Question 1

Which of the following is a mismatch?

Accepted Answer

A) thermophiles - live in extremely cold temperatures 
B) methanogens - prefer anaerobic environments 
C) halophiles - live in high salt environments 
D) thermoacidophiles - live in high temperatures and acidic environments 
A) thermophiles - live in extremely cold temperatures 
B) methanogens - prefer anaerobic environments 
C) halophiles - live in high salt environments 
D) thermoacidophiles - live in high temperatures and acidic environments A

Question 2

Bacteriophages carry portions of bacterial DNA from one cell to another in a process called

Accepted Answer

A) transformation. 
B) transduction. 
C) conjugation. 
D) infection. 
E) replication. 
A) transformation. 
B) transduction. 
C) conjugation. 
D) infection. 
E) replication. B

Question 3

Which statement is true about prokaryotes?

Accepted Answer

A) They contain a nucleus. 
B) They lack ribosomes. 
C) They usually lack a cell wall. 
D) They do not divide by mitosis. 
E) They contain a single circular DNA molecule as the genetic material. 
A) They contain a nucleus. 
B) They lack ribosomes. 
C) They usually lack a cell wall. 
D) They do not divide by mitosis. 
E) They contain a single circular DNA molecule as the genetic material. D

Question 4

Which of the following could be used to grow lysogenic viruses in the laboratory?

Accepted Answer

A) chicken eggs 
B) cell culture 
C) bacteria 
D) All of the choices could be used. 
A) chicken eggs 
B) cell culture 
C) bacteria 
D) All of the choices could be used.

Question 5

Prokaryotes generally range in size from

Accepted Answer

A) 10-400 nm. 
B) 20-300 mm. 
C) 10-100 µm. 
D) 1-10 µm. 
E) 50-100nm. 
A) 10-400 nm. 
B) 20-300 mm. 
C) 10-100 µm. 
D) 1-10 µm. 
E) 50-100nm.

Question 6

Which group of Archaea are chemoautotrophic anaerobes that will use hydrogen as an electron donor?

Accepted Answer

A) Halophiles 
B) Methanogens 
C) Thermoacidophiles 
D) Cyanobacteria 
A) Halophiles 
B) Methanogens 
C) Thermoacidophiles 
D) Cyanobacteria

Question 7

A lichen is a symbiotic relationship between cyanobacteria and fungi.

Accepted Answer

A) True 
 B)False

Question 8

In order to infect a cell,a virus must

Accepted Answer

A) inject its protein into the cell while the nucleic acid remains attached to the host cell surface. 
B) have a special protein on its surface that can interact with a protein on the surface of the host cell. 
C) actively burrow through the cell wall or cell membrane of the host cell to reach the cell's nucleus. 
D) produce a special extension of its cytoplasm when it comes into contact with the appropriate host cell. 
A) inject its protein into the cell while the nucleic acid remains attached to the host cell surface. 
B) have a special protein on its surface that can interact with a protein on the surface of the host cell. 
C) actively burrow through the cell wall or cell membrane of the host cell to reach the cell's nucleus. 
D) produce a special extension of its cytoplasm when it comes into contact with the appropriate host cell.

Question 9

Chemoautotrophs oxidize which of the following to obtain the energy necessary to reduce carbon dioxide to an organic compound?

Accepted Answer

A) hydrogen gas 
B) hydrogen sulfide 
C) ammonia 
D) All of the above choices are correct. 
E) hydrogen sulfide and ammonia only. 
A) hydrogen gas 
B) hydrogen sulfide 
C) ammonia 
D) All of the above choices are correct. 
E) hydrogen sulfide and ammonia only.

Question 10

What are the two Domains that the prokaryotes are classified under?

Accepted Answer

A) Archaea & Bacteria 
B) Eukarya & Bacteria 
C) Archaea & Eukarya 
D) Protista & Archaea 
A) Archaea & Bacteria 
B) Eukarya & Bacteria 
C) Archaea & Eukarya 
D) Protista & Archaea

Question 11

Which of the following is not part of the reproduction cycle of HIV?

