Question

2.20 unit 2: biochemistry summative test
enzymes: (mark all that apply)
□ carry out necessary biological reactions like digestion
□ are able to be used more than once
□ float when frozen
□ lower the energy necessary to carry out a reaction

Explanation:

Enzymes are biological catalysts. They carry out necessary biological reactions (e.g., digestion). They are not consumed in reactions, so can be used more than once. They lower the activation energy of reactions. "Float when frozen" is a property of water, not enzymes.

Answer:

• carry out necessary biological reactions like digestion
• are able to be used more than once
• lower the energy necessary to carry out a reaction