Proteins and Fats

A ........................ is a molecule made up of many smaller ones.

• polymer

• macromolecule

• carbohydrate

• monomer

Which elements can be found in proteins?

• C

• O

• F

• S

• H

What is the basic unit/monomer of proteins?

• glucose

• monosaccharides

• glycerol

• amino acids

Answer explanation

Amino acids are the basic units of a protein molecule. There are many different types of amino acids.

Which solution do you use to test for proteins?

• Biuret solution

• Benedict's solution

• Biuret's solution

• Ethanol, followed by distilled water

What should be your observation for a positive Biuret test?

• Blue solution turns violet.

• Blue solution turns green.

• Blue solution gives a violet precipitate.

• Blue solution remains blue.

What is a function of proteins that is incorrect?

• Proteins act as antibodies.

• Proteins act as enzymes and hormones

• Proteins help in repair of worn out cells

• Proteins act as a key source of energy

Answer explanation

While proteins can be used for energy, the main function of proteins is to act as enzymes, hormones, antibodies, and for the repair of worn out cells.

What is a component of fats?

• Glycogen

• Glucagon

• Glycerol

• Glycerin

What elements are present in fats?

• C

• S

• N

• O

What is the ratio of H to O for fats?

• A lot less oxygen than C and H

• A lot more oxygen

  than C and H

• 2:1

• 1:2

How many fatty acid molecules are there in one molecule of fat?

• 4

• 2

• 3

• 1