AP Bio Ch. 3: Carbon and the Molecular Diversity of Life

The chemical group that can cause an organic molecule to act as a base is...

• -COOH

• -OH

• -SN

• -NH2

• -CH3

The chemical group that confers acidic properties to organic molecules is...

• -COOH

• -OH

• -SN

• -NH2

• -CH3

Which of the following is not one of the many functions performed by proteins?

• acting as signals and receptors

• acting as an enzymatic catalyst for metabolic reactions

• providing protection against disease

• serving as contractile components of muscle

• forming primary energy storage in plant seeds

What happens when a protein denatures?

• Its primary structure is disrupted.

• Its secondary and tertiary structures are disrupted.

• It always flips inside out.

• It hydrolyzes into component amino acids.

• Its hydrogen bonds, ionic bonds, hydrophobic interactions, disulfide bridges, and peptide bonds are disrupted.

What determines the sequence of the amino acids in a particular protein?

• its primary structure

• the sequence of nucleotides in RNA, which was determined by the sequence of nucleotides in the gene for that protein.

• the sequence of nucleotides in DNA, which was determined by the sequence of nucleotides in RNA.

• the sequence of RNA nucleotides making up the ribosome.

• the three-dimensional shape of the protein.

Tags

NGSS.HS-LS1-1

Which of the following are polysaccharides?

• glucose

• sucrose

• cellulose

• starch

A bond between three fatty acids due to bonds between a hydroxyl group and a carboxyl group that forms a triacylglycerol.

• ester linkage.

• disulfide bridge.

• glycosidic linkage.

• polypeptide bond.

Two cysteine monomers are brought close together by folding and bond.

• ester linkage

• glycosidic linkage

• peptide bond

• disulfide bridge