Viral Structure and Function Flashcards Preview

MS1 - Disease & Defense > Viral Structure and Function > Flashcards

Flashcards in Viral Structure and Function Deck (8):
1

What are the four characteristics of classical virus classification?

(1) DNA or RNA; (2) symmetry of the capsid; (3) naked or enveloped; and (4) dimensions of the virion capsid.

2

In contrast, the Baltimore system uses _________ to classify viruses.

the genetic makeup of viruses

3

What differentiates the plus from the minus strand?

Plus strand is ready to be translated in the ribosome

4

Describe the chemical makeup of viral envelopes.

Lipid bilayers acquired during viral assembly that have embedded glycoproteins.

5

By what two ways can viruses egress from a cell?

Cell lysis or membrane budding (which often results in a virion encapsulated by a part of the cell's membrane)

6

What happens during the eclipse period and the latency period?

The eclipse period is characterized by the virus entering a cell and breaking down; no virions are detected intracellularly or extracellularly. The latency period is the period in which the virus builds up within the cells but have yet to be detected outside the cells.

7

Viruses generally attach to _________.

membrane proteins (which are more cell-specific) and carbohydrates

8

With DNA, the negative strand serves as the _________, while in RNA the positive strand _______.

template; can be translated

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