Question 1

The agent that causes hepatitis D is a(n) viroid that can only reproduce when the hepatitis B virus is also present. 
____________________

Accepted Answer

A) True 
 B)False

Question 2

Describe the theory that attempts to explain the species specificity of viruses to their hosts.

Accepted Answer

Concepts to Consider: Viruses may have c

Question 3

Who is credited with the discovery of prions as a new biological principle of infection?

Accepted Answer

A)  Anton van Leeuwenhoek 
B)  Dmitrii Ivanowsky 
C)  Stanley Prusiner 
D)  Stanley Brenner 
E)  Carl Woese 
A)  Anton van Leeuwenhoek 
B)  Dmitrii Ivanowsky 
C)  Stanley Prusiner 
D)  Stanley Brenner 
E)  Carl Woese

Question 4

Match between columns
                        Premises: papovaviruses
herpesviruses
togaviruses
retroviruses
orthomyxoviruses

Accepted Answer

The Answer of ssRNA that serves as template for mRNA is...

Question 5

Which statement describes a temperate virus?

Accepted Answer

A)  A temperate virus undergoes a lytic cycle. 
B)  A temperate virus is considered virulent. 
C)  A temperate virus does not always destroy its host. 
D)  A temperate virus does not undergo a lysogenic cycle. 
E)  A temperate virus always destroys their host immediately. 
A)  A temperate virus undergoes a lytic cycle. 
B)  A temperate virus is considered virulent. 
C)  A temperate virus does not always destroy its host. 
D)  A temperate virus does not undergo a lysogenic cycle. 
E)  A temperate virus always destroys their host immediately.

Question 6

Viral infections in humans spread via the circulatory system. Viral infections in plants spread from cell to cell via:

Accepted Answer

A)  pili. 
B)  endocytosis. 
C)  infected seeds. 
D)  plasmodesmata. 
E)  transformation. 
A)  pili. 
B)  endocytosis. 
C)  infected seeds. 
D)  plasmodesmata. 
E)  transformation.

Question 7

What is the purpose of phage therapy?

Accepted Answer

A)  To supplement gene therapy 
B)  To build antibiotic resistance 
C)  To target and destroy cancer cells 
D)  To improve replication of other viruses 
E)  To target specific bacteria in the body and destroy them 
A)  To supplement gene therapy 
B)  To build antibiotic resistance 
C)  To target and destroy cancer cells 
D)  To improve replication of other viruses 
E)  To target specific bacteria in the body and destroy them

Question 8

Viroids cause a variety of plant diseases and are composed only of:

Accepted Answer

A)  strands of RNA. 
B)  strands of DNA. 
C)  protein coats. 
D)  peptidoglycan. 
E)  a capsid. 
A)  strands of RNA. 
B)  strands of DNA. 
C)  protein coats. 
D)  peptidoglycan. 
E)  a capsid.

Question 9

Which statement describes a virulent phage?

Accepted Answer

A)  A virulent phage infects viruses. 
B)  A virulent phage infects prions. 
C)  A virulent phage infects virions. 
D)  A virulent phage destroys bacteria. 
E)  A virulent phage infects but does not destroy bacteria. 
A)  A virulent phage infects viruses. 
B)  A virulent phage infects prions. 
C)  A virulent phage infects virions. 
D)  A virulent phage destroys bacteria. 
E)  A virulent phage infects but does not destroy bacteria.

Question 10

What is the correct unit of measurement for the size of most viruses?

Accepted Answer

A)  picometers 
B)  nanometers 
C)  micrometers 
D)  centimeters 
E)  decimeters 
A)  picometers 
B)  nanometers 
C)  micrometers 
D)  centimeters 
E)  decimeters

Question 11

The immunodeficiency virus that causes acquired immunodeficiency syndrome is a(n) enveloped virus. 
____________________

Accepted Answer

A) True 
 B)False

Exam 24: Viruses and Subviral Agents

The agent that causes hepatitis D is a(n) viroid that can only reproduce when the hepatitis B virus is also present. ____________________

Describe the theory that attempts to explain the species specificity of viruses to their hosts.

Who is credited with the discovery of prions as a new biological principle of infection?

Which statement describes a temperate virus?

Viral infections in humans spread via the circulatory system. Viral infections in plants spread from cell to cell via:

What is the purpose of phage therapy?

Viroids cause a variety of plant diseases and are composed only of:

Which statement describes a virulent phage?

What is the correct unit of measurement for the size of most viruses?

The immunodeficiency virus that causes acquired immunodeficiency syndrome is a(n) enveloped virus. ____________________

A View of Life

Atoms and Molecules the Chemical Basis of Life

The Chemistry of Life Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp Energy-Releasing Pathways

Photosynthesis Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity Systematics

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure Growth and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function an Introduction

Protection Support and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

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