Unit 3 Week 6

Question 1

many viruses that infect animals have a ______

Answer 1

membranous envelope

Question 2

viruses that use the enzyme reverse transcriptase to copy their RNA genome into DNA

Answer 2

retroviruses

Question 3

viral DNA that is integrated into the host genome

Answer 3

provirus

Question 4

disease where symptoms get increasingly worse for a short period followed by the elimination of the virus from the body by the immune system and recovery

Answer 4

acute disease

Question 5

virus that persists in the body for a long period of time

Answer 5

chronic infections

Question 6

type of chronic infection that slowly does damage to the body

Answer 6

low level symptoms

Question 7

type of chronic infection that erupts unpredictably

Answer 7

intermittent symptoms

Question 8

type of chronic infection with no apparent symptoms

Answer 8

asymptomatic

Question 9

weakened solution of virus, components, or other agents that stimulate the immune system to mount defenses against the harmful pathogen

Answer 9

vaccine

Question 10

type of medicine used to help treat viral infections

Answer 10

antiviral drugs

Question 11

RNA molecules a few hundred nucleotides long that infect plants and cause mosaics

Answer 11

viroids

Question 12

proteinacous infectious particles that are more simple than viruses and don’t contain DNA or RNA

Answer 12

prions