Question 1

Which similarity is not shared between algae and plants?

Accepted Answer

A)  Algae are eukaryotes. 
B)  Algae are photoautotrophs. 
C)  Algae are producers. 
D)  Algae were once classified as plants. 
E)  Most algae have some form of locomotion. 
A)  Algae are eukaryotes. 
B)  Algae are photoautotrophs. 
C)  Algae are producers. 
D)  Algae were once classified as plants. 
E)  Most algae have some form of locomotion. E

Question 2

Which of these does not belong in any Domain of life?

Accepted Answer

A)  protozoans 
B)  algae 
C)  viruses 
D)  archaea 
E)  bacteria 
A)  protozoans 
B)  algae 
C)  viruses 
D)  archaea 
E)  bacteria C

Question 3

Your task as a researcher is to develop a new drug to prevent retrovirus infections in newly exposed individuals.Which of the means listed is likely to be the most effective?

Accepted Answer

A)  blocking enzyme action 
B)  destroying the viral genome 
C)  dissolving the capsid 
D)  preventing conjugation 
E)  disrupting the viral envelope 
A)  blocking enzyme action 
B)  destroying the viral genome 
C)  dissolving the capsid 
D)  preventing conjugation 
E)  disrupting the viral envelope A

Question 4

In the infamous anthrax attacks of 2001,several letters were received at the offices of two U.S.senators and various news media outlets.The letters contained dry granular or powdery material.Seventeen people who came into contact with the material from the letters suffered anthrax infections; five more died of anthrax.How could dried-out material cause anthrax?

Accepted Answer

A)  Anthrax bacteria are acellular infectious particles. When they came into contact with living hosts, they entered the hosts' cells, took over their metabolic machinery, and caused them to produce more bacteria. 
B)  Anthrax bacteria can form endospores under harsh environmental conditions. The material in the letters contained endospores of anthrax bacteria, which germinated and grew in the more favorable environment of the victim's bodies. 
C)  Anthrax bacteria can form endospores in order to reproduce. A few active bacteria in the letters started to produce enormous numbers of endospores upon contact with the anthrax victims. 
D)  Anthrax endospores are highly motile by flagella. When the endospores came into contact with human hosts, they swarmed into the bodies of their victims. 
E)  None of the choices are correct. 
A)  Anthrax bacteria are acellular infectious particles. When they came into contact with living hosts, they entered the hosts' cells, took over their metabolic machinery, and caused them to produce more bacteria. 
B)  Anthrax bacteria can form endospores under harsh environmental conditions. The material in the letters contained endospores of anthrax bacteria, which germinated and grew in the more favorable environment of the victim's bodies. 
C)  Anthrax bacteria can form endospores in order to reproduce. A few active bacteria in the letters started to produce enormous numbers of endospores upon contact with the anthrax victims. 
D)  Anthrax endospores are highly motile by flagella. When the endospores came into contact with human hosts, they swarmed into the bodies of their victims. 
E)  None of the choices are correct.

Question 5

Which archaea use a pigment related to the rhodopsin in our eyes to absorb solar energy and pump chloride ions?

Accepted Answer

A)  methanogens 
B)  halophiles 
C)  thermoacidophiles 
D)  alkaliphiles 
E)  psychrophiles 
A)  methanogens 
B)  halophiles 
C)  thermoacidophiles 
D)  alkaliphiles 
E)  psychrophiles

Question 6

Which of the following statements is incorrect for all viruses?

Accepted Answer

A)  Viruses have an inner core of nucleic acid. 
B)  Viruses have a protein capsid. 
C)  Viruses are obligate intracellular parasites. 
D)  Viruses have envelopes. 
E)  Viral genomes may consist of either DNA or RNA. 
A)  Viruses have an inner core of nucleic acid. 
B)  Viruses have a protein capsid. 
C)  Viruses are obligate intracellular parasites. 
D)  Viruses have envelopes. 
E)  Viral genomes may consist of either DNA or RNA.

