Question 1

Which of the following is the purpose of the functional photoreceptors in a blind mole rat?

Accepted Answer

A) They transmit light form the environment. 
B) They absorb light from the environment. 
C) They properly set the biological clock. 
D) They properly set the position of the animal. 
A) They transmit light form the environment. 
B) They absorb light from the environment. 
C) They properly set the biological clock. 
D) They properly set the position of the animal.

Question 2

Absorption of a photon of light causes the retinal pigment molecule to change shape.

Accepted Answer

A) True 
 B)False

Question 3

What is the purpose of the functional photoreceptors in mole rats, even though the image-forming part of the brain is dramatically reduced?

Accepted Answer

A) It allows them to set their biological clock properly, which is necessary for reproduction. 
B) It allows them to hunt successfully. 
C) It allows them to see other individuals in their group properly. 
D) It allows them to set their biological clock properly, which is necessary for the proper regulation of circadian rhythm. 
A) It allows them to set their biological clock properly, which is necessary for reproduction. 
B) It allows them to hunt successfully. 
C) It allows them to see other individuals in their group properly. 
D) It allows them to set their biological clock properly, which is necessary for the proper regulation of circadian rhythm.

Question 4

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 5

We "see" not with our eyes but rather with our brain.

Accepted Answer

A) True 
 B)False

Question 6

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 7

In what way are eyes and eyespots similar to each other?

Accepted Answer

A) They are both simple. 
B) They both sense light. 
C) They are both big. 
D) They both sense the absence of light. 
A) They are both simple. 
B) They both sense light. 
C) They are both big. 
D) They both sense the absence of light.

Question 8

The UV light affects the nucleotide bases of DNA. What can UV light form, and how many neighbouring bases of DNA become covalently linked in this situation?

Accepted Answer

A) It can form a primer with two bases linked. 
B) It can form a dimer with one base linked. 
C) It can form a trimer with three bases linked. 
D) It can form a dimer with two bases linked. 
A) It can form a primer with two bases linked. 
B) It can form a dimer with one base linked. 
C) It can form a trimer with three bases linked. 
D) It can form a dimer with two bases linked.

Question 9

What is the importance of the pigment melanin in humans?

Accepted Answer

A) It prevents destruction of vitamin D caused by UV light. 
B) It allows formation of vitamin B caused by UV light. 
C) It prevents DNA damage by absorbing UV light. 
D) It prevents DNA damage by reflecting UV light. 
A) It prevents destruction of vitamin D caused by UV light. 
B) It allows formation of vitamin B caused by UV light. 
C) It prevents DNA damage by absorbing UV light. 
D) It prevents DNA damage by reflecting UV light.

Question 10

What does the conjugated system arrangement in pigments result in?

Accepted Answer

A) delocalization of protons 
B) localization of electrons 
C) delocalization of electrons 
D) localization of protons 
A) delocalization of protons 
B) localization of electrons 
C) delocalization of electrons 
D) localization of protons

Question 11

All animals see very well under dim light conditions.

Accepted Answer

A) True 
 B)False

Question 12

Why do animals in deep ocean depths live in complete darkness?

Accepted Answer

A) because 100% of the ocean is at a depth where no light penetrates 
B) because over 90% of the ocean is at a depth where no light penetrates 
C) because over 80% of the ocean is at a depth where no light penetrates 
D) because over 70% of the ocean is at a depth where no light penetrates 
A) because 100% of the ocean is at a depth where no light penetrates 
B) because over 90% of the ocean is at a depth where no light penetrates 
C) because over 80% of the ocean is at a depth where no light penetrates 
D) because over 70% of the ocean is at a depth where no light penetrates

Question 13

Phytochrome is present in the cytosol of all plant cells.

Accepted Answer

A) True 
 B)False

Question 14

A plot of the effectiveness of different wavelengths of light on a biological process is called an action spectrum.

Accepted Answer

A) True 
 B)False

Question 15

Bioluminescent organisms do NOT need to be exposed to light at all.

Accepted Answer

A) True 
 B)False

Question 16

Which phrase best explains why some photosynthesis still occurs under green light?

Accepted Answer

A) because chlorophyll absorbs red and blue light 
B) because many different pigments are involved in photosynthesis 
C) because chlorophyll absorbs green light 
D) because chlorophyll is green in colour 
A) because chlorophyll absorbs red and blue light 
B) because many different pigments are involved in photosynthesis 
C) because chlorophyll absorbs green light 
D) because chlorophyll is green in colour

Question 17

Why is the work of Sir Isaac Newton considered so revolutionary?

Accepted Answer

A) because he promoted only theory, but not experimental work 
B) because he promoted only experimental work, but not theory 
C) because he worked during a period when religion and superstition were dominant 
D) because he worked during a period when religion and superstition were replaced by reason and knowledge 
A) because he promoted only theory, but not experimental work 
B) because he promoted only experimental work, but not theory 
C) because he worked during a period when religion and superstition were dominant 
D) because he worked during a period when religion and superstition were replaced by reason and knowledge

Question 18

Some animals camouflage themselves by having the patterns difficult to see when they do not move.

Accepted Answer

A) True 
 B)False

Question 19

Although they are now blind, mole rats had ancestors with functional eyes.

Accepted Answer

A) True 
 B)False

Question 20

Which best explains photomorphogenesis?

Accepted Answer

A) the normal developmental process activated when seedlings are exposed to heat 
B) the normal developmental process activated when seedlings are exposed to light 
C) the normal developmental process activated when seedlings are exposed to cold 
D) the normal developmental process activated when seedlings are exposed to salinity 
A) the normal developmental process activated when seedlings are exposed to heat 
B) the normal developmental process activated when seedlings are exposed to light 
C) the normal developmental process activated when seedlings are exposed to cold 
D) the normal developmental process activated when seedlings are exposed to salinity

Exam 1: Light and Life

Which of the following is the purpose of the functional photoreceptors in a blind mole rat?

Absorption of a photon of light causes the retinal pigment molecule to change shape.

What is the purpose of the functional photoreceptors in mole rats, even though the image-forming part of the brain is dramatically reduced?

What is the cause of blindness in mole rats?

We "see" not with our eyes but rather with our brain.

Which of the following describes a red pigment?

In what way are eyes and eyespots similar to each other?

The UV light affects the nucleotide bases of DNA. What can UV light form, and how many neighbouring bases of DNA become covalently linked in this situation?

What is the importance of the pigment melanin in humans?

What does the conjugated system arrangement in pigments result in?

All animals see very well under dim light conditions.

Why do animals in deep ocean depths live in complete darkness?

Phytochrome is present in the cytosol of all plant cells.

A plot of the effectiveness of different wavelengths of light on a biological process is called an action spectrum.

Bioluminescent organisms do NOT need to be exposed to light at all.

Which phrase best explains why some photosynthesis still occurs under green light?

Why is the work of Sir Isaac Newton considered so revolutionary?

Some animals camouflage themselves by having the patterns difficult to see when they do not move.

Although they are now blind, mole rats had ancestors with functional eyes.

Which best explains photomorphogenesis?

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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