
E)  synthesize simple sugars from carbon dioxide

Exam 8: Photosynthesis

Figure 8.1 -What wavelength of light in Figure 8.1 is most effective in driving photosynthesis?

CAM plants keep stomata closed in daytime, thus reducing loss of water. They can do this because they

The pH of the inner thylakoid space has been measured, as have the pH of the stroma and of the cytosol of a particular plant cell. Which, if any, relationship would you expect to find?

Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be

In autotrophic bacteria, where is chlorophyll located?

Figure 8.1 -Figure 8.1 shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?

In any ecosystem, terrestrial or aquatic, which of the following are always necessary?

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?

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

Where are the molecules of the electron transport chain found in plant cells?

What is the primary function of the Calvin cycle?

Introduction: Evolution and the Foundations of Biology

The Chemical Context of Life

Carbon and the Molecular Diversity of Life

A Tour of the Cell

Membrane Transport and Cell Signaling

An Introduction to Metabolism

Cellular Respiration and Fermentation

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Regulation of Gene Expression

Development, Stem Cells, and Cancer

Viruses

Genomes and Their Evolution

Descent With Modification

Phylogeny

The Evolution of Populations

The Origin of Species

Broad Patterns of Evolution

Early Life and the Diversification of Prokaryotes

The Origin and Diversification of Eukaryotes

The Colonization of Land by Plants and Fungi

The Rise of Animal Diversity

Plant Structure and Growth

Resource Acquisition, Nutrition, and Transport in Vascular Plants

Reproduction and Domestication of Flowering Plants

Plant Responses to Internal and External Signals

Homeostasis and Endocrine Signaling

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Reproduction and Development

Neurons, Synapses, and Signaling

Nervous and Sensory Systems

Motor Mechanisms and Behavior

Population Ecology and the Distribution of Organisms

Species Interactions

Ecosystems and Energy

Global Ecology and Conservation Biology

Filters