The ability to pass characteristics from one generation to the next

The ability to harness energy from the environment and use it for required biochemical reactions

The ability to maintain a constant internal state

The ability to sense environmental stimuli causing the organism to modify its behaviour

An ester group

A carboxyl group

A sulfhydryl or thiol group

A hydroxyl group

A sulfhydryl or thiol group

A carbonyl group

A carboxylic acid or carboxylate group

A hydroxyl group

2

3

1

4

Animal, plant and bacterial cells

Both animal cells and bacterial cells

Only bacterial cells

Only animal cells