Question

4 multiple choice 30 points what type of biomolecule is an enzyme?
lipid
carbohydrate
protein
5 multiple choice 20 points what is the function of an enzyme?
they speed up chemical reactions
they slow down chemical reactions
they do not affect chemical reactions

Explanation:

Question 4

Enzymes are biological catalysts, and most enzymes are proteins (some are RNA, but the options here have protein as a choice, and lipid and carbohydrate are not the main biomolecule type for enzymes).

Enzymes act as catalysts in biological systems, and the primary function of a catalyst is to increase the rate of a chemical reaction (speed up), not slow down or have no effect.

Answer:

protein (the option with "protein" as the text, assuming the options are labeled, e.g., if the third option is "protein", then the answer is the third option: protein)

Question 5