Accepted Answer

A) Reverse transcription of the viral RNA 
B) Reverse transcription of the viral DNA 
C) Maturation of the viruses 
D) Biosynthesis of the viral mRNA 
A) Reverse transcription of the viral RNA 
B) Reverse transcription of the viral DNA 
C) Maturation of the viruses 
D) Biosynthesis of the viral mRNA

Question 12

Influenza strains that sweep around the world often carry names such as Shanghai H1N1 or Mexico City H2N2.The viruses vary in H and N surface proteins because

Accepted Answer

A) the viruses reproduce and attack people in cities more often. 
B) these viruses emerged as stray DNA from the genomes of people in these cities. 
C) this is where the antibodies of immune people began to break down and the old virus was again virulent. 
D) when infected people develop immunity to the present virus,strains that mutate sufficiently to be outside the range of immunity are soon spread in highly populated areas. 
A) the viruses reproduce and attack people in cities more often. 
B) these viruses emerged as stray DNA from the genomes of people in these cities. 
C) this is where the antibodies of immune people began to break down and the old virus was again virulent. 
D) when infected people develop immunity to the present virus,strains that mutate sufficiently to be outside the range of immunity are soon spread in highly populated areas.

Question 13

When conditions are unfavorable,some Gram positive bacteria form

Accepted Answer

A) pili. 
B) endospores. 
C) galls. 
D) capsules. 
E) thylakoids. 
A) pili. 
B) endospores. 
C) galls. 
D) capsules. 
E) thylakoids.

Question 14

Study the life cycle diagram.Label A is the ________ life cycle.

Accepted Answer

A) lysogenic 
B) sexual 
C) lytic 
D) alternation of generations 
A) lysogenic 
B) sexual 
C) lytic 
D) alternation of generations

Question 15

If a virus is latent,it

Accepted Answer

A) cannot be a retrovirus. 
B) has not entered a lytic cycle. 
C) has not entered a lysogenic cycle. 
D) is gaining a new envelope via "budding." 
E) is easy to develop immunity against it. 
A) cannot be a retrovirus. 
B) has not entered a lytic cycle. 
C) has not entered a lysogenic cycle. 
D) is gaining a new envelope via "budding." 
E) is easy to develop immunity against it.

Question 16

The cycle of viral infection of a bacterial cell that will cause its death most rapidly is called the _______ cycle.

Accepted Answer

A) lysogenic 
B) lysozyme 
C) lytic 
D) lysol 
E) lysosome 
A) lysogenic 
B) lysozyme 
C) lytic 
D) lysol 
E) lysosome

Question 17

All of the following are means of genetic recombination in prokaryotes EXCEPT

Accepted Answer

A) conjugation. 
B) transformation. 
C) transduction. 
D) crossing over. 
A) conjugation. 
B) transformation. 
C) transduction. 
D) crossing over.

Question 18

Ivanowsky first recognized that something smaller than a bacterium,called a filterable virus,was able to cause disease in the year

Accepted Answer

A) 1965. 
B) 2001. 
C) 1892. 
D) 1700. 
E) 1650. 
A) 1965. 
B) 2001. 
C) 1892. 
D) 1700. 
E) 1650.

Question 19

Which description best describes the cell wall of a Gram-positive bacteria?

Accepted Answer

A) It is composed of a single plasma membrane and a thin outer layer of peptidoglycan. 
B) It is composed of a double layer in the plasma membrane and a thin outer layer of peptidoglycan. 
C) It is composed of a double layer in the plasma membrane and a thick outer layer of peptidoglycan. 
D) It is composed of a single plasma membrane and a thick outer layer of peptidoglycan. 
E) It is composed of a single plasma membrane and a thin outer layer of cellulose. 
A) It is composed of a single plasma membrane and a thin outer layer of peptidoglycan. 
B) It is composed of a double layer in the plasma membrane and a thin outer layer of peptidoglycan. 
C) It is composed of a double layer in the plasma membrane and a thick outer layer of peptidoglycan. 
D) It is composed of a single plasma membrane and a thick outer layer of peptidoglycan. 
E) It is composed of a single plasma membrane and a thin outer layer of cellulose.

