Chapter 33: Viruses

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HIV

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19 Terms

1

HIV

________ is an example of a virus responsible for an emerging disease: a new illness that suddenly affects significant numbers of individuals in a host population.

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2

Drugs

________ that interfere with viral infection or replication are called antivirals.

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3

animal cells

In viruses that infect ________, the dormant state is called latency.

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4

AIDS

________ is an affliction caused by the human immunodeficiency virus (HIV)

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5

Physicians

________ and researchers use the term epidemic (literally,"upon- people) "to describe a disease that rapidly infects many individuals over a widening area.

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6

CD4

Although ________ is necessary for HIV attachment, the viral genome will not be uncoated unless the virion also binds to a second membrane protein, a co- receptor.

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7

Helper T cells

________ are crucial to the immune systems responses to invading pathogens.

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8

HIV

Like other viruses, ________ parasitizes specific types of cells- most notably, the helper T cells of the immune system, which is the bodys defense system against disease.

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9

Viruses that reverse

transcribe their genome in this way are called retroviruses ("backward-viruses")

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10

HIV is an example of a virus responsible for an emerging disease

a new illness that suddenly affects significant numbers of individuals in a host population

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11

lateral gene transfer

picking up genes from one organism and shuttling them to another organism of the same species or even a different species

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12

epidemic

to describe a disease that rapidly infects many individuals over a widening area

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13

pandemic

An epidemic of worldwide scope

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14

co-receptor

the viral genome will not be uncoated unless the virion also binds to a second membrane protein

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15

antivirals

Drugs that interfere with viral infection or replication

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16

RNA replicases

function as RNA-dependent RNA polymerase

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17

reverse transcriptase

the genome transcribed from RNA to DNA by a viral enzyme

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18

emerging disease

a new illness that suddenly affects significant numbers of individuals in a host population

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19

Latency

In viruses that infect animal cells, the dormant state is called ___.

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