Question 1

F.Blackman showed that:

Accepted Answer

A) air "restored" by vegetation could support the breathing of animals. 
B) air is "restored" only in the presence of light and only by the green parts of the plant. 
C) photosynthesis has a light-dependent stage and a light-independent stage. 
D) isolated chloroplasts are able to produce O2 in the absence of light. 
E) all the substance of a plant is provided by water and not the soil. 
A) air "restored" by vegetation could support the breathing of animals. 
B) air is "restored" only in the presence of light and only by the green parts of the plant. 
C) photosynthesis has a light-dependent stage and a light-independent stage. 
D) isolated chloroplasts are able to produce O2 in the absence of light. 
E) all the substance of a plant is provided by water and not the soil.

Question 2

Light is composed of particles called:

Accepted Answer

A) electrons. 
B) protons. 
C) neutrons. 
D) gamma rays. 
E) photons. 
A) electrons. 
B) protons. 
C) neutrons. 
D) gamma rays. 
E) photons.

Question 3

Which of the following statements about photorespiration is FALSE?

Accepted Answer

A) It yields ATP but not NADPH. 
B) Phosphoglycolate is an intermediate. 
C) It consumes oxygen and releases CO2. 
D) It is a wasteful process. 
E) Three cellular organelles participate in the process. 
A) It yields ATP but not NADPH. 
B) Phosphoglycolate is an intermediate. 
C) It consumes oxygen and releases CO2. 
D) It is a wasteful process. 
E) Three cellular organelles participate in the process.

Question 4

C3-C4 intermediates provide evidence for the evolution of C3 plants from C4 ancestors.

Accepted Answer

A) True 
 B)False

Question 5

The ______ complex links photosystems I and II.

Accepted Answer

A) ATP synthase 
B) light-harvesting 
C) oxygen-evolving 
D) water photolysis 
E) cytochrome b6/f 
A) ATP synthase 
B) light-harvesting 
C) oxygen-evolving 
D) water photolysis 
E) cytochrome b6/f

Question 6

Which of the following statements about the Calvin cycle is FALSE?

Accepted Answer

A) It requires more ATP than NADPH. 
B) Each reaction is catalyzed by a specific enzyme. 
C) It regenerates ribulose 1,5-bisphosphate. 
D) It fixes CO2. 
E) It uses ATP from noncyclic, but not cyclic, photophosphorylation. 
A) It requires more ATP than NADPH. 
B) Each reaction is catalyzed by a specific enzyme. 
C) It regenerates ribulose 1,5-bisphosphate. 
D) It fixes CO2. 
E) It uses ATP from noncyclic, but not cyclic, photophosphorylation.

Question 7

The Calvin cycle takes place in the:

Accepted Answer

A) lumen of the thylakoid. 
B) chloroplast stroma. 
C) thylakoid membrane. 
D) cytoplasm. 
E) mitochondrial matrix. 
A) lumen of the thylakoid. 
B) chloroplast stroma. 
C) thylakoid membrane. 
D) cytoplasm. 
E) mitochondrial matrix.

Question 8

The ATP and NADPH generated by the light reactions are used in the Calvin cycle.

Accepted Answer

A) True 
 B)False

Question 9

One of the benefits of photorespiration is to remove phosphoglycolate from the plant.

Accepted Answer

A) True 
 B)False

Question 10

One of the benefits of photorespiration is removing toxic:

Accepted Answer

A) 3-phosphoglyceraldehyde. 
B) phosphoglycolate. 
C) ribulose-bisphosphate. 
D) 3-phosphoglycerate. 
E) oxaloacetate. 
A) 3-phosphoglyceraldehyde. 
B) phosphoglycolate. 
C) ribulose-bisphosphate. 
D) 3-phosphoglycerate. 
E) oxaloacetate.

Question 11

Following photolysis, the resulting protons are released into the ______, contributing to the proton gradient across the ______ membrane.

Accepted Answer

A) lumen of the thylakoid; thylakoid 
B) chloroplast stroma; outer chloroplast 
C) chloroplast stroma; thylakoid 
D) chloroplast matrix; inner chloroplast 
E) cytosol; inner mitochondrial 
A) lumen of the thylakoid; thylakoid 
B) chloroplast stroma; outer chloroplast 
C) chloroplast stroma; thylakoid 
D) chloroplast matrix; inner chloroplast 
E) cytosol; inner mitochondrial

Question 12

Which of the following is the very next event that occurs when a chlorophyll molecule absorbs light?

Accepted Answer

A) The energy is released as heat. 
B) Fluorescence occurs. 
C) The electron is boosted to an excited state. 
D) Resonance energy transfer occurs. 
E) The electron is transferred to an electron transport chain. 
A) The energy is released as heat. 
B) Fluorescence occurs. 
C) The electron is boosted to an excited state. 
D) Resonance energy transfer occurs. 
E) The electron is transferred to an electron transport chain.

