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Microbiology > Chapter 6 Questions > Flashcards

Chapter 6 Questions Flashcards

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Biology 101 flashcards
1
Q

The component(s) of a virus that is/are extended from the envelope for attachment is/are the?

A. Capsomeres
B. spikes
C. Nucleic acid
D. Viral whiskers

A

B. Spikes

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2
Q

Which of the following does a virus lack? Select all that apply

A. Ribosomes
B. Metabolic processes
C. Nucleic acid
D. Glycoprotein

A

Ribosomes and Metabolic processes

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3
Q

The envelope of a virus is derived from the host’s what?

A. Nucleic acids
B. Membrane structures
C. Cytoplasm
D. Genome

A

Membrane structures

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4
Q

In naming viruses, the family name ends with ___________ and genus name ends with ___________.

A. -Virus; -viridae
B. -viridae; virus
C. -Virion; virus
D. -Virus, virion

A

-viridae, -virus

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5
Q

What is another name for a noneveloped virus?

A. enveloped virus
B. Provirus
C. Naked virus
D. Latent virus

A

Naked virus

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6
Q

Which of the following leads to the destruction of the host cells?

A. Lysogenic cycle
B. Lytic cycle
C. Prophage
D. Temperate phage

A

Lytic cycle

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7
Q

A virus obtains its envelope during which of the following phases?

A. attachment
B. Penetration
C. Assembly
D. Release

A

Release

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8
Q

Which of the following components is brought into a cell by HIV?

A. a DNA-dependent DNA polymerase
B. RNA polymerase
C. Ribosome
D. Reverse transcriptase

A

Reverse trancriptase

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9
Q

A positive- strand RNA virus:

A. Must be converted to a mRNA before it can be translated
B. Can be used directly to translate viral proteins
C. Will be degraded by host enzymes
D. Is not recognized by host ribosomes

A

Can be used directly to translate viral proteins

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10
Q

What is the name for the transfer of genetic information from one bacterium to another bacterium by a phage?

A. Transduction
B. Penetration
C. Excision
D. Translation

A

Transduction

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11
Q

Which of the following cannot be used to culture viruses?

A. Tissue culture
B. Liquid medium only
C. Embryo
D. animal host

A

Liquid medium only

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12
Q

Which of the following test can be used to detect the presence of a specific virus?

A. EIA
B. RT-PCR
C. PCR
D. All of the above

A

All of the above

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13
Q

Which of the following is NOT a cytopathic effect?

A. Transformation
B. Cell fusion
C. Mononucleated cell
D. Inclusion bodies

A

Mononucleated cell

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14
Q

Which of these infectious agents do not have Nucleic acid?

A. Viroids
B. Viruses
C. Bacteria
D. Prions

A

Prions

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15
Q

Which of the following is true of prions?

A. They can be inactive by boiling at 100 degrees Celsius
B. They contain a capsid
C. They are a rogue for of protein, PrP.
D. They can be reliability inactivated by an autoclave

A

They are a rogue form of protein, PrP

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16
Q

Scientist have identified viruses that are able to infect fungal cells.

True or false

A

True

17
Q

The virus that infects a bacterium is called a/an __________________.

A

Bacteriophage

18
Q

A/an _______________ virus possesses characteristics of both a polyhedral and helical virus.

A

Complex

19
Q

A virus containing only Nucleic acid and a capsid is called a/an ____________________ virus or ________________ virus.

A

Naked, noneveloped

20
Q

The ___________ __________________ on the bacteriophage allow for binding to the bacterial cell.

A

Tail fibers

21
Q

An enzyme from HIV that can make a copy of DNA from RNA is called __________________ ________________.

A

Reverse transcriptase

22
Q

For lytic viruses, _______________ is a phase during a viral growth curve when the virus is not detected.

A

Eclipse

23
Q

Viruses can be diagnosed and observed using a(n) _____________ microscope.

A

Electron

24
Q

Cell abnormalities resulting from a viral infection are called ___________ ___________.

A

Cytopathic effects

25
Q

Both viroids and virusoids have a(n) __________ genome, but virus require a(n) _________ to reproduce.

A

RNA, helper virus

Microbiology (5 decks)

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