Question 20

Which statement is NOT true about a retrovirus?

Accepted Answer

A) It may cause cancer or AIDS. 
B) It contains reverse transcriptase. 
C) It remains in the host cell genome,but is not replicated when host DNA is replicated. 
D) It has the capacity to integrate cDNA into the host DNA of the cell it infects. 
A) It may cause cancer or AIDS. 
B) It contains reverse transcriptase. 
C) It remains in the host cell genome,but is not replicated when host DNA is replicated. 
D) It has the capacity to integrate cDNA into the host DNA of the cell it infects.

Exam 20: Viruses,bacteria,and Archaea

Which of the following is a mismatch?

Bacteriophages carry portions of bacterial DNA from one cell to another in a process called

Which statement is true about prokaryotes?

Which of the following could be used to grow lysogenic viruses in the laboratory?

Prokaryotes generally range in size from

Which group of Archaea are chemoautotrophic anaerobes that will use hydrogen as an electron donor?

A lichen is a symbiotic relationship between cyanobacteria and fungi.

In order to infect a cell,a virus must

Chemoautotrophs oxidize which of the following to obtain the energy necessary to reduce carbon dioxide to an organic compound?

What are the two Domains that the prokaryotes are classified under?

Which of the following is not part of the reproduction cycle of HIV?

Influenza strains that sweep around the world often carry names such as Shanghai H1N1 or Mexico City H2N2.The viruses vary in H and N surface proteins because

When conditions are unfavorable,some Gram positive bacteria form

Study the life cycle diagram.Label A is the ________ life cycle.

If a virus is latent,it

The cycle of viral infection of a bacterial cell that will cause its death most rapidly is called the _______ cycle.

All of the following are means of genetic recombination in prokaryotes EXCEPT

Ivanowsky first recognized that something smaller than a bacterium,called a filterable virus,was able to cause disease in the year

Which description best describes the cell wall of a Gram-positive bacteria?

Which statement is NOT true about a retrovirus?

A View of Life

Basic Chemistry

The Chemistry of Organic Molecules

Cell Structure and Function

Membrane Structure and Function

Metabolism: Energy and Enzymes

Photosynthesis

Cellular Respiration

The Cell Cycle and Cellular Reproduction

Meiosis and Sexual Reproduction

Mendelian Patterns of Inheritance

Molecular Biology of the Gene

Regulation of Gene Expression

Biotechnology and Genomics

Darwin and Evolution

How Populations Evolve

Speciation and Macroevolution

Origin and History of Life

Taxonomy,systematics,and Phylogeny

Protist Evolution and Diversity

Fungi Evolution and Diversity

Plant Evolution and Diversity

Flowering Plants: Structure and Organization

Flowering Plants: Nutrition and Transport

Flowering Plants: Control of Growth Responses

Flowering Plants: Reproduction

Invertebrate Evolution

Vertebrate Evolution

Human Evolution

Animal Organization and Homeostasis

Circulation and Cardiovascular Systems

The Lymphatic and Immune Systems

Digestive Systems and Nutrition

Respiratory Systems

Body Fluid Regulation and Excretory Systems

Neurons and Nervous Systems

Sense Organs

Locomotion and Support Systems

Hormones and Endocrine Systems

Reproductive Systems

Animal Development

Behavioral Ecology

Population Ecology

Community and Ecosystem Ecology

Major Ecosystems of the Biosphere

Conservation of Biodiversity

Filters

Influenza strains that sweep around the world often carry names such as Shanghai H₁N₁ or Mexico City H₂N₂.The viruses vary in H and N surface proteins because