Question 1

Which of the following have been used to produce biofuels?

Accepted Answer

A) algae 
B) soybeans 
C) rapeseed 
D) flaxseed 
E) all of these 
A) algae 
B) soybeans 
C) rapeseed 
D) flaxseed 
E) all of these E

Question 2

Photosystems are mainly

Accepted Answer

A) light-trapping molecules. 
B) enzymes for splitting water. 
C) clusters of ATP molecules. 
D) sugar assembly sites. 
E) electron transport systems. 
A) light-trapping molecules. 
B) enzymes for splitting water. 
C) clusters of ATP molecules. 
D) sugar assembly sites. 
E) electron transport systems. A

Question 3

Which of the following donate(s) phosphate in the Calvin-Benson cycle?

Accepted Answer

A) NADPH 
B) ATP 
C) RuBP 
D) PGAL 
E) all of these 
A) NADPH 
B) ATP 
C) RuBP 
D) PGAL 
E) all of these B

Question 4

Which of the following is(are) TRUE of photoautotrophs?

Accepted Answer

A) They are responsible for the first concentration of free oxygen in the atmosphere. 
B) They are responsible for an early extinction of most anaerobic organisms. 
C) They are carbon-rich food baskets for heterotrophs. 
D) They are responsible for the presence of the ozone layer of the atmosphere 
E) All of these are true. 
A) They are responsible for the first concentration of free oxygen in the atmosphere. 
B) They are responsible for an early extinction of most anaerobic organisms. 
C) They are carbon-rich food baskets for heterotrophs. 
D) They are responsible for the presence of the ozone layer of the atmosphere 
E) All of these are true.

Question 5

The transition of the early earth's atmosphere from one rich in hydrogen to one rich in oxygen may be attributed to

Accepted Answer

A) photosystem II. 
B) photosystem I. 
C) the cyclic pathway of photosynthesis. 
D) the light-independent reactions. 
E) the activity of the electron transfer chain. 
A) photosystem II. 
B) photosystem I. 
C) the cyclic pathway of photosynthesis. 
D) the light-independent reactions. 
E) the activity of the electron transfer chain.

Question 6

The first stable compound produced from CO2 in the light-independent reaction is

Accepted Answer

A) phosphoglycerate (PG
A) . 
B) ribulose bisphosphate (RuBP). 
C) phosphoglyceraldehyde (PGAL). 
D) O2. 
E) NADP+. 
A) phosphoglycerate (PG
A) . 
B) ribulose bisphosphate (RuBP). 
C) phosphoglyceraldehyde (PGAL). 
D) O2. 
E) NADP+.

Question 7

According to the figure, the alga's photosynthetic pigments absorb

Accepted Answer

A) high energy wavelengths of light only. 
B) low energy wavelengths of light only. 
C) both high and low energy wavelengths of light. 
D) high to medium energy wavelengths of light. 
E) medium to low energy wavelengths of light. 
A) high energy wavelengths of light only. 
B) low energy wavelengths of light only. 
C) both high and low energy wavelengths of light. 
D) high to medium energy wavelengths of light. 
E) medium to low energy wavelengths of light.

Question 8

Which of the following are accessory pigments in plant photosynthesis?

Accepted Answer

A) carotenoids 
B) xanthophylls 
C) anthocyanins 
D) chlorophyll b 
E) all of these 
A) carotenoids 
B) xanthophylls 
C) anthocyanins 
D) chlorophyll b 
E) all of these

Question 9

The proteins associated with the light-dependent reactions of photosynthesis are located

Accepted Answer

A) on the outer membranes of the chloroplast. 
B) in the stroma. 
C) on the thylakoid membrane. 
D) throughout the cytoplasm of plant cells. 
E) in the thylakoid compartment. 
A) on the outer membranes of the chloroplast. 
B) in the stroma. 
C) on the thylakoid membrane. 
D) throughout the cytoplasm of plant cells. 
E) in the thylakoid compartment.

Question 10

Which of the following is TRUE concerning the C4 pathway?

Accepted Answer

A) It produces large amounts of carbohydrates. 
B) It feeds into the C3 pathway. 
C) It is the mechanism of photorespiration. 
D) It involves the activity of rubisco. 
E) All of these are true. 
A) It produces large amounts of carbohydrates. 
B) It feeds into the C3 pathway. 
C) It is the mechanism of photorespiration. 
D) It involves the activity of rubisco. 
E) All of these are true.

Question 11

Which of the following chemicals has five carbon atoms?

