Question 1

Protists can be

Accepted Answer

A)  unicellular only. 
B)  unicellular or colonial, but not multicellular. 
C)  colonial only. 
D)  colonial or multicellular, but not unicellular. 
E)  unicellular, colonial, or multicellular. 
A)  unicellular only. 
B)  unicellular or colonial, but not multicellular. 
C)  colonial only. 
D)  colonial or multicellular, but not unicellular. 
E)  unicellular, colonial, or multicellular.

Question 2

Which sporozoan characteristic is most consistent with a parasitic lifestyle?

Accepted Answer

A)  lack of motility 
B)  chemoheterotrophism 
C)  unicellular 
D)  lack of light-absorbing pigment 
E)  eukaryotic 
A)  lack of motility 
B)  chemoheterotrophism 
C)  unicellular 
D)  lack of light-absorbing pigment 
E)  eukaryotic

Question 3

Which type of archaea use a pigment related to the rhodopsin, a pigment found in human 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 4

The _____ of a virus is enclosed by a _____ capsid.

Accepted Answer

A)  nucleic acid; protein 
B)  membrane; protein 
C)  nucleic acid; membrane 
D)  protein; nucleic acid 
E)  RNA; DNA 
A)  nucleic acid; protein 
B)  membrane; protein 
C)  nucleic acid; membrane 
D)  protein; nucleic acid 
E)  RNA; DNA

Question 5

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 6

Which of the following does not provide support for the endosymbiotic hypothesis?

Accepted Answer

A)  Double membranes are around mitochondria and chloroplasts. 
B)  Mitochondria and chloroplasts have their own genomes. 
C)  Mitochondria and chloroplasts can synthesize proteins. 
D)  Mitochondria and chloroplasts contain genes that are strikingly similar to bacterial genes. 
E)  Mitochondria and chloroplasts contribute to different metabolic processes in the eukaryotic cell. 
A)  Double membranes are around mitochondria and chloroplasts. 
B)  Mitochondria and chloroplasts have their own genomes. 
C)  Mitochondria and chloroplasts can synthesize proteins. 
D)  Mitochondria and chloroplasts contain genes that are strikingly similar to bacterial genes. 
E)  Mitochondria and chloroplasts contribute to different metabolic processes in the eukaryotic cell.

Question 7

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

Question 8

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.

Question 9

A viroid is a naked, infectious _____ molecule.

Accepted Answer

A)  protein 
B)  DNA 
C)  RNA 
D)  fatty acid 
E)  enzyme 
A)  protein 
B)  DNA 
C)  RNA 
D)  fatty acid 
E)  enzyme

Question 10

Which group of organisms are viroids not 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 11

Which is the correct order of events in the lytic cycle of a bacteriophage?

Accepted Answer

A)  attachment - penetration - biosynthesis - maturation - release 
B)  integration - penetration - biosynthesis - maturation - release 
C)  attachment - integration - biosynthesis - maturation - release 
D)  attachment - biosynthesis - maturation - release 
E)  penetration - attachment - biosynthesis - release - maturation 
A)  attachment - penetration - biosynthesis - maturation - release 
B)  integration - penetration - biosynthesis - maturation - release 
C)  attachment - integration - biosynthesis - maturation - release 
D)  attachment - biosynthesis - maturation - release 
E)  penetration - attachment - biosynthesis - release - maturation

Question 12

Naked strands of RNA not covered by a capsid are

Accepted Answer

A)  viroids. 
B)  archaea. 
C)  prions. 
D)  retroviruses. 
E)  viruses. 
A)  viroids. 
B)  archaea. 
C)  prions. 
D)  retroviruses. 
E)  viruses.

Question 13

Some species of pathogenic bacteria are able to attack specific tissues in the human body due to structures called

Accepted Answer

A)  adhesion factors. 
B)  bioremediaton factors. 
C)  flagella. 
D)  conjugation pili. 
E)  cilia. 
A)  adhesion factors. 
B)  bioremediaton factors. 
C)  flagella. 
D)  conjugation pili. 
E)  cilia.

Question 14

What would you call a long chain of Streptococcus bacterial cells that are spherical in shape?

Accepted Answer

A)  Streptococcus 
B)  Staphylococcus 
C)  Streptobacillus 
D)  Diplococcus 
E)  Streptospirillum 
A)  Streptococcus 
B)  Staphylococcus 
C)  Streptobacillus 
D)  Diplococcus 
E)  Streptospirillum

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

Protists can be

Which sporozoan characteristic is most consistent with a parasitic lifestyle?

Which type of archaea use a pigment related to the rhodopsin, a pigment found in human eyes, to absorb solar energy and pump chloride ions?

The _____ of a virus is enclosed by a _____ capsid.

Without bacteria in the environment,

Which of the following does not provide support for the endosymbiotic hypothesis?

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 similarity is not shared between algae and plants?

A viroid is a naked, infectious _____ molecule.

Which group of organisms are viroids not viruses) most likely to parasitize?

Which is the correct order of events in the lytic cycle of a bacteriophage?

Naked strands of RNA not covered by a capsid are

Some species of pathogenic bacteria are able to attack specific tissues in the human body due to structures called

What would you call a long chain of Streptococcus bacterial cells that are spherical in shape?

A View 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 and Technology

Biotechnology and Genomics

Genetic Counseling

Darwin and Evolution

Evolution on a Small Scale

Evolution on a Large Scale

The Plants and Fungi

The Animals

Plant Anatomy and Growth

Plant Responses and Reproduction

Being Organized and Steady

The Transport Systems

The Maintenance Systems

Digestion and Human Nutrition

Defenses Against Disease

The Control Systems

Sensory Input and Motor Output

Reproduction and Embryonic Development

Ecology of Populations

Communities and Ecosystems

Human Impact on the Biosphere

Filters

The _ of a virus is enclosed by a _ capsid.