What is an enzyme?

Which of these is not a biological molecule?

• Carbohydrate

• Lipid

• Mineral ion

• Protein

Which molecule is the main respiratory substrate?

• Glucose

• Glycerol

• Glucagon

• Glycogen

Which reagent do we use to test for proteins?

• Iodine

• Biuret

• Benedict's

• Ethanol

What colour does iodine turn in the presence of starch?

• Brick red

• Lilac

• Blue-black

• White

What is metabolism?

• The rate of respiration.

• The sum of all chemical reaction in an organism.

• The rate of chemical reactions in a cell.

• The sum of all the chemical reactions in a cell.

Which metabolic reaction produces glucose?

• Respiration

• Photosynthesis

• Synthesis

• Breakdown

Which of these is a glucose storage molecule within animals?

• Starch

• Cellulose

• Glycogen

• Glycerol

________ are required for all metabolic reactions.

Starch can not be absorbed into the bloodstream, it must be digested into glucose molecules first.

• True

• False

What are the monomers that make up the protein polymers?

• Glycerol

• Fatty acids

• Amino acids

• Glucose