Accepted Answer

A) phosphoglycerate (PG
A)  
B) ribulose bisphosphate (RuBP) 
C) phosphoglyceraldehyde (PGAL) 
D) glucose 
E) none of these 
A) phosphoglycerate (PG
A)  
B) ribulose bisphosphate (RuBP) 
C) phosphoglyceraldehyde (PGAL) 
D) glucose 
E) none of these

Question 12

The light-harvesting complexes of photosynthesis are located

Accepted Answer

A) on the outer surface of the outer membrane. 
B) on the inner surface of the outer membrane. 
C) in the thylakoid compartment. 
D) in the stroma. 
E) in the thylakoid membrane. 
A) on the outer surface of the outer membrane. 
B) on the inner surface of the outer membrane. 
C) in the thylakoid compartment. 
D) in the stroma. 
E) in the thylakoid membrane.

Question 13

Which of the following compounds has six carbon atoms?

Accepted Answer

A) phosphoglycerate (PG
A)  
B) ribulose bisphosphate (RuBP) 
C) phosphoglyceraldehyde (PGAL) 
D) glucose 
E) oxaloacetate 
A) phosphoglycerate (PG
A)  
B) ribulose bisphosphate (RuBP) 
C) phosphoglyceraldehyde (PGAL) 
D) glucose 
E) oxaloacetate

Question 14

An important electron and hydrogen acceptor in the noncyclic pathway is

Accepted Answer

A) NADP+. 
B) ADP. 
C) O2. 
D) H2O. 
E) glucose. 
A) NADP+. 
B) ADP. 
C) O2. 
D) H2O. 
E) glucose.

Question 15

Chlorophyll reflects which color of light?

Accepted Answer

A) red 
B) yellow 
C) orange 
D) green 
E) blue 
A) red 
B) yellow 
C) orange 
D) green 
E) blue

Question 16

Which of the following is NOT TRUE of photolysis?

Accepted Answer

A) It is a function of the cyclic pathway. 
B) It involves photosystem II. 
C) It occurs in the light-dependent reactions. 
D) It is the source of oxygen in photosynthesis. 
E) It directly replaces electrons lost by p680. 
A) It is a function of the cyclic pathway. 
B) It involves photosystem II. 
C) It occurs in the light-dependent reactions. 
D) It is the source of oxygen in photosynthesis. 
E) It directly replaces electrons lost by p680.

Question 17

Which of the following statements is NOT TRUE?

Accepted Answer

A) Photons are packages of solar energy. 
B) Each photon consists of a fixed amount of energy. 
C) The least energetic photons travel in longer wavelengths. 
D) Photons with different energy levels are perceived as exhibiting different colors. 
E) Photons of visible light have wavelengths longer than 750 nanometers. 
A) Photons are packages of solar energy. 
B) Each photon consists of a fixed amount of energy. 
C) The least energetic photons travel in longer wavelengths. 
D) Photons with different energy levels are perceived as exhibiting different colors. 
E) Photons of visible light have wavelengths longer than 750 nanometers.

Question 18

Which event occurs last in the noncyclic pathway of ATP formation?

Accepted Answer

A) excitation of p700 
B) transfer of energy to p700 
C) formation of NADPH 
D) ATP synthesis 
E) transfer of electrons to p680 
A) excitation of p700 
B) transfer of energy to p700 
C) formation of NADPH 
D) ATP synthesis 
E) transfer of electrons to p680

Question 19

Where in a plant cell is chlorophyll found?

Accepted Answer

A) on the outer chloroplast membrane 
B) in the cytoplasm of the cell 
C) in the stroma 
D) in the thylakoids 
E) none of these 
A) on the outer chloroplast membrane 
B) in the cytoplasm of the cell 
C) in the stroma 
D) in the thylakoids 
E) none of these

Question 20

Which of the following is formed last in the transfer of solar energy?

Accepted Answer

A) H+ 
B) excited electrons 
C) ATP 
D) O2 
E) NADPH 
A) H+ 
B) excited electrons 
C) ATP 
D) O2 
E) NADPH

Exam 7: Where It Startsphotosynthesis

Which of the following have been used to produce biofuels?

Photosystems are mainly

Which of the following donate(s) phosphate in the Calvin-Benson cycle?

Which of the following is(are) TRUE of photoautotrophs?

The transition of the early earth's atmosphere from one rich in hydrogen to one rich in oxygen may be attributed to

The first stable compound produced from CO2 in the light-independent reaction is

According to the figure, the alga's photosynthetic pigments absorb

Which of the following are accessory pigments in plant photosynthesis?

The proteins associated with the light-dependent reactions of photosynthesis are located

Which of the following is TRUE concerning the C4 pathway?

Which of the following chemicals has five carbon atoms?

The light-harvesting complexes of photosynthesis are located

Which of the following compounds has six carbon atoms?

An important electron and hydrogen acceptor in the noncyclic pathway is

Chlorophyll reflects which color of light?

Which of the following is NOT TRUE of photolysis?

Which of the following statements is NOT TRUE?

Which event occurs last in the noncyclic pathway of ATP formation?

Where in a plant cell is chlorophyll found?

Which of the following is formed last in the transfer of solar energy?

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters

The first stable compound produced from CO₂ in the light-independent reaction is