Intro to Viruses

Question 1

The most abundant life form in the human body:

Answer 1

Bacteriophages

Question 2

Viruses can cause ___, ____, and ____ diseases

Answer 2

acute, persistent, recurrent

Question 3

Viruses that are a large part of our genetic material

Answer 3

endogenous retroviruses

Question 4

The largest of all viruses:

Answer 4

Mimivirus

Question 5

Viruses replicate by ____ assembly of performed components

Answer 5

de novo

Question 6

Viruses are obligate ____ parasites

Answer 6

intracellular

Question 7

What are the five viruses around in the ancient times ?

Answer 7

Smallpox
Polio
Rabies
Measles
Yellow Fever

Question 8

The first virus directly studied/isolated = ?

Answer 8

tobacco mosaic

Question 9

What virus doesn’t infect humans?

Answer 9

tobacco mosaic

naked, helical

Question 10

Virus that has helical shape (like a spiral staircase) and is a naked virus too = ?

Answer 10

tobacco mosaic

Question 11

Naked viruses have a capsid but no…?

Answer 11

envelope

Question 12

What are two major families that are naked viruses?

Answer 12

Adeno- and Picorno- viruses

Question 13

Most naked viruses emerge from cells by:

Answer 13

cell lysis

Question 14

Most viruses that affect the gut are ___ viruses

Answer 14

naked

Question 15

Naked viruses are resistant to what five things?

Answer 15

heat, detergents, drying, pH, and proteases

Question 16

Enveloped viruses emerge from cell via:

Answer 16

budding

Question 17

Enveloped viruses have what that extend from the envelope?

Answer 17

Glycoproteins

Question 18

Glycoproteins are also called:

Answer 18

envelope proteins (envelope glycoproteins)

Question 19

Enveloped viruses are resistant to what four things?

Answer 19

heat, drying, detergents, bleach

Question 20

Human helical viruses all have ___ genomes

Answer 20

RNA

Question 21

Complex capsids are seen in:

Answer 21

pox viruses

Question 22

Do complex viruses have an envelope?

Answer 22

Yes

Question 23

Icos = __ faces, __ vertices

Answer 23

20 faces
12 vertices (which make up pentons)

*Made up of pentons and hexons

Question 24

Virus that causes strep throat, gastroenteritis, pneumonia

Answer 24

Adenovirus

Question 25

Viruses undergo ____ _____ (they don’t need assistance of cell)

Answer 25

self-assembly

Question 26

Bacteriophage has a ___ body and a ___ head.

Answer 26

helical body

Icosahedral head