Biology - Unit 3, Viruses Flashcards Preview

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Flashcards in Biology - Unit 3, Viruses Deck (11):
1

What is a virus?

A particle that causes disease in organisms and consists of a core of nucleic acid surrounded by a protein coat.

2

Virus process of reproduction:

Viral replication.

3

What is the lytic cycle?

The viral replication process that rapidly kills a host cell.

4

What is the lysogenic cycle?

The viral replication in which the virus does not immediately kill a host cell.

5

What is prophage?

The nucleic acid of a bacterial virus that is attached to the host's chromosomes.

6

What are retroviruses?

Replicate nucleic acid in the reverse of the standard way. (make DNA from RNA)

7

Examples of viruses

-common cold
-HIV
-Influenza
-Polio
-Chicken Pox
-measels
-rabies

8

Why are viruses not in the Kingdom of Life?

-they are not made of a cell
-they need a host in order to survive

9

How are viruses similar to living things?

-they have genetic material
-can reproduce

10

How are viruses structured?

-core made of genetic material (DNA or RNA)
-protein coat

11

What is a capsid?

protein coat of a virus that surrounds the DNA/RNA of a virus.