Biomolecules

The monomers used to synthesize proteins are called:

• nucleotides

• amino acids

• fatty acids

• sugars

• glycerol

A nucleoside contains

• a pentose sugar

• a purine or pyrimidine base

• one or more phosphate group

• all of these

• a pentose sugar and a base but not phosphate group

The molecule shown below is

• a purine base

• a pyrimidine base

• a sugar

• a fatty acid

• an amino acid

The molecule shown below is

• a purine base

• a pyrimidine base

• a sugar

• a fatty acid

• an amino acid

The molecule shown below is

• dATP

• dADP

• dAMP

• a polysaccharide

• a sugar

What kind of molecule is represented by the structure below?

CH₃CH₂CH₂CH₂CH=CHCH₂CH₂CH₂CH₂CH₂CH₂CH₂COOH

• a sugar

• an unsaturated fatty acid

• a saturated fatty acid

• a disaccharide

• a phospholipid

What type of chemical bond is illustrated below?

• a sugar-sugar bond

• a glycerol-fatty acid bond

• a peptide bond

• a phosphate-phosphate bond

• a hydrogen bond

Which of the following functions is not associated with proteins?

• contraction

• providing structural material

• enzymes

• specific binding

• information storage

Which of the following levels of protein structure is often stabilized by S-S bonds?

• primary structure

• secondary structure

• tertiary structure

• quaternary structure

• both tertiary and quaternary structures

The level of polypeptide folding in which the primary sequence coils around itself, stabilized by regularly spaced hydrogen bonds, is called

• primary structure

• alpha helix

• beta sheet

• tertiary structure

• quaternary structure