Question 1

What is the function of reverse transcriptase?

Accepted Answer

A) to synthesize viral protease 
B) to make RNA from DNA 
C) to make DNA from RNA 
D) to assemble HIV protein spikes 
A) to synthesize viral protease 
B) to make RNA from DNA 
C) to make DNA from RNA 
D) to assemble HIV protein spikes

Question 2

In which major family of animal viruses is the virus that causes influenza found?

Accepted Answer

A) in adenovirus 
B) in papillomavirus 
C) in flavivirus 
D) in orthomyxovirus 
A) in adenovirus 
B) in papillomavirus 
C) in flavivirus 
D) in orthomyxovirus

Question 3

In which viruses are envelopes most commonly found?

Accepted Answer

A) in viruses of animals 
B) in viruses of bacteria 
C) in viruses of plants 
D) in viruses of archaea 
A) in viruses of animals 
B) in viruses of bacteria 
C) in viruses of plants 
D) in viruses of archaea

Question 4

Polio virus is often used in genetic research.

Accepted Answer

A) True 
 B)False

Question 5

All enveloped animal viruses have protein spikes.

Accepted Answer

A) True 
 B)False

Question 6

Creutzfeldt-Jakob disease (CJD) is a fatal prion infection in humans.

Accepted Answer

A) True 
 B)False

Question 7

Which describes the latent phase of an animal virus?

Accepted Answer

A) the time it takes to replicate the viral genome 
B) the equivalent of the lysogenic cycle of some bacteriophages 
C) the period from infection to host cell lysis 
D) the time it takes to assemble one viral particle 
A) the time it takes to replicate the viral genome 
B) the equivalent of the lysogenic cycle of some bacteriophages 
C) the period from infection to host cell lysis 
D) the time it takes to assemble one viral particle

Question 8

-In the figure, which number identifies the structure that enters the host cell?

Accepted Answer

A) 5 
B) 3 
C) 2 
D) 1 
A) 5 
B) 3 
C) 2 
D) 1

Question 9

In which major family of animal viruses is the virus that causes AIDS found?

Accepted Answer

A) in orthomyxovirus 
B) in adenovirus 
C) in flavivirus 
D) in retrovirus 
A) in orthomyxovirus 
B) in adenovirus 
C) in flavivirus 
D) in retrovirus

Question 10

Which of the following viruses has a double stranded DNA genome?

Accepted Answer

A) the flavivirus 
B) the retrovirus 
C) the orthomyxovirus 
D) the poxvirus 
A) the flavivirus 
B) the retrovirus 
C) the orthomyxovirus 
D) the poxvirus

Question 11

How are viruses different from bacteria?

Accepted Answer

A) They have a single type of nucleic acid. 
B) They may be pathogenic to humans. 
C) They do not contain protein. 
D) They are too small to be seen with the unaided eye. 
A) They have a single type of nucleic acid. 
B) They may be pathogenic to humans. 
C) They do not contain protein. 
D) They are too small to be seen with the unaided eye.

Question 12

Viral progeny are synthesized as small particles that grow to adult size.

Accepted Answer

A) True 
 B)False

Question 13

In which cycle does the virus kill the infected host cell?

Accepted Answer

A) in the lytic cycle 
B) in the phagocytic cycle 
C) in the endocytic cycle 
D) in the lysogenic cycle 
A) in the lytic cycle 
B) in the phagocytic cycle 
C) in the endocytic cycle 
D) in the lysogenic cycle

Question 14

Viral genomes are difficult to sequence.

Accepted Answer

A) True 
 B)False

Question 15

Which prion disease affects sheep?

Accepted Answer

A) kuru 
B) scrapie 
C) muru 
D) bovine spongiform encephalopathy 
A) kuru 
B) scrapie 
C) muru 
D) bovine spongiform encephalopathy

Question 16

-In the figure, which number identifies the viral genome?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
A) 2 
B) 3 
C) 4 
D) 5

Question 17

-In the figure, which number identifies the sheath?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
A) 2 
B) 3 
C) 4 
D) 5

Question 18

Animal viruses without envelopes enter the host cell via fusion with the cell membrane.

Accepted Answer

A) True 
 B)False

Question 19

-In the figure, which number identifies the coat?

Accepted Answer

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

Question 20

In which major family of animal viruses is the virus that causes polio found?

Accepted Answer

A) in orthomyxovirus 
B) in enterovirus 
C) in adenovirus 
D) in retrovirus 
A) in orthomyxovirus 
B) in enterovirus 
C) in adenovirus 
D) in retrovirus

Exam 23: Viruses, Viroids, and Prions: Infectious Biological Particles

What is the function of reverse transcriptase?

In which major family of animal viruses is the virus that causes influenza found?

In which viruses are envelopes most commonly found?

Polio virus is often used in genetic research.

All enveloped animal viruses have protein spikes.

Creutzfeldt-Jakob disease (CJD) is a fatal prion infection in humans.

Which describes the latent phase of an animal virus?

-In the figure, which number identifies the structure that enters the host cell?

In which major family of animal viruses is the virus that causes AIDS found?

Which of the following viruses has a double stranded DNA genome?

How are viruses different from bacteria?

Viral progeny are synthesized as small particles that grow to adult size.

In which cycle does the virus kill the infected host cell?

Viral genomes are difficult to sequence.

Which prion disease affects sheep?

-In the figure, which number identifies the viral genome?

-In the figure, which number identifies the sheath?

Animal viruses without envelopes enter the host cell via fusion with the cell membrane.

-In the figure, which number identifies the coat?

In which major family of animal viruses is the virus that causes polio found?

Light and Life

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

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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