Question 1

Why is chlorophyll green in colour?

Accepted Answer

A)  It can reflect the green wavelength. 
B)  It cannot reflect the red wavelength. 
C)  It cannot reflect the green wavelength. 
D)  It can reflect the red wavelength. 
A)  It can reflect the green wavelength. 
B)  It cannot reflect the red wavelength. 
C)  It cannot reflect the green wavelength. 
D)  It can reflect the red wavelength.

Question 2

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 3

What is the cause of blindness in mole rats?

Accepted Answer

A)  They live in dry areas that do not provide enough moisture. 
B)  They live in a group and do not need to see. 
C)  They live in the light and are blinded by it. 
D)  They live in underground darkness. 
A)  They live in dry areas that do not provide enough moisture. 
B)  They live in a group and do not need to see. 
C)  They live in the light and are blinded by it. 
D)  They live in underground darkness.

Question 4

Quorum sensing is now believed to be the basis for what are termed "milky seas."

Accepted Answer

A) True 
 B)False

Question 5

All animals see very well under dim light conditions.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following are within the range of most radiation reaching the surface of Earth?

Accepted Answer

A)  near-infrared and infrared radiation 
B)  infrared radiation and microwaves 
C)  ultraviolet and near-infrared radiation 
D)  ultraviolet radiation and X-rays 
A)  near-infrared and infrared radiation 
B)  infrared radiation and microwaves 
C)  ultraviolet and near-infrared radiation 
D)  ultraviolet radiation and X-rays

Question 7

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 8

Which of the following describes a red pigment?

Accepted Answer

A)  It can absorb the green wavelength. 
B)  It cannot absorb the red wavelength. 
C)  It cannot absorb the green wavelength. 
D)  It can absorb the red wavelength. 
A)  It can absorb the green wavelength. 
B)  It cannot absorb the red wavelength. 
C)  It cannot absorb the green wavelength. 
D)  It can absorb the red wavelength.

Question 9

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

Question 10

Which light transmittance decreases when the increased opaqueness of the lens absorbs certain wavelengths of light?

Accepted Answer

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

Question 11

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 12

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

Accepted Answer

A) True 
 B)False

Question 13

When light hits a pigment, how many electrons are excited by a single photon?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 14

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 15

Ultraviolet light does not harm DNA.

Accepted Answer

A) True 
 B)False

Question 16

Which aspect of pigments makes them efficient in capturing light?

Accepted Answer

A)  They all share a region where hydrogen atoms are covalently bonded to each other with single bonds. 
B)  They all share a region where hydrogen atoms are covalently bonded to each other with alternating single and double bonds. 
C)  They all share a region where carbon atoms are covalently bonded to each other with alternating single and double bonds. 
D)  They all share a region where carbon atoms are covalently bonded to each other with double bonds. 
A)  They all share a region where hydrogen atoms are covalently bonded to each other with single bonds. 
B)  They all share a region where hydrogen atoms are covalently bonded to each other with alternating single and double bonds. 
C)  They all share a region where carbon atoms are covalently bonded to each other with alternating single and double bonds. 
D)  They all share a region where carbon atoms are covalently bonded to each other with double bonds.

Question 17

Suppose that the suprachiasmatic nucleus within the brain is damaged. Which of the following is the most likely to occur?

Accepted Answer

A)  The organism would not be able to control its circadian rhythm. 
B)  The organism would die. 
C)  The organism would not experience any change. 
D)  The organism would not be able to move. 
A)  The organism would not be able to control its circadian rhythm. 
B)  The organism would die. 
C)  The organism would not experience any change. 
D)  The organism would not be able to move.

Question 18

What are opsins and what are they a part of?

Accepted Answer

A)  membrane lipids that form a complex with a retinal molecule at the centre 
B)  membrane proteins that form a complex with a retinal molecule at the centre 
C)  retinal molecules that form a complex with membrane proteins at the centre 
D)  retinal molecules that form a complex with membrane lipids at the centre 
A)  membrane lipids that form a complex with a retinal molecule at the centre 
B)  membrane proteins that form a complex with a retinal molecule at the centre 
C)  retinal molecules that form a complex with membrane proteins at the centre 
D)  retinal molecules that form a complex with membrane lipids at the centre

Question 19

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 20

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

Exam 1: Light and Life

Why is chlorophyll green in colour?

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

What is the cause of blindness in mole rats?

Quorum sensing is now believed to be the basis for what are termed "milky seas."

All animals see very well under dim light conditions.

Which of the following are within the range of most radiation reaching the surface of Earth?

What is the light used for in Chlamydomonas?

Which of the following describes a red pigment?

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

Which light transmittance decreases when the increased opaqueness of the lens absorbs certain wavelengths of light?

When does the absorption of light occur in matter?

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

When light hits a pigment, how many electrons are excited by a single photon?

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

Ultraviolet light does not harm DNA.

Which aspect of pigments makes them efficient in capturing light?

Suppose that the suprachiasmatic nucleus within the brain is damaged. Which of the following is the most likely to occur?

What are opsins and what are they a part of?

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

Which pair is properly matched?

The Cell: an Overview

Energy and Enzymes

Cell Membranes and Signaling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

The Chromosomal Basis of Mendelian Inheritance

Genetic Linkage, Sex-Linkage, and Other Non-Mendelian Inheritance Mechanisms

DNA Structure, Replication, and Repair

Gene Structure Expression, and Mutation

Regulation of Gene Expression

Dna Technologies

Genomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Speciation and Macroevolution

Systematics and Phylogenetics: Revealing the Tree of Life

Humans and Evolution

Defining Life and Its Origins

Viruses, Viroids, and Prions: Infectious Biological Particles

Bacteria and Archaea

Protists

Fungi

Plants

Animals

Conservation of Biodiversity

Population Ecology

Species Interactions and Community Ecology

Ecosystems

Animal Behaviour

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

Animal Nutrition

Gas Exchange: the Respiratory System

Internal Transport: the Circulatory System

Regulation of the Internal Environment: Water, Solutes, and Temperature

Control of Animal Processes: Endocrine Control

Animal Reproduction

Control of Animal Processes: Neural Control

Muscles, Skeletons, and Body Movements

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