L8. Intro to Microbes

Question 1

What is the purpose of pili on bacterial cell walls?

Answer 1

Adhesion

Question 2

Which technique helps identify bacterial types?

Answer 2

Gram staining

Question 3

Describe gram-positive bacteria.

Answer 3

They have a thick peptidoglycan cell wall which retains the purple dye’s colour.

Question 4

Describe gram-negative bacteria.

Answer 4

Thin peptidoglycan wall which doesn’t retain the colour so it appears pink.