Question 1

Which of the following amino acids acts as precursor to hormones epinephrine, norepinephrine and dopamine?

L-2-Amino-3-(4-hydroxyphenyl)propanoic acid
2-Amino-3-hydroxybutanoic acid
(2S)-2-amino-3-(1H-indol-3-yl)propanoic acid
Pyrrolidine-2-carboxylic acid
2-Amino-3-phenylpropanoic acid

Answer

Correct Option: A

Question 2

Which of the following acts as metabolic precursor to amino acid aspartate?

Pyruvate
Oxaloacetate
Ribose 5-phosphate
α-Ketoglutarate
3-Phosphoglycerate

Answer

Correct Option: B

Question 3

Which of the following amino acids are both glucogenic and ketogenic?

Glycine
Phenylalanine
Threonine
Proline
Tryptophan

1, 2 and 4
1, 4 and 5
2, 3 and 4
2, 3 and 5
3, 4 and 5

Answer

Correct Option: D

Question 4

Desufhydrase deaminates

cystine
serine
threonine

Only 1
Only 2
Only 3
1 and 2
2 and 3

Answer

Correct Option: A

Question 5

Which of the following are non-essential amino acids?

2-Amino-4-methylpentanoic acid
Pyrrolidine-2-carboxylic acid
2-Aminopropanoic acid
2-Amino-3-phenylpropanoic acid
2-amino-3-methylbutanoic acid
L-2-Amino-3-(4-hydroxyphenyl)propanoic acid

1, 2 and 5
1, 3 and 6
2, 4 and 5
2, 3 and 6
3, 4 and 5

Answer

Correct Option: D

Question 6

Which of the following statements are not correct regarding transamination?

P. Transamination means transfer of amide nitrogen from a donor molecule to a acceptor molecule. Q. Liver is the main site for transamination. R. Transamination reactions are irreversible. S. Transamination reactions are catalysed by aminotransferases.

P and Q
P and R
P and S
Q and R
Q and S

Answer

Correct Option: B

Question 7

Which of the following is/are anaerobic dehydrogenase(s)?

L-amino acid oxidase
D-amino acid oxidase
Glutamate dehydrogenase

Only 1
Only 2
Only 3
1 and 2
2 and 3

Answer

Correct Option: C

Question 8

Which of the following enzymes needs pyrindoxal phosphate as coenzyme?

P. D-amino acid oxidase Q. Dehydratase R. Desulfhydrase S. Glutamate dehydrogenase

P and Q
P and R
P and S
Q and R
Q and S

Answer

Correct Option: D

Question 9

Which of the following amino acids can act as metabolic precursor for synthesis of HO₂CCH(NH₂)CH₂SH and NH₂CH₂COOH?

Aspartate
Glutamate
Phenylalanine
Serine
Threonine

Answer

Correct Option: D

Question 10

Which of the following is a pair of exclusively ketogenic amino acids?

Leucine and isoleucine
Leucine and Lysine
Lysine and tyrosine
Isoleucine and lysine
Leucine and tyrosine

Answer

Correct Option: B

Question 11

Which of the following amino acids in proteins undergo(es) phosphorylation?

2-Amino-3-hydroxypropanoic acid
2-Amino-3-hydroxybutanoic acid
Pyrrolidine-2-carboxylic acid

Only 1
Only 2
Only 3
1 and 2
2 and 3

Answer

Correct Option: D

Question 12

Match the following:


Column – I
	Column – II
A. Alanine	1. α-ketoglutarate
B. Glutamine	2. Pyruvate
C. Histidine	3. 3-phosphoglycerate
D. Serine	4. Ribose 5-phosphate

A - 4, B - 3, C - 2, D - 1
A - 2, B - 1, C - 3, D - 4
A - 2, B - 1, C - 4, D - 3
A - 3, B - 2, C - 4, D - 1
A - 1, B - 2, C - 3, D - 4

Answer

Correct Option: C

Question 13

Match the following:


Column – I	Column – II
A. Glutamine	1. K
B. Lysine	2. Q
C. Tryptophan	3. W
D. Tyrosine	4. Y

A - 3, B - 4, C - 2, D - 1
A - 2