exam 2

Question 1

viruses

Answer 1

obligate intercellular parasites, i.e, they cannot multiply or survive unless they invade a specific host cell and instruct its genetic and metabolic machinery to make and release new viruses

Question 2

virion

Answer 2

a fully formed virus that is able to establish an infection in a host cell

Question 3

virome

Answer 3

the total of the viruses associated in your body

Question 4

capsid

Answer 4

protein shell that surrounds the nucleic acid, a most prominent feature of viruses. Constructed from identical protein subunits called capsomeres

Question 5

nucleocapsid

Answer 5

the capsid together with the nucleic acid

Question 6

capsomeres

Answer 6

identical protein subunits that construct a capsid, spontaneously self-assemble into the finished capsid

Question 7

envelope

Answer 7

the external covering of a capsid, usually a modified piece of the host cell’s membrane

Question 8

enveloped viruses

Answer 8

take a bit of the cell membrane when they are released from a host cell. Can bud from the cell membrane, nuclear envelope, or endoplasmic reticulum

Question 9

spikes

Answer 9

can be found on naked enveloped viruses, project from the nucleocapsid or the envelope. Allow viruses to dock with host cells

Question 10

helical capsids

Answer 10

capsids with rod-shaped capsomeres that bond together to form a series of hollow discs resembling a bracelet

Question 11

icosahedral capsids

Answer 11

capsids that form an icosahedron, three-dimensional, 20-sided figure with 12 evenly spaced corners

Question 12

complex capsids

Answer 12

capsids that may have multiple shapes of proteins and take shapes that are not [usual?]

Question 13

genome

Answer 13

the total genetic information carried by an organism