Microbiology 1

Question 1

What is fungi cell wall made out of?

Answer 1

Chitin and glucan

Question 2

How does penicillin work?

Answer 2

Penicillium produced from mould

Penicillin creates holes in bacterial cell wall making the insides leak out.

Question 3

What holds bacteria together?

Answer 3

Peptidoglycan (crosslinked disaccharides)
Gram positive: P purple (thick peptidoglycan)
Gram negative: pink or red (thin peptidoglycan covered by an outer membrane that contains lipopolysaccharides LPS which is an endotoxin)

Question 4

Four phases bacterial growth

Answer 4

Lag
Exponential
Stationary
Decline

Question 5

Haemagglutinins

Answer 5

Antigenic glycoproteins on virus surface
Binds the virus to the host cell
18 different types (h1, H2 etc)

Which cell it will affect and how easily it does so

Question 6

Neurominidase

Answer 6

Enzymes on viral surface
Acts on infected cell surface to release viral progeny

Determines how quickly it will spread