Applied Bio Macromolecules HW #2

The monomer of proteins are...

• monosaccharides

• amino acids

• monoglycerides

• nucleotides

Which below is NOT a function of proteins.

• Transmit genetic information (heredity)

• Bone, muscle and skin

• immune system

• carry oxygen through the blood (hemoglobin)

Which molecule is used by animals for long term energy storage?

• carbohydrate

• lipid

• protein

• nucleic acid

Which end of the phospholipid molecule is hydrophobic?

• glycerol "head"

• lipid "tail"

Unsaturated fats...

• have all single bonds

• have at least one double bond

• are made of all triple bonds

• tend to come from animals

The shape most often associated with proteins is/are

• a long, well-folded molecule

• one or more rings

• a glycerol head and up to three fatty acid tails

• a double helix

How many amino acids are there?

• 5

• 10

• 15

• 20

How many amino acids are considered essential?

• 3

• 6

• 9

• all of them

True or false. Lipids are insoluble (will not dissolve) in water.

• True

• False

True or False. Lipids are polar molecules.

• True

• False