Question 1

When does phytochrome become active in seedlings?

Accepted Answer

A) when a seedling is exposed to wavelengths of blue light 
B) when a seedling is exposed to wavelengths of red light 
C) when a seedling is exposed to wavelengths of green light 
D) when a seedling is exposed to wavelengths of yellow light 
A) when a seedling is exposed to wavelengths of blue light 
B) when a seedling is exposed to wavelengths of red light 
C) when a seedling is exposed to wavelengths of green light 
D) when a seedling is exposed to wavelengths of yellow light

Question 2

The light sensor in a Chlamydomonas cell allows it to sense both light direction and light intensity. What do we call this light sensor?

Accepted Answer

A) a vacuole 
B) an eye 
C) a spot 
D) an eyespot 
A) a vacuole 
B) an eye 
C) a spot 
D) an eyespot

Question 3

How do bioluminescent animals deal with light?

Accepted Answer

A) They absorb light from the environment. 
B) They reflect light to the environment. 
C) They produce their own light. 
D) They transmit light form the environment. 
A) They absorb light from the environment. 
B) They reflect light to the environment. 
C) They produce their own light. 
D) They transmit light form the environment.

Question 4

Which pair is properly matched?

Accepted Answer

A) chlorophyll a and photosynthesis 
B) chlorophyll a and vision 
C) indigo and photosynthesis 
D) indigo and vision 
A) chlorophyll a and photosynthesis 
B) chlorophyll a and vision 
C) indigo and photosynthesis 
D) indigo and vision

Question 5

Which of the following is within the range of heat escaping from the surface of Earth?

Accepted Answer

A) infrared radiation 
B) gamma rays 
C) UV radiation 
D) X-rays 
A) infrared radiation 
B) gamma rays 
C) UV radiation 
D) X-rays

Question 6

Carotenoids are accessory pigments that can protect the photosynthetic apparatus from high light levels by absorbing excess light and safely dissipating the energy as heat.

Accepted Answer

A) True 
 B)False

Question 7

In which way are photosynthesis and cellular respiration related?

Accepted Answer

A) They both store heat. 
B) They both release oxygen. 
C) They both store energy. 
D) They both use the waste material of the other. 
A) They both store heat. 
B) They both release oxygen. 
C) They both store energy. 
D) They both use the waste material of the other.

Question 8

Which of the following is characteristic of an object that is black in colour?

Accepted Answer

A) It does not absorb any wavelength. 
B) It absorbs all wavelengths. 
C) It reflects some wavelengths, but not all. 
D) It reflects all wavelengths. 
A) It does not absorb any wavelength. 
B) It absorbs all wavelengths. 
C) It reflects some wavelengths, but not all. 
D) It reflects all wavelengths.

Question 9

Which phrase expresses what photons lack versus what they have a precise amount of?

Accepted Answer

A) mass versus atoms 
B) atoms versus mass 
C) energy versus mass 
D) mass versus energy 
A) mass versus atoms 
B) atoms versus mass 
C) energy versus mass 
D) mass versus energy

Question 10

In what way are animals that are normally active during the daytime different than animals that are normally active at night?

Accepted Answer

A) Animals that are normally active during the daytime display worse visual acuity under high-light conditions compared to animals that are normally active during the night. 
B) Animals that are normally active during the daytime display improved visual acuity under high-light conditions compared to animals that are active during the night. 
C) Animals that are normally active at night display worse visual acuity under low-light conditions compared to animals that are normally active during the daytime. 
D) Animals that are normally active at night display improved visual acuity under low-light conditions compared to animals that are normally active during the daytime. 
A) Animals that are normally active during the daytime display worse visual acuity under high-light conditions compared to animals that are normally active during the night. 
B) Animals that are normally active during the daytime display improved visual acuity under high-light conditions compared to animals that are active during the night. 
C) Animals that are normally active at night display worse visual acuity under low-light conditions compared to animals that are normally active during the daytime. 
D) Animals that are normally active at night display improved visual acuity under low-light conditions compared to animals that are normally active during the daytime.

Question 11

In which form does energy enter the ecosystem?

Accepted Answer

A) chemical energy 
B) heat 
C) light energy 
D) magnetic energy 
A) chemical energy 
B) heat 
C) light energy 
D) magnetic energy

Question 12

A discrete particle of energy is called a photon.

Accepted Answer

A) True 
 B)False

Question 13

Which colour are hummingbirds attracted to?

Accepted Answer

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

Question 14

For a chlorophyll molecule, the electron involved in photon capture can exist in many excited states.

Accepted Answer

A) True 
 B)False

Question 15

Which wavelengths of the electromagnetic spectrum are the only ones used for photosynthesis?

Accepted Answer

A) from about 300 to 600 nm 
B) from about 400 to700 nm 
C) from about 500 to 800 nm 
D) from about 600 to 900 nm 
A) from about 300 to 600 nm 
B) from about 400 to700 nm 
C) from about 500 to 800 nm 
D) from about 600 to 900 nm

Question 16

Why can shorter wavelengths NOT be used by pigments?

Accepted Answer

A) They would oxidize the pigment. 
B) They would reduce the pigment. 
C) They would cause the excitation of electrons. 
D) They would cause electrons to gain insufficient energy. 
A) They would oxidize the pigment. 
B) They would reduce the pigment. 
C) They would cause the excitation of electrons. 
D) They would cause electrons to gain insufficient energy.

Question 17

When does the absorption of light occur in matter?

Accepted Answer

A) when the energy of the photon is transferred to a proton within a molecule 
B) when the energy of the photon is transferred to an electron within a molecule 
C) when the energy of the photon is transferred to an atom within a molecule 
D) when the energy of the photon is transferred to another photon within a molecule 
A) when the energy of the photon is transferred to a proton within a molecule 
B) when the energy of the photon is transferred to an electron within a molecule 
C) when the energy of the photon is transferred to an atom within a molecule 
D) when the energy of the photon is transferred to another photon within a molecule

Question 18

What enables the pigments indigo and carmine to capture light?

Accepted Answer

A) a single hydrogen bond 
B) a single bond of any element 
C) a conjugated system 
D) a double oxygen bond 
A) a single hydrogen bond 
B) a single bond of any element 
C) a conjugated system 
D) a double oxygen bond

Exam 1: Light and Life

When does phytochrome become active in seedlings?

The light sensor in a Chlamydomonas cell allows it to sense both light direction and light intensity. What do we call this light sensor?

How do bioluminescent animals deal with light?

Which pair is properly matched?

Which of the following is within the range of heat escaping from the surface of Earth?

Carotenoids are accessory pigments that can protect the photosynthetic apparatus from high light levels by absorbing excess light and safely dissipating the energy as heat.

In which way are photosynthesis and cellular respiration related?

Which of the following is characteristic of an object that is black in colour?

Which phrase expresses what photons lack versus what they have a precise amount of?

In what way are animals that are normally active during the daytime different than animals that are normally active at night?

In which form does energy enter the ecosystem?

A discrete particle of energy is called a photon.

Which colour are hummingbirds attracted to?

For a chlorophyll molecule, the electron involved in photon capture can exist in many excited states.

Which wavelengths of the electromagnetic spectrum are the only ones used for photosynthesis?

Why can shorter wavelengths NOT be used by pigments?

When does the absorption of light occur in matter?

What enables the pigments indigo and carmine to capture light?

The Cell: an Overview

Defining Life and Its Origins

Energy and Enzymes

Cell Membranes and Signalling

Cellular Respiration

Photosynthesis

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

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