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16 notecards = 4 pages (4 cards per page)

Viewing:

Amino acids and proteins

front 1

Which functional group is LEAST important in biochemistry?

A. Amine

B. Ester

C. Aromatic

D. Hydroxyl

E. Amide

back 1

C. Aromatic

front 2

All of the following are examples of fibrous proteins except:

A. Fingernails

B. Insulin

C. Skin

D. Bones

E. Wool

back 2

B. Insulin

front 3

Collagen is an example of a (an):

A. Storage protein

B. Structural protein

C. Hormone

D. Enzyme

E. Transport protein

back 3

B. Structural protein

front 4

Which amino acid is not chiral?

A. Phenylalanine

B. Alanine

C. Arginine

D. Cysteine

E. Glycine

back 4

E. Glycine

front 5

Which type of interaction is not directly involved in maintaining tertiary structure?

A. Hydrophobic interactions

B. Disulfide bridges

C. Peptide bonds

D. Salt bridges

E. Hydrogen bonding

back 5

C. Peptide bonds

front 6

All of the following are major functions of proteins except:

A. Transport of necessary chemicals

B. Storage of energy

C. Control of biochemical reactions

D. Support for organs or tissue

E. Protection against foreign substances

back 6

B. Storage of energy

front 7

The peptide bond joining amino acids into proteins is a specific example of an _______ bond.

A. Amide

B. Ester

C. Glycosidic

D. Hydrogen

E. Carbonyl

back 7

A. Amide

front 8

Which molecule is an alpha amino acid?

back 8

D.

front 9

Which amino acid can form covalent sulfur-sulfur bonds?

A. Phenylalanine

B. Proline

C. Cysteine

D. Methionine

E. Glycine

back 9

C. Cysteine

front 10

All of the following can be classified as biomolecules except:

A. Nuclei acids

B. Lipids

C. Carbohydrates

D. Proteins

E. All are biomolecules

back 10

E. All are biomolecules

front 11

An amino acid will have the form shown at:

A. Any pH other than 7.0

B. A pH less than its isoelectric point

C. A pH grater than its isoelectric point

D. A pH of 7.0

E. Its isoelectric point

back 11

B. A pH less than its isoelectric point.

front 12

Polar R groups, along with acidic and basic R groups, are said to be ______ because they are attracted to water molecules.

A. Unreactive

B. Hydrophobic

C. Ionized

D. Hydrophilic

E. None of the above

back 12

D. Hydrophilic

front 13

An amino acid has the form shown at,

A. A pH grater than its isoelectric point

B. A pH less than its isoelectric point

C. A pH of 7.0

D. It’s isoelectric point.

E. Any pH other than 7.0

back 13

A. A pH greater than its isoelectric point

front 14

Serum albumin is an example of a (an)

A. Enzyme

B. Transport protein

C. Structural protein

D. Storage protein

E. Protective protein

back 14

B. Transport protein

front 15

The C-terminal amino acid in the peptide, Ala-Leu-Gly-His-Pro is,

A. Proline

B. Leucine

C. Glycine

D. Histidine

E. Alanine

back 15

A. Proline

front 16

The N-terminal amino acid in the peptide, Ala-Leu-Gly-His-Pro is,

A. Glycine

B. Proline

C. Leucine

D. Alanine

E. Histidine

back 16

D. Alanine