1.2 Amino acds and Proteins

Question 1

Essential amino acids

Answer 1

PhenylalanineValineTryptophanThreonineIsoleucineMethionineHistidineArginineLeucineLysine

Question 2

Essential in the diet of PKU patients

Answer 2

Tyrosine

Question 3

Alkyl functional groups

Answer 3

GlycineAlanineValineLeucineIsoleucone

Question 4

Hydroxyl group

Answer 4

SerineThreonine

Question 5

Sulfur Group

Answer 5

CysteineMethionine

Question 6

Carboxylic acid group

Answer 6

AspartateGlutamate

Question 7

Amide Group

Answer 7

GlutamineAsparagine

Question 8

Amino group

Answer 8

LysineArginine

Question 9

Aromatic group

Answer 9

PhenylalanineTyrosineTryptohphan

Question 10

Looped/Cyclic

Answer 10

Proline

Question 11

Negatively charged (acidic)

Answer 11

Glutamic acidAspartic acid

Question 12

Positively charged (basic)

Answer 12

ArgininehistidineLysine

Question 13

Polar uncharged (hydrophilic)

Answer 13

SerineThreonineAsparagineGlutamineCysteine

Question 14

Nonpolar aliphatic (hydrophobic)

Answer 14

GlycineProlineAlanineValineIsoleucineLeucineMethionine

Question 15

Aromatic

Answer 15

PhenylalanineTyrosineTryptophan

Question 16

Can be inserted in foldings because of the imino group

Answer 16

Proline

Question 17

Protein charge when pH > PI

Answer 17

Negative

Question 18

Protein charge when pH < PI

Answer 18

Positive

Question 19

Order in which proton is given off

Answer 19

COO–> R group –> NH3

Question 20

Enzymes that facilitate Hydroxylations

Answer 20

Hydroxylases

Question 21

Principal residue of hydroxylated proteins

Answer 21

proline

Question 22

Essential element of collagen

Answer 22

Proline

Question 23

Amino acid modification involved in blood clotting cascade, bone growth, and extraosseous calcification

Answer 23

Carboxylation