Viruses Flashcards

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1
Q

What is a virus?

A

Obligate intracellular parasite

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2
Q

What must viruses have?

A

A nucleic acid core and a protein shell

Must live inside a cell and harm the host

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3
Q

What are the steps of the Lytic Virus Lifecycle?

A

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

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4
Q

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

A

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

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5
Q

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

A

Prophage

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6
Q

What are the 3 types of viruses?

A

DNA Viruses, RNA viruses, and retroviruses

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7
Q

What are the 2 types of RNA viruses?

A

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

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8
Q

What does Retroviruses contain?

A

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

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9
Q

A virus must have _______ to undergo the lysogenic cycle?

A

DNA

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10
Q

What is a bacteriophage?

A

A virus that attacks bacteria

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11
Q

What are the 4 types of herpes?

A

Oral, genital, chicken pox, and shingles

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12
Q

What is Rinovirus?

A

common cold

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13
Q

What is orthomyxovirus?

A

The flu

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14
Q

What is Ebola?

A

Causes hemorragic fever

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15
Q

As viruses evolve, they become less and less ________.

A

deadly

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16
Q

What is the human immunodeficency virus?

A

HIV

17
Q

What is a Viroid?

A

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

18
Q

What is a prion?

A

proteinaceous infectious bacteria

19
Q

What do Prions cause?

A

Mad cow disease and scrapies