bio viruses

Question 1

lytic

Answer 1

vDNA into host cell. cel produces capsid protein. vDNA replicated. many virus burst from cell. reproduction is exponential

Question 2

lysogenic

Answer 2

not active. vDNA incorporated into host DNA. virus then can be reproduce. slow. some virus does then then does lytic when aggrivated

Question 3

retro virus RNA

Answer 3

RNA into lympcyte membrane. reverse trabscription then vDNA incproprate into hose DNA. DNA transcirbed into RNA. RNA becomes genetic info for offspring viruse that then leaves the cell

Question 4

prokaryote

Answer 4

binary fission. less genes than humans. circular DNA called nucleoid

Question 5

plasmid DNA

Answer 5

other smalled circular DNA. codes for benficial traits (antibotic resistance)

Question 6

zone of inhibition

Answer 6

place where virus can’t grow

Question 7

bacterial variation causes

Answer 7

1. mutation
2. transformation
3. transduction
4. conjugation

Question 8

transformation

Answer 8

another bacterium died, its DNA is picked up by a different bacteria= changes in its genonome

Question 9

transduction

Answer 9

transformation caused by virus

Question 10

conjugation

Answer 10

F plasmid allowed for mating bridge btw 2 bacteria cells. F and R plasmid from one cell is replicated n send to the cell w/ no plasmid

Question 11

lac inducible operon

can b turned on

Answer 11

gene codes for lactase breaking down lactose. if no lactose, genes don’t need to b transcibed. Lac R gene transcribed a regulatory protein that attaches to promotor.
block RNA polymerase from latching to gene

Question 12

lac inducible operon

if lactose is present n gene is off

Answer 12

allosteric feedback inhibition. lactose=inhibitor regulatory protein

Question 13

trip operon
repressible operon
(can be turned off

Answer 13

trytophan productase. if too much trp is made= tpr gene produces inactive regulatory protein. trp allosteric activated RP which then prohibits tata box