bacteria and virus page 1
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Created by:
grannynanny513 on March 15, 2010
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11 terms
Terms | Definitions |
|---|---|
 Why is a virus not a cell? | Cannot reproduce outside a living host cell b/c uses its enzymes, atp, ribs |
| Why are intracellular parasites? | must be inside a cell in order to make more of themselves |
| Structural characteristics of all viruses | small, capsid, nucleic acid |
| structural characteristics of some viruses | envelope, enzymes |
| size of viruses | smaller than prokaryotes |
| capsid | outer shell of virus that is made up of proteins. |
| how many sides do most viruses have? | 20 sides, icosahedron |
| nucleic acid in all viruses | DNA or RNA, if genome is RNA then the RNA strand contains the genes |
| envelope | surrounds capsid, comes from host cell plasma membrane and buds out of cell |
| spike protein | embedded in envelope, coded by viral genes |
| enzymes in some viruses | carried in capsid with nucleic acid. coded by viral genome |
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