Viruses (Ch 32)

Question 1

what is virus

Answer 1

Small infectious particles
Cause diseases

Question 2

what cant virus do

Answer 2

reproduce + carry out metabolic pathways without host cell

Question 3

structure of virus

Answer 3

has nucleic acid enclosed in protein coat (capsid)

Sometimes contains a membranous envelope w/ glycoproteins

Question 4

what is capsid

Answer 4

built from protein subunits, capsomeres

Question 5

virus lead a __ b/w life forms and chemicals

Answer 5

a king borrowed life

Question 6

shape of bacteriophage includes

Answer 6

head, tail, fiber

Question 7

what is bacteriophages

Answer 7

viruses that infect bacteria

Question 8

general features of viral reproductive cycle

Answer 8

1. Viral genome enters cell then cell replicated viral genetic material
2. Virus makes use of host enzymes, ribosomes, and other molecules to make own proteins

3.Viral nucleic acids + capsomeres self assemble into new viruses

These exist from host cell, damaging or destroying it (transcriptions + translation process)

Question 9

what happens in viral diseases in plants

Answer 9

Cause spots on leaves + fruits, stunted growth, and damaged flowers or roots

Question 10

most plant viruses have what kind of genome

Answer 10

RNA

Question 11

2 types of viral disease in animals

Answer 11

hiv and aids

Question 12

what is ebola - hemorrhagic fever

Answer 12

Destroy capillaries (blood vessel) so bleeding occurs fast

Question 13

West Nile Virus

Answer 13

encephalitis (brain inflammation)

Question 14

Influenza virus

Answer 14

Spanish Flu
epidemic caused by Type A

Question 15

what is covid

Answer 15

severe acute respiratory syndrome (SARS)

Question 16

what is MERS (camel flu)

Answer 16

Middle East Respiratory syndrome