Biomolecules Test Review

Which organic molecule would a long-distance runner most likely choose to eat two hours before a race?

• A protein, because it builds muscle mass.

• A lipid because it provides long term energy storage.

• A carbohydrate because it releases energy quickly.

• A protein, because it transports oxygen into the blood stream.

How are the functions of a carbohydrate and a lipid similar?

• Both are a source of energy.

• Both are replicated during meiosis.

• Both lower the activation energy of reactions.

• Both dissolve nutrients in the digestive system.

Why is the “lock and key” analogy often used to describe enzyme function?

• Each enzyme is the same as its substrate.

• Each enzyme will fit with only one specific kind of substrate.

• Each enzyme can only be used once in a reaction and cannot be used again.

• Each enzyme has its own active site that will not fit with other active sites.

Some individuals are unable to digest the lactose found in the milk of cows. The digestive systems of these individuals MOST likely lack which?

• a lipid that coats lactose molecules

• an ability to produce lactose internally

• an enzyme that catalyzes lactose breakdown

• a tolerance to lactose developed during childhood

Why are proteins important to the survival of animals?

• Proteins provide the body with quick-energy.

• Proteins provide insulation.

• Proteins provide genetic information to cells.

• Proteins provide muscle fiber for the body

Why is the “lock and key” analogy often used to describe enzyme function?

• Each enzyme is the same as its substrate.

• Each enzyme will fit with only one specific kind of substrate.

• Each enzyme can only be used once in a reaction and cannot be used again.

• Each enzyme has its own active site that will not fit with other active sites.

Which of the following foods is highest in polysaccharides?

• Broccoli

• Potatoes

• Cheese

• Fish

What are the monomers of a lipid?

• fat cubes and glycogen

• glycerol and amino acids

• fatty acids and glycerol

• amino acids

What are the monomers of a carbohydrate?

• carbs

• celluose

• amino acids

• monosaccharide

Nucleotides are a monomer of which biomolecule?

• Nucleic acids

• Proteins

• Carbohydrates

• Lipids