Question 1

The oxygen released in photosynthesis comes from

Accepted Answer

A) carbon dioxide. 
B) glucose. 
C) ribulose bisphosphate. 
D) water. 
E) atmospheric oxygen. 
A) carbon dioxide. 
B) glucose. 
C) ribulose bisphosphate. 
D) water. 
E) atmospheric oxygen.

Question 2

Which of the following has the most energy?

Accepted Answer

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

Question 3

Which of the following statements is NOT TRUE concerning an electron that has absorbed a photon?

Accepted Answer

A) It moves to a higher energy level. 
B) It becomes more stable. 
C) It quickly returns to its original energy level. 
D) It may emit energy. 
E) It becomes excited. 
A) It moves to a higher energy level. 
B) It becomes more stable. 
C) It quickly returns to its original energy level. 
D) It may emit energy. 
E) It becomes excited.

Question 4

Excess glucose in most complex plants is stored as

Accepted Answer

A) fructose. 
B) starch. 
C) sucrose. 
D) glycogen. 
E) cellulose. 
A) fructose. 
B) starch. 
C) sucrose. 
D) glycogen. 
E) cellulose.

Question 5

Which of the following is NOT produced in the synthesis (light-independent) reactions?

Accepted Answer

A) NADPH 
B) phosphoglyceric acid (PG
A)  
C) phosphoglyceraldehyde (PGAL) 
D) glucose 
E) ribulose bisphosphate 
A) NADPH 
B) phosphoglyceric acid (PG
A)  
C) phosphoglyceraldehyde (PGAL) 
D) glucose 
E) ribulose bisphosphate

Question 6

Which of the following colors of light has the shortest wavelength?

Accepted Answer

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

Question 7

Air enters and leaves through the

Accepted Answer

A) upper epidermis. 
B) lower epidermis. 
C) stomata. 
D) mesophyll. 
E) all of these. 
A) upper epidermis. 
B) lower epidermis. 
C) stomata. 
D) mesophyll. 
E) all of these.

Question 8

The light-independent reactions of photosynthesis

Accepted Answer

A) fix carbon dioxide. 
B) release oxygen. 
C) cannot occur in light. 
D) generate ATP. 
E) do all of these. 
A) fix carbon dioxide. 
B) release oxygen. 
C) cannot occur in light. 
D) generate ATP. 
E) do all of these.

Question 9

Which of the following statements is NOT TRUE concerning photosynthetic plants?

Accepted Answer

A) They get carbon from the environment. 
B) They obtain energy from the environment. 
C) They make their own food. 
D) They provide food for others. 
E) They require no more than energy and a carbon source to make their food. 
A) They get carbon from the environment. 
B) They obtain energy from the environment. 
C) They make their own food. 
D) They provide food for others. 
E) They require no more than energy and a carbon source to make their food.

Question 10

The reactions of photosynthesis begin with

Accepted Answer

A) hydrolysis of water. 
B) synthesis of sugar. 
C) excitation of chlorophyll electrons. 
D) manufacturing of ATP. 
E) synthesis of NADPH. 
A) hydrolysis of water. 
B) synthesis of sugar. 
C) excitation of chlorophyll electrons. 
D) manufacturing of ATP. 
E) synthesis of NADPH.

Question 11

All of the products of the light-dependent reactions of photosynthesis listed below are used in the light-independent reactions EXCEPT for

Accepted Answer

A) O2. 
B) electrons. 
C) NADPH. 
D) ATP. 
E) hydrogen protons contributed by NADPH. 
A) O2. 
B) electrons. 
C) NADPH. 
D) ATP. 
E) hydrogen protons contributed by NADPH.

Question 12

Engelmann's investigation to determine the effective wavelengths of light in photosynthesis depended on a photosynthetic alga's

Accepted Answer

A) use of CO2. 
B) release of O2. 
C) use of H2O. 
D) use of ATP. 
E) production of carbohydrate. 
A) use of CO2. 
B) release of O2. 
C) use of H2O. 
D) use of ATP. 
E) production of carbohydrate.

