Bacteria As

Question 1

what happens if you overuse antibiotics

Answer 1

can result in resistant strains

Question 2

how does antibiotic resistance occur

Answer 2

mutation occurs
resistance gene/allele
resistant bacteria survive and reproduce
increased frequency of resistance allele

Question 3

what type of selection is antibiotic resistance an example of

Answer 3

directional selection

Question 4

steps in aseptic technique

Answer 4

open lid of petri dish as little as possible
wear gloves/mask
flame the loop
burning Bunsen close by to create upward current of air
boil agar

Question 5

what is the importance of opening the lid of the petri dish as little as possible

Answer 5

to prevent contamination of apparatus with unwanted microorganisms/bacteria

Question 6

what is the importance of wearing gloves/mask

Answer 6

to prevent contamination from bacteria on hands/ mouth and prevent release/spread of bacteria into air

Question 7

what is the importance of flaming the loop

Answer 7

to maintain a pure culture of bacteria

Question 8

what is the importance of boiling the agar

Answer 8

so no contamination/other bacteria