Fundamentals of General, Organic, and Biological Chemistry: Amino acids and proteins Flashcards

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1

Which functional group is LEAST important in biochemistry?

A. Amine

B. Ester

C. Aromatic

D. Hydroxyl

E. Amide

C. Aromatic

2

All of the following are examples of fibrous proteins except:

A. Fingernails

B. Insulin

C. Skin

D. Bones

E. Wool

B. Insulin

3

Collagen is an example of a (an):

A. Storage protein

B. Structural protein

C. Hormone

D. Enzyme

E. Transport protein

B. Structural protein

4

Which amino acid is not chiral?

A. Phenylalanine

B. Alanine

C. Arginine

D. Cysteine

E. Glycine

E. Glycine

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

C. Peptide bonds

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

B. Storage of energy

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

A. Amide

8
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Which molecule is an alpha amino acid?

D.

9

Which amino acid can form covalent sulfur-sulfur bonds?

A. Phenylalanine

B. Proline

C. Cysteine

D. Methionine

E. Glycine

C. Cysteine

10

All of the following can be classified as biomolecules except:

A. Nuclei acids

B. Lipids

C. Carbohydrates

D. Proteins

E. All are biomolecules

E. All are biomolecules

11
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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

B. A pH less than its isoelectric point.

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

D. Hydrophilic

13
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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

A. A pH greater than its isoelectric point

14

Serum albumin is an example of a (an)

A. Enzyme

B. Transport protein

C. Structural protein

D. Storage protein

E. Protective protein

B. Transport protein

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

A. Proline

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

D. Alanine