Question 13

The p700 photosystem is designated as photosystem "I" because it

Accepted Answer

A) absorbs light energy first. 
B) absorbs more energy than photosystem II. 
C) is the primary photosystem. 
D) is thought to have evolved first. 
E) obtains electrons before photosystem II. 
A) absorbs light energy first. 
B) absorbs more energy than photosystem II. 
C) is the primary photosystem. 
D) is thought to have evolved first. 
E) obtains electrons before photosystem II.

Question 14

Which of the following statements is(are) TRUE of pigments?

Accepted Answer

A) They absorb some photons. 
B) They reflect some photons. 
C) They absorb photons of specific colors. 
D) They absorb photons of specific wavelengths. 
E) They do all of these. 
A) They absorb some photons. 
B) They reflect some photons. 
C) They absorb photons of specific colors. 
D) They absorb photons of specific wavelengths. 
E) They do all of these.

Question 15

How many molecules of PGAL (phosphoglyceraldehyde) are used to regenerate the six molecules of RuBP (ribulose bisphosphate)?

Accepted Answer

A) 3 
B) 6 
C) 10 
D) 12 
E) 18 
A) 3 
B) 6 
C) 10 
D) 12 
E) 18

Question 16

Which of the following substances found in C4 plants has four 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 17

The first pathway of photosynthesis was

Accepted Answer

A) the cyclic pathway. 
B) the noncyclic pathway. 
C) similar to anaerobic respiration. 
D) similar to aerobic respiration. 
E) based on the fermentation pathway. 
A) the cyclic pathway. 
B) the noncyclic pathway. 
C) similar to anaerobic respiration. 
D) similar to aerobic respiration. 
E) based on the fermentation pathway.

Question 18

With regard to photosynthesis, photorespiration

Accepted Answer

A) is more efficient in producing carbohydrates. 
B) predominates in C3 plants in cool weather when water is plentiful. 
C) predominates in C4 plants on hot days. 
D) produces the same amount of PGA. 
E) does none of these. 
A) is more efficient in producing carbohydrates. 
B) predominates in C3 plants in cool weather when water is plentiful. 
C) predominates in C4 plants on hot days. 
D) produces the same amount of PGA. 
E) does none of these.

Question 19

The carbon source for organisms that derive their energy from photosynthesis is

Accepted Answer

A) the soil. 
B) carbon dioxide. 
C) any hydrocarbon. 
D) methane. 
E) glucose. 
A) the soil. 
B) carbon dioxide. 
C) any hydrocarbon. 
D) methane. 
E) glucose.

Question 20

As free oxygen increased in the early atmosphere,

Accepted Answer

A) most anaerobic organisms perished. 
B) some anaerobic organisms survived in seafloor sediments. 
C) organisms evolved pathways for detoxifying oxygen. 
D) the amount of UV radiation reaching the earth decreased. 
E) all of these happened. 
A) most anaerobic organisms perished. 
B) some anaerobic organisms survived in seafloor sediments. 
C) organisms evolved pathways for detoxifying oxygen. 
D) the amount of UV radiation reaching the earth decreased. 
E) all of these happened.

Exam 7: Where It Startsphotosynthesis

The oxygen released in photosynthesis comes from

Which of the following has the most energy?

Which of the following statements is NOT TRUE concerning an electron that has absorbed a photon?

Excess glucose in most complex plants is stored as

Which of the following is NOT produced in the synthesis (light-independent) reactions?

Which of the following colors of light has the shortest wavelength?

Air enters and leaves through the

The light-independent reactions of photosynthesis

Which of the following statements is NOT TRUE concerning photosynthetic plants?

The reactions of photosynthesis begin with

All of the products of the light-dependent reactions of photosynthesis listed below are used in the light-independent reactions EXCEPT for

Engelmann's investigation to determine the effective wavelengths of light in photosynthesis depended on a photosynthetic alga's

The p700 photosystem is designated as photosystem "I" because it

Which of the following statements is(are) TRUE of pigments?

How many molecules of PGAL (phosphoglyceraldehyde) are used to regenerate the six molecules of RuBP (ribulose bisphosphate)?

Which of the following substances found in C4 plants has four carbon atoms?

The first pathway of photosynthesis was

With regard to photosynthesis, photorespiration

The carbon source for organisms that derive their energy from photosynthesis is

As free oxygen increased in the early atmosphere,

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

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