ester bonds.

glycoside bonds.

peptide bonds.

amide bonds.

facultative anaerobic bacteria

microaerophylic bacteria

aerobic bacteria

anaerobic bacteria

aerotolerant bacteria

3

1

2

4

Acid production and gas production.

No acid production, but gas production.

No acid production and no gas production.

Acid production, but no gas production.

A

C

D

B

It is a major protein in milk.

It is found in collagen and is a gelling agent.

It is a molecule used to store energy.

It is found in cell membranes and id a source of energy.

It is found in the bacterial cell wall.