Topic 6

Question 1

Identifying bacteria

Answer 1

-grow sample in a selective medium
-antibiotics
-gram testing
-observe colonies for characteristics

Question 2

Benefits of agar gel medium

Answer 2

-allows specific bacteria to grow
-when culture spread out with streak plating it spreads individual bacteria
-colonies wil be separate

Question 3

Errors when counting cells

Answer 3

-not evenly spread out so overlaps
-may be dividing so 1 or 2?
-hard to decide whether to count the ones halfway in