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Flashcards in bio viruses Deck (13):
1

lytic

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

2

lysogenic

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

3

retro virus RNA

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

4

prokaryote

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

5

plasmid DNA

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

6

zone of inhibition

place where virus can't grow

7

bacterial variation causes

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

8

transformation

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

9

transduction

transformation caused by virus

10

conjugation

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

11

lac inducible operon
(can b turned on)

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

12

lac inducible operon
if lactose is present n gene is off

allosteric feedback inhibition. lactose=inhibitor regulatory protein

13

trip operon
repressible operon
(can be turned off

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