Viruses Flashcards

1
Q

Many viruses cause what?

A

Diseases

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2
Q

Name some viruses

A

Common cold, flu, and acquired immune deficiency syndrome (AIDS)

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3
Q

Are viruses big or small?

A

Small

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4
Q

Are they bigger or smaller than bacteria?

A

Smaller

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5
Q

How many virus particles can fit in a drop of blood?

A

5 billion

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6
Q

Do viruses change?

A

Yes

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7
Q

If viruses change than does their affect on living things change?

A

Yes

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8
Q

Do viruses change often

A

Yes very often

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9
Q

Like living things, viruses contain (blank) and (blank)

A

Like living things, viruses contain protein and genetic material

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10
Q

Can viruses eat, grow, break down food, and use oxygen?

A

No

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11
Q

Can a virus function on its own?

A

No

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12
Q

Where is the only place a virus can reproduce?

A

A host

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13
Q

Host

A

An organism from which a parasite takes food or shelter

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14
Q

How does the virus reproduce using the host?

A

The virus forces the body to make more viruses

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15
Q

What are the basic shapes of viruses?

A

Crystals, spheres, cylinders, and spacecraft

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16
Q

How are viruses grouped?

A

By their shape, the disease they cause, their life cycle, or the genetic material they contain

17
Q

Every virus is made up of (blank) inside a (blank)

A

Every virus is made up of genetic material inside a protein coat

18
Q

The protein coat protects the (blank)

A

The protein coat protects the genetic material

19
Q

The protein coat helps the virus enter a what?

A

A host cell

20
Q

Many viruses have a protein coat that matches (blank) to their specific host

A

Characteristics

21
Q

The genetic material in viruses is either (blank) or (blank)

A

DNA or RNA

22
Q

Most RNA is made up of (blank) strand of nucleotides

23
Q

Most DNA is made up of (blank) strand of nucleotides

24
Q

RNA and DNA both contain info for making (blank)

25
The viruses that cause warts and chicken pox contain (blank)
DNA
26
Viruses that cause colds and the flu contain (blank)
RNA
27
The virus that causes AIDS which is called HIV also contains (blank)
RNA
28
Name step 1 in the lytic cycle
The virus finds and joins itself to a host cell
29
Name step 2 in the lytic cycle
The virus enters the cell or the virus's genetic material is injected into the cell
30
Name step 3 in the lytic cycle
Once the virus's genes are inside, they take over the direction of the host cell and turn it into a virus factory
31
Name step 4 in the lytic cycle
The viruses break out of the host cell, which kills the host cell. The cycle begins again
32
Do all viruses go straight into the lytic cycle?
No
33
Do the viruses that don't go straight into the lytic cycle take shorter or longer time than the ones that do?
Longer
34
Do antibiotics kill viruses?
No they just prevent them
35
Virus
A microscopic particle that gets inside a cell and often destroys the cell