Question 1

For each phrase, choose the most appropriate process.
-requires rubisco

Accepted Answer

A) light-dependent reactions only 
B) Calvin cycle only 
C) light-dependent reactions and the Calvin cycle both 
D) neither the light-dependent reactions nor the Calvin cycle 
A) light-dependent reactions only 
B) Calvin cycle only 
C) light-dependent reactions and the Calvin cycle both 
D) neither the light-dependent reactions nor the Calvin cycle B

Question 2

Which of the following best explains why regulating opening and closing stomata is more difficult in dry and hot environments?

Accepted Answer

A) Photorespiration becomes a bigger problem as the climate becomes colder. 
B) Photorespiration becomes a bigger problem as the climate becomes warmer. 
C) Photorespiration becomes a lesser problem as the climate becomes warmer. 
D) Photorespiration becomes a lesser problem as the climate becomes colder. 
A) Photorespiration becomes a bigger problem as the climate becomes colder. 
B) Photorespiration becomes a bigger problem as the climate becomes warmer. 
C) Photorespiration becomes a lesser problem as the climate becomes warmer. 
D) Photorespiration becomes a lesser problem as the climate becomes colder. B

Question 3

Which of the following is required for photons to be used as a source of energy?

Accepted Answer

A) They must be particles. 
B) They must be energized. 
C) They must be absorbed by a molecule. 
D) They must be reflected by a molecule. 
A) They must be particles. 
B) They must be energized. 
C) They must be absorbed by a molecule. 
D) They must be reflected by a molecule. C

Question 4

Which products of the light reactions are used in the Calvin cycle?

Accepted Answer

A) ATP and NADPH 
B) CO2 and RuBP 
C) water, O2, ATP 
D) electrons and photons 
A) ATP and NADPH 
B) CO2 and RuBP 
C) water, O2, ATP 
D) electrons and photons

Question 5

Match the terms and descriptions with the correct labelled part in the following illustration. A labelled part may be used once, more than once, or not at all.  
-site of light-independent reactions

Accepted Answer

The answer of Match the terms and descriptions with the...

Question 6

Suppose that you are a botanist looking for new species of C4 plants. Where should you focus your search?

Accepted Answer

A) in Arizona 
B) in the Florida Everglades 
C) in an equatorial rainforest 
D) in Nova Scotia 
A) in Arizona 
B) in the Florida Everglades 
C) in an equatorial rainforest 
D) in Nova Scotia

Question 7

In Engelmann's classic experiment, why were the oxygen-requiring bacteria clustered around the regions of Spirogyra algae that were bathed in red, blue, and violet light?

Accepted Answer

A) because photosynthesis is most active in those wavelengths of light and thus more oxygen is consumed by the algae in those regions 
B) because chlorophyll is green and thus reflects green light 
C) because photosynthesis is most active in those wavelengths of light and thus more oxygen is produced by the algae in those regions 
D) because the bacteria were immobile and that is where Engelmann happened to place them 
A) because photosynthesis is most active in those wavelengths of light and thus more oxygen is consumed by the algae in those regions 
B) because chlorophyll is green and thus reflects green light 
C) because photosynthesis is most active in those wavelengths of light and thus more oxygen is produced by the algae in those regions 
D) because the bacteria were immobile and that is where Engelmann happened to place them

Question 8

Where in a plant cell is ATP synthase found?

Accepted Answer

A) in the thylakoid and inner mitochondrial membranes 
B) in the thylakoid membrane and embedded in the plasma membrane 
C) embedded in the plasma membrane and in the inner mitochondrial membranes 
D) in the inner mitochondrial membranes only 
A) in the thylakoid and inner mitochondrial membranes 
B) in the thylakoid membrane and embedded in the plasma membrane 
C) embedded in the plasma membrane and in the inner mitochondrial membranes 
D) in the inner mitochondrial membranes only

Question 9

Why is the molecule of chlorophyll a in photosystem II's reaction centre known as P680?

Accepted Answer

A) because it absorbs 680 photons per minute 
B) because it will generate 680 molecules of ATP per photon absorbed 
C) because it absorbs photons with a wavelength of 680 nm 
D) because exactly 680 accessory pigments are in the photosystem 
A) because it absorbs 680 photons per minute 
B) because it will generate 680 molecules of ATP per photon absorbed 
C) because it absorbs photons with a wavelength of 680 nm 
D) because exactly 680 accessory pigments are in the photosystem

Question 10

Why do the light reactions have both cyclic and noncyclic electron pathways?

Accepted Answer

A) to ensure that ATP and NAPDH are generated in a 1:1 molar ratio 
B) because only the combination of pathways can generate sufficient NADPH for the light-independent reactions 
C) to provide more electrons from water than would be released by the noncyclic pathway 
D) because the light-independent reactions require ATP and NADPH in different amounts than are generated by noncyclic electron flow 
A) to ensure that ATP and NAPDH are generated in a 1:1 molar ratio 
B) because only the combination of pathways can generate sufficient NADPH for the light-independent reactions 
C) to provide more electrons from water than would be released by the noncyclic pathway 
D) because the light-independent reactions require ATP and NADPH in different amounts than are generated by noncyclic electron flow

Question 11

Where do the electrons from NADPH go in the Calvin cycle?

Accepted Answer

A) They are added to oxygen, just like in cellular respiration. 
B) They are used to regenerate RuBP from G3P. 
C) They are transferred to rubisco. 
D) They are added to 1, 3-bisphosphoglycerate. 
A) They are added to oxygen, just like in cellular respiration. 
B) They are used to regenerate RuBP from G3P. 
C) They are transferred to rubisco. 
D) They are added to 1, 3-bisphosphoglycerate.