Question 7

Which of these is mismatched?

Accepted Answer

A)  Paramecium - ciliate 
B)  Chlamydomonas - green alga 
C)  Plasmodium - sporozoan 
D)  Giardia - zooflagellate 
E)  Salmonella - amoeba 
A)  Paramecium - ciliate 
B)  Chlamydomonas - green alga 
C)  Plasmodium - sporozoan 
D)  Giardia - zooflagellate 
E)  Salmonella - amoeba

Question 8

What is the main structural difference between a virus and a viroid?

Accepted Answer

A)  viroids do not have a capsid covering 
B)  viruses do not have a capsid covering 
C)  viroids contain DNA while viruses do not 
D)  Viruses contain RNA while viroids do not 
E)  there is no structural difference between the two 
A)  viroids do not have a capsid covering 
B)  viruses do not have a capsid covering 
C)  viroids contain DNA while viruses do not 
D)  Viruses contain RNA while viroids do not 
E)  there is no structural difference between the two

Question 9

Which group of algae will have calcium carbonate within their cell walls?

Accepted Answer

A)  red algae 
B)  green algae 
C)  brown algae 
D)  diatoms 
E)  filamentous algae 
A)  red algae 
B)  green algae 
C)  brown algae 
D)  diatoms 
E)  filamentous algae

Question 10

Without bacteria in the environment

Accepted Answer

A)  adequate amounts of carbon would not be available to living organisms. 
B)  plants would not be able to grow due to lack of nitrogen. 
C)  bioremediation would have limited use as a tool to clean up pollutants. 
D)  there would be a shortage of decomposer organisms. 
E)  All of the choices are correct. 
A)  adequate amounts of carbon would not be available to living organisms. 
B)  plants would not be able to grow due to lack of nitrogen. 
C)  bioremediation would have limited use as a tool to clean up pollutants. 
D)  there would be a shortage of decomposer organisms. 
E)  All of the choices are correct.

Question 11

Which group of organisms are viroids,instead of viruses,most likely to parasitize?

Accepted Answer

A)  plants 
B)  bacteria 
C)  fish 
D)  fungi 
E)  cattle 
A)  plants 
B)  bacteria 
C)  fish 
D)  fungi 
E)  cattle

Question 12

Pathogens are disease-causing

Accepted Answer

A)  bacteria only. 
B)  viruses only. 
C)  protists only. 
D)  viroids only. 
E)  microbes. 
A)  bacteria only. 
B)  viruses only. 
C)  protists only. 
D)  viroids only. 
E)  microbes.

Question 13

Viroids and prions are alike in that both are infectious

Accepted Answer

A)  cell types. 
B)  proteins. 
C)  molecules. 
D)  DNA. 
E)  RNA. 
A)  cell types. 
B)  proteins. 
C)  molecules. 
D)  DNA. 
E)  RNA.

Question 14

One group of protozoans which are non-motile,produce spores,and have disease-causing species is the

Accepted Answer

A)  foraminiferans. 
B)  trypanosomes. 
C)  sporozoans. 
D)  amoeboids. 
E)  radiolarians. 
A)  foraminiferans. 
B)  trypanosomes. 
C)  sporozoans. 
D)  amoeboids. 
E)  radiolarians.

Question 15

Which of the following is not caused by an emerging virus?

Accepted Answer

A)  acquired immunodeficiency syndrome (AIDS) 
B)  chickenpox 
C)  bird flu 
D)  ebola 
E)  severe acute respiratory syndrome (SARS) 
A)  acquired immunodeficiency syndrome (AIDS) 
B)  chickenpox 
C)  bird flu 
D)  ebola 
E)  severe acute respiratory syndrome (SARS)

Question 16

Which of the following contains no photosynthetic organisms?

