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Flashcards in Viruses Deck (19)
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1

What is a virus?

Obligate intracellular parasite

2

What must viruses have?

A nucleic acid core and a protein shell
Must live inside a cell and harm the host

3

What are the steps of the Lytic Virus Lifecycle?

1) Attachment
2)Penetration
3)Biosynthesis
4)Maturation
5)Release

4

What is different between the Lytic virus lifecycle and the Lysogenic Virus lifecycle?

The virus lies dormant and allows the host cell to divide replicating the virus's DNA along with the hosts

5

What is the viral DNA in the host called ****?

Prophage

6

What are the 3 types of viruses?

DNA Viruses, RNA viruses, and retroviruses

7

What are the 2 types of RNA viruses?

positive virus-translates to a protein
negative virus-has RNA dependent RNA polymerase and has to make another complement to be able to code for a protein

8

What does Retroviruses contain?

RNA dependent DNA polymerase, which allows it to undergo Lysogenic cycle

9

A virus must have _______ to undergo the lysogenic cycle?

DNA

10

What is a bacteriophage?

A virus that attacks bacteria

11

What are the 4 types of herpes?

Oral, genital, chicken pox, and shingles

12

What is Rinovirus?

common cold

13

What is orthomyxovirus?

The flu

14

What is Ebola?

Causes hemorragic fever

15

As viruses evolve, they become less and less ________.

deadly

16

What is the human immunodeficency virus?

HIV

17

What is a Viroid?

A type of virus that can only attack plants due to a lack of a protein capsule

18

What is a prion?

proteinaceous infectious bacteria

19

What do Prions cause?

Mad cow disease and scrapies