Question 13

The primary function of ______ is as an anti-oxidant.

Accepted Answer

A) chlorophyll a 
B) carotenoids 
C) phycobilins 
D) bacteriochlorophyll 
E) chlorobium chlorophyll 
A) chlorophyll a 
B) carotenoids 
C) phycobilins 
D) bacteriochlorophyll 
E) chlorobium chlorophyll

Question 14

How many molecules of CO2 are fixed during each turn of the Calvin cycle?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
E) five 
A) one 
B) two 
C) three 
D) four 
E) five

Question 15

Which of the following is a C4 plant?

Accepted Answer

A) rice 
B) oats 
C) Kentucky bluegrass 
D) crabgrass 
E) wheat 
A) rice 
B) oats 
C) Kentucky bluegrass 
D) crabgrass 
E) wheat

Question 16

Which of the following is produced during noncyclic AND cyclic electron flow?

Accepted Answer

A) water 
B) NADPH 
C) sugar 
D) ATP 
E) O2 
A) water 
B) NADPH 
C) sugar 
D) ATP 
E) O2

Question 17

The light-harvesting complex contains does not contain a reaction center.

Accepted Answer

A) True 
 B)False

Question 18

Rubisco can use ______ or CO2 as a substrate.

Accepted Answer

A) 3-phosphoglycerate 
B) O2 
C) glyceraldehyde 3-phosphate 
D) serine 
E) oxaloacetate 
A) 3-phosphoglycerate 
B) O2 
C) glyceraldehyde 3-phosphate 
D) serine 
E) oxaloacetate

Question 19

In the antenna complex, light energy is transferred from one pigment molecule to another by:

Accepted Answer

A) pigment activation. 
B) fluorescence. 
C) resonance energy transfer. 
D) reduction. 
E) oxidation. 
A) pigment activation. 
B) fluorescence. 
C) resonance energy transfer. 
D) reduction. 
E) oxidation.

Question 20

The O2 evolved in photosynthesis comes from:

Accepted Answer

A) carbon dioxide. 
B) water. 
C) glucose. 
D) (CH2O). 
E) (C3H3O3). 
A) carbon dioxide. 
B) water. 
C) glucose. 
D) (CH2O). 
E) (C3H3O3).

Exam 7: Photosynthesis, Light, and Life

F.Blackman showed that:

Light is composed of particles called:

Which of the following statements about photorespiration is FALSE?

C3-C4 intermediates provide evidence for the evolution of C3 plants from C4 ancestors.

The ______ complex links photosystems I and II.

Which of the following statements about the Calvin cycle is FALSE?

The Calvin cycle takes place in the:

The ATP and NADPH generated by the light reactions are used in the Calvin cycle.

One of the benefits of photorespiration is to remove phosphoglycolate from the plant.

One of the benefits of photorespiration is removing toxic:

Following photolysis, the resulting protons are released into the ______, contributing to the proton gradient across the ______ membrane.

Which of the following is the very next event that occurs when a chlorophyll molecule absorbs light?

The primary function of ______ is as an anti-oxidant.

How many molecules of CO2 are fixed during each turn of the Calvin cycle?

Which of the following is a C4 plant?

Which of the following is produced during noncyclic AND cyclic electron flow?

The light-harvesting complex contains does not contain a reaction center.

Rubisco can use ______ or CO2 as a substrate.

In the antenna complex, light energy is transferred from one pigment molecule to another by:

The O2 evolved in photosynthesis comes from:

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

The Movement of Substances Into and Out of Cells

The Flow of Energy

Respiration

Sexual Reproduction and Heredity

The Chemistry of Heredity and Gene Expression

Recombinant Dna Technology, Plant Biotechnology, and Genomics

The Process of Evolution

Systematics: the Science of Biological Diversity

Prokaryotes and Viruses

Fungi

Protists: Algae and Heterotrophic Protists

Bryophytes

Seedless Vascular Plants

Gymnosperms

Introduction to the Angiosperms

Evolution of the Angiosperms

Plants and People

Early Development of the Plant Body

Cells and Tissues of the Plant Body

The Root: Structure and Development

The Shoot: Primary Structure and Development

Secondary Growth in Stems

Regulating Growth and Development: the Plant Hormones

External Factors and Plant Growth

Plant Nutrition and Soils

The Movement of Water and Solutes in Plants

The Dynamics of Communities and Ecosystems

Global Ecology

Filters

C₃-C₄ intermediates provide evidence for the evolution of C₃ plants from C₄ ancestors.

Following photolysis, the resulting protons are released into the , contributing to the proton gradient across the membrane.

How many molecules of CO₂ are fixed during each turn of the Calvin cycle?

Which of the following is a C₄ plant?

Rubisco can use ______ or CO₂ as a substrate.

The O₂ evolved in photosynthesis comes from: