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created 9 days ago by rizzzy4
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1

virus

genes in protein coat; most simple; need a host

2

viruses classified how

DNA or RNA viruses; can be double or single stranded; can be circular or linear

3

capsid

shell that surrounds genome; made by capsomeres

4

bacteriophages or phages are what

viruses that infect bacteria; are usually DNA and no envelope; have tail that injects DNA into host

5

host range

limited number of host cells that can be infected

6

obligate intracellular parasites

can only replciate with a host

7

Process od phages

entry, replicate, take over machinery, assemble and exit

8

REplicative cycles of phages

lytic-kill host cell; burst cell wall; virulent

lysogenic- replicate without killing; can be pushed to lytic via stimulus trigger

temperate phages- can use both lytic and lysogenic cycles

9

prophage

phage integrated into chromosomes

10

animal viruses

can be rna or dna; can have envelope or not

11

glycoproetins

are used for viruses to bind

12

viral enveloped developed how

developed from membrane of host; now looks like own body cell

13

retrovirus

reverse transcription; RNA genome into DNA

HIV virus example

14

provirus

when RNA genome is integrated into host genome; permanent

15

viruses can not be treated with antibiotics, true or false?

true they cannot

16

what leads to new viruses

mutations, mixing of isolated places through travel, human-animal interactions

17

Viruses in plants

RNA genome; horizontal=damage to cell wall; vertical=passed from generation

18

prions 2 parts- qualities and how function/multiply

infectious proteins; found in food, slow moving, virtually indestructible, incorrectly folded

somehow make regular shaped become misshapen (incorrectly folded), form complex and convert more regular to prions