Question 12

At which temperature does photorespiration use as much as 50% of a plant's energy?

Accepted Answer

A) 10ºC 
B) 20ºC 
C) 23ºC 
D) 35ºC 
A) 10ºC 
B) 20ºC 
C) 23ºC 
D) 35ºC

Question 13

Glucose is the only sugar produced from photosynthesis.

Accepted Answer

A) True 
 B)False

Question 14

What is the product of the addition of O2 to RuBP by rubisco?

Accepted Answer

A) one molecule of G3P 
B) one molecule of 3PGA and one molecule of phosphoglycolate 
C) two molecules of phosphoglycolate 
D) three molecules of 3PGA 
A) one molecule of G3P 
B) one molecule of 3PGA and one molecule of phosphoglycolate 
C) two molecules of phosphoglycolate 
D) three molecules of 3PGA

Question 15

For each phrase, choose the most appropriate process.
-requires ATP

Accepted Answer

A) light-dependent reactions only 
B) Calvin cycle only 
C) light-dependent reactions and the Calvin cycle both 
D) neither the light-dependent reactions nor the Calvin cycle 
A) light-dependent reactions only 
B) Calvin cycle only 
C) light-dependent reactions and the Calvin cycle both 
D) neither the light-dependent reactions nor the Calvin cycle

Question 16

Atmospheric O2 is actually a waste product of photosynthesis.

Accepted Answer

A) True 
 B)False

Question 17

Why is the molecule of chlorophyll a in photosystem I's reaction centre known as P700?

Accepted Answer

A) because 700 molecules of NADPH are generated per photon of light absorbed 
B) because it absorbs 700 photons per minute 
C) because exactly 700 accessory pigments are in the photosystem 
D) because it absorbs photons with a wavelength of 700 nm 
A) because 700 molecules of NADPH are generated per photon of light absorbed 
B) because it absorbs 700 photons per minute 
C) because exactly 700 accessory pigments are in the photosystem 
D) because it absorbs photons with a wavelength of 700 nm

Question 18

Which of the following are used to generate biofuels?

Accepted Answer

A) single-celled algae 
B) crop plants 
C) multicellular algae 
D) any plants 
A) single-celled algae 
B) crop plants 
C) multicellular algae 
D) any plants

Question 19

Photorespiration is even more detrimental because photoautotrophs cannot use phosphoglycolate.

Accepted Answer

A) True 
 B)False

Question 20

Compare and contrast the role of O2 and H2O in photosynthesis and cellular respiration.

Accepted Answer

The role of oxygen gas and water are alm

Exam 7: Photosynthesis

For each phrase, choose the most appropriate process. -requires rubisco

Which of the following best explains why regulating opening and closing stomata is more difficult in dry and hot environments?

Which of the following is required for photons to be used as a source of energy?

Which products of the light reactions are used in the Calvin cycle?

Match the terms and descriptions with the correct labelled part in the following illustration. A labelled part may be used once, more than once, or not at all. -site of light-independent reactions

Suppose that you are a botanist looking for new species of C4 plants. Where should you focus your search?

In Engelmann's classic experiment, why were the oxygen-requiring bacteria clustered around the regions of Spirogyra algae that were bathed in red, blue, and violet light?

Where in a plant cell is ATP synthase found?

Why is the molecule of chlorophyll a in photosystem II's reaction centre known as P680?

Why do the light reactions have both cyclic and noncyclic electron pathways?

Where do the electrons from NADPH go in the Calvin cycle?

At which temperature does photorespiration use as much as 50% of a plant's energy?

Glucose is the only sugar produced from photosynthesis.

What is the product of the addition of O2 to RuBP by rubisco?

For each phrase, choose the most appropriate process. -requires ATP

Atmospheric O2 is actually a waste product of photosynthesis.

Why is the molecule of chlorophyll a in photosystem I's reaction centre known as P700?

Which of the following are used to generate biofuels?

Photorespiration is even more detrimental because photoautotrophs cannot use phosphoglycolate.

Compare and contrast the role of O2 and H2O in photosynthesis and cellular respiration.

Light and Life

The Cell: an Overview

Defining Life and Its Origins

Energy and Enzymes

Cell Membranes and Signalling

Cellular Respiration

Cell Cycles

Genetic Recombination

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Structure and Expression

Control of Gene Expression

Dna Technologies

Genomes and Proteomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Species and Macroevolution

Understanding the History of Life on Earth

Humans and Evolution

Bacteria and Archaea

Viruses, Viroids, and Prions: Infectious Biological Particles

Protists

Fungi

Plants

Diversity of Animals 1: Sponges, Radiata, Platyhelminthes, and Protostomes

Diversity of Animals 2: Deuterostomes: Vertebrates and Their Closest Relatives

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Conservation of Biodiversity

Putting Selection to Work

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Transport in Animals: the Circulatory System

Reproduction in Animals

Animal Development

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Integration

Muscles, Skeletons, and Body Movements

Animal Behaviour

Animal Nutrition

Gas Exchange: the Respiratory System

Regulating the Internal Environment

Defences Against Disease

Conservation and Evolutionary Physiology

Filters

What is the product of the addition of O₂ to RuBP by rubisco?

Atmospheric O₂ is actually a waste product of photosynthesis.

Compare and contrast the role of O₂ and H₂O in photosynthesis and cellular respiration.