Question 1

How are leaf-dropping in trees and colour change in the coat of the Artic fox related?

Accepted Answer

A) They are examples found in dark-dependent organisms. 
B) They are examples of adaptation to climate. 
C) They are examples found in organisms that live in the same area. 
D) They are examples of photoperiod-dependent phenomena. 
A) They are examples found in dark-dependent organisms. 
B) They are examples of adaptation to climate. 
C) They are examples found in organisms that live in the same area. 
D) They are examples of photoperiod-dependent phenomena.

Question 2

Which best describes photo-oxidative damage?

Accepted Answer

A) low energy environments associated with pigment molecules and excited electrons 
B) high energy environments associated with pigment molecules and excited electrons 
C) high energy environments associated with pigment molecules and non-excited electrons 
D) low energy environments associated with pigment molecules and non-excited electrons 
A) low energy environments associated with pigment molecules and excited electrons 
B) high energy environments associated with pigment molecules and excited electrons 
C) high energy environments associated with pigment molecules and non-excited electrons 
D) low energy environments associated with pigment molecules and non-excited electrons

Question 3

Explain why, after the Industrial Revolution in England, dark-coloured pepper moths became more abundant than the usual light-coloured moths, and why this case is often cited as an example of evolution by natural selection.

Accepted Answer

Before the Industrial Revolution, light-

Question 4

Which term refers to an electromagnetic radiation that is of the shortest wavelength and highest energy?

Accepted Answer

A) radio waves 
B) gamma rays 
C) UV light 
D) X-rays 
A) radio waves 
B) gamma rays 
C) UV light 
D) X-rays

Question 5

What is the light used for in Chlamydomonas?

Accepted Answer

A) as a source of information about the external environment 
B) as a source of information about the internal environment 
C) as a source of energy and as a source of information about the external environment 
D) as a source of energy and as a source of information about the internal environment 
A) as a source of information about the external environment 
B) as a source of information about the internal environment 
C) as a source of energy and as a source of information about the external environment 
D) as a source of energy and as a source of information about the internal environment

Question 6

Which term refers to an electromagnetic radiation that is of the longest wavelength and lowest energy?

Accepted Answer

A) radio waves 
B) gamma rays 
C) UV light 
D) X-rays 
A) radio waves 
B) gamma rays 
C) UV light 
D) X-rays

Question 7

Light serves two important functions for life on Earth. What is light's one source that sustains life, and what information does it provide organisms with?

Accepted Answer

A) energy; information about chemical life 
B) chemicals; information about physical life 
C) chemicals; information about surrounding life 
D) energy; information about physical life 
A) energy; information about chemical life 
B) chemicals; information about physical life 
C) chemicals; information about surrounding life 
D) energy; information about physical life

Question 8

The Sun converts over 4 million tonnes of matter into energy every minute.

Accepted Answer

A) True 
 B)False

Question 9

How did the eye that exists in humans and other animals appear?

Accepted Answer

A) It did not appear suddenly. 
B) It possibly appeared suddenly. 
C) It definitely appeared suddenly. 
D) It is not known. 
A) It did not appear suddenly. 
B) It possibly appeared suddenly. 
C) It definitely appeared suddenly. 
D) It is not known.

Question 10

What controls circadian rhythms, and which environment sets this clock?

Accepted Answer

A) an internal clock; an external environment 
B) an artificial clock; a natural environment 
C) an external clock; an internal environment 
D) a natural clock; an artificial environment 
A) an internal clock; an external environment 
B) an artificial clock; a natural environment 
C) an external clock; an internal environment 
D) a natural clock; an artificial environment

Question 11

What does light absorption trigger during phototaxis?

Accepted Answer

A) rapid changes in the concentrations of ions, including potassium and oxygen 
B) rapid changes in the concentrations of ions, including sodium and oxygen 
C) rapid changes in the concentrations of ions, including sodium and calcium 
D) rapid changes in the concentrations of ions, including potassium and calcium 
A) rapid changes in the concentrations of ions, including potassium and oxygen 
B) rapid changes in the concentrations of ions, including sodium and oxygen 
C) rapid changes in the concentrations of ions, including sodium and calcium 
D) rapid changes in the concentrations of ions, including potassium and calcium

Question 12

Bioluminescence found in marine bacteria is used for communication.

Accepted Answer

A) True 
 B)False

Question 13

When the plant is exposed to wavelengths of red light, phytochrome becomes inactive and initiates a signal transduction pathway.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following must occur in order for light to be used by an organism?

Accepted Answer

A) The light must be transmitted. 
B) The light must be absorbed. 
C) The light must be transferred. 
D) The light must be reflected. 
A) The light must be transmitted. 
B) The light must be absorbed. 
C) The light must be transferred. 
D) The light must be reflected.

Question 15

The reason why many animals are able to attract other organisms is because they use colour.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following characteristics of light is most commonly used for defining light as a portion of the electromagnetic spectrum?

Accepted Answer

A) the fact that all living organisms can detect it 
B) the fact that plants can detect it 
C) the fact that humans can detect it with their eyes 
D) the fact that non-human animals can detect it with their eyes 
A) the fact that all living organisms can detect it 
B) the fact that plants can detect it 
C) the fact that humans can detect it with their eyes 
D) the fact that non-human animals can detect it with their eyes

Question 17

What does photosynthesis capture?

Accepted Answer

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

Question 18

Which of the following is of particular concern for causing damage by light energy?

Accepted Answer

A) higher-energy gamma radiation 
B) lower-energy gamma radiation 
C) higher-energy ultraviolet radiation 
D) lower-energy ultraviolet radiation 
A) higher-energy gamma radiation 
B) lower-energy gamma radiation 
C) higher-energy ultraviolet radiation 
D) lower-energy ultraviolet radiation

Question 19

Explain how light pollution may affect natural populations. Give two examples.

Accepted Answer

The presence of artificial light (light

Question 20

Which two things are sensed by a Chlamydomonas cell's eyespot?

Accepted Answer

A) light location and colour 
B) light location and intensity 
C) light energy and colour 
D) light energy and intensity 
A) light location and colour 
B) light location and intensity 
C) light energy and colour 
D) light energy and intensity

Exam 1: Light and Life

How are leaf-dropping in trees and colour change in the coat of the Artic fox related?

Which best describes photo-oxidative damage?

Explain why, after the Industrial Revolution in England, dark-coloured pepper moths became more abundant than the usual light-coloured moths, and why this case is often cited as an example of evolution by natural selection.

Which term refers to an electromagnetic radiation that is of the shortest wavelength and highest energy?

What is the light used for in Chlamydomonas?

Which term refers to an electromagnetic radiation that is of the longest wavelength and lowest energy?

Light serves two important functions for life on Earth. What is light's one source that sustains life, and what information does it provide organisms with?

The Sun converts over 4 million tonnes of matter into energy every minute.

How did the eye that exists in humans and other animals appear?

What controls circadian rhythms, and which environment sets this clock?

What does light absorption trigger during phototaxis?

Bioluminescence found in marine bacteria is used for communication.

When the plant is exposed to wavelengths of red light, phytochrome becomes inactive and initiates a signal transduction pathway.

Which of the following must occur in order for light to be used by an organism?

The reason why many animals are able to attract other organisms is because they use colour.

Which of the following characteristics of light is most commonly used for defining light as a portion of the electromagnetic spectrum?

What does photosynthesis capture?

Which of the following is of particular concern for causing damage by light energy?

Explain how light pollution may affect natural populations. Give two examples.

Which two things are sensed by a Chlamydomonas cell's eyespot?

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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