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Biology > Chap. 19 Viruses > Flashcards

Chap. 19 Viruses Flashcards

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AP® Biology flashcards Biology 101 flashcards
0
Q

Three characteristics of viruses

A

Acellular
Non living
Obligate intro cellular parasites

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1
Q

Acellular

A

Not a cell

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2
Q

Main ways to classify viruses

A

Size
Type of gnome
Morphology (shape)

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3
Q

Total structure of viruses

A

Nucleocapsid

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4
Q

Two types of molecules that make up a virus

A

Protein

Nucleic acid

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5
Q

Protein shell of a virus is called

A

Capsid

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6
Q

The Nucleic acid within a virus can be either

A

Double or single stranded RNA

Double or single stranded DNA

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7
Q

Subunits of capsizes are

A

Capsomeres

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8
Q

20 equallatural triangal faces

A

Icosahedron

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9
Q

Helical capsizes look like

A

Rods

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10
Q

“Complex” virus structures look like

A

Lunar landers

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11
Q

Bilipid membranous structures taken with the virus after leaving the cell

A

Envelope

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12
Q

Retroviruses contain what enzyme

A

Reverse transcriptase

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13
Q

Proteses are

A

Enzymes that chop nucleotides

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14
Q

Virus matrix

A

Protein layer between nucleopasid and envelope

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15
Q

Reversetranscriptase replicates

A

RNA into DNA

16
Q

Viruses subunits come together to form new viruses at

A

Self assembly

17
Q

Viruses exit the cell by

A

Exocytosis
Lysis ( breaking open of the cell)
Budding from host

18
Q

What is reassortment

A

When multiple viruses enter one cell then during self assembly the subunits of the two viruses come together to make a new virus

19
Q

Circular RNA molecules that infect plants cells

A

Viroids

20
Q

Preons

A

Slow acting, virtually industry able infectious proteins that cause brain diseases in mammals

21
Q

Preons work by

A

Changing existing proteins within the body to act as the preons that can not be broken down

22
Q

Pages

A

Bacteria infecting viruses

23
Q

Lyric cycle

A

Viral cycle ending with the cell explode

24
Q

Lysogenic cycle

A

Replicates the phage gnome without destroying the cell

25
Q

Prophage

A

Integrated viral DNA

Biology (12 decks)

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