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Question 1

What is genetic variation?

Answer 1

the small differences in DNA base sequences between individual organisms within a species population

Question 2

What does genetic variation result in?

Answer 2

transferred from one generation to next resulting in genetic diversity within a species population

Question 3

How do antibiotics work?

Answer 3

can break down muriem cell wall, destroy cell synthesis

Question 4

Explain why student passed forceps through bunsen flame before and after each time she used

Answer 4

to ensure sterile
so only one kind of bacteria present as no unwanted bacteria grows/transferred to agar plate

Question 5

Explain appearance of agar plates after incubation

Answer 5

clear ring = where bacteria didn’t grow
= zone of inhibition
shows bacteria inhibited by antibiotic
no clear ring = were resistant

Question 6

What is an example of an aseptic technique used for agar plates?

Answer 6

flame innoculating loop

Question 7

How does antibiotic resistance occur?

Answer 7

Genetic mutations occur, making some bacteria resistant to an antibiotic.
When an infection is treated with antibiotics, resistant bacteria are able to survive.
Resistant bacteria reproduce, passing on the allele for antibiotic resistance to their offspring.

Question 8

What does it mean if genes for antibiotic resistance occur on plasmids?

Answer 8

they can also be transferred from one bacterium to another in the process of conjugation.