Accepted Answer

A)  protists 
B)  bacteria 
C)  archaea 
D)  zooflagellates 
E)  prokaryotes 
A)  protists 
B)  bacteria 
C)  archaea 
D)  zooflagellates 
E)  prokaryotes

Question 17

Which of the following groups has at least some members with cell walls?

Accepted Answer

A)  protists only 
B)  bacteria only 
C)  archaea only 
D)  prokaryotes only 
E)  protists, bacteria, and archaea 
A)  protists only 
B)  bacteria only 
C)  archaea only 
D)  prokaryotes only 
E)  protists, bacteria, and archaea

Question 18

Which of the following are acellular?

Accepted Answer

A)  prions 
B)  protozoans 
C)  archaea 
D)  algae 
E)  bacteria 
A)  prions 
B)  protozoans 
C)  archaea 
D)  algae 
E)  bacteria

Question 19

A virus is specific to a particular type of host cell because

Accepted Answer

A)  only certain hosts enter the environment inhabited by the virus. 
B)  not every virus contains metabolic machinery which can replace that of the host cell. 
C)  a glycoprotein spike or a portion of the capsid adheres to a receptor on the surface of a compatible host cell. 
D)  a host cell must be malfunctioning, or a virus cannot infect it. 
E)  the genome of the virus must be similar to that of its potential host. 
A)  only certain hosts enter the environment inhabited by the virus. 
B)  not every virus contains metabolic machinery which can replace that of the host cell. 
C)  a glycoprotein spike or a portion of the capsid adheres to a receptor on the surface of a compatible host cell. 
D)  a host cell must be malfunctioning, or a virus cannot infect it. 
E)  the genome of the virus must be similar to that of its potential host.

Question 20

What feature enables the paramecium to move?

Accepted Answer

A)  cilia 
B)  contractile vacuole 
C)  flagella 
D)  nucleus 
E)  pseudopodia 
A)  cilia 
B)  contractile vacuole 
C)  flagella 
D)  nucleus 
E)  pseudopodia

Exam 17: The Microorganisms: Viruses, bacteria, and Protists

Which similarity is not shared between algae and plants?

Which of these does not belong in any Domain of life?

Your task as a researcher is to develop a new drug to prevent retrovirus infections in newly exposed individuals.Which of the means listed is likely to be the most effective?

Which archaea use a pigment related to the rhodopsin in our eyes to absorb solar energy and pump chloride ions?

Which of the following statements is incorrect for all viruses?

Which of these is mismatched?

What is the main structural difference between a virus and a viroid?

Which group of algae will have calcium carbonate within their cell walls?

Without bacteria in the environment

Which group of organisms are viroids,instead of viruses,most likely to parasitize?

Pathogens are disease-causing

Viroids and prions are alike in that both are infectious

One group of protozoans which are non-motile,produce spores,and have disease-causing species is the

Which of the following is not caused by an emerging virus?

Which of the following contains no photosynthetic organisms?

Which of the following groups has at least some members with cell walls?

Which of the following are acellular?

A virus is specific to a particular type of host cell because

What feature enables the paramecium to move?

Biology: The Science of Life

The Chemical Basis of Life

The Organic Molecules of Life

Inside the Cell

The Dynamic Cell

Energy for Life

Energy for Cells

Cellular Reproduction

Meiosis and the Genetic Basis of Sexual Reproduction

Patterns of Inheritance

DNA Biology

Biotechnology and Genomics

Genetic Counseling

Darwin and Evolution

Evolution on a Small Scale

Evolution on a Large Scale

Land Environment: Plants and Fungi

Both Water and Land: Animals

Plant Anatomy and Growth

Plant Responses and Reproduction

Being Organized and Steady

The Transport Systems

The Maintenance Systems

Human Nutrition

Defenses Against Disease

The Control Systems

Sensory Input and Motor Output

Reproduction and Embryonic Development

Ecology and Populations

Communities and Ecosystems

Human Impact on the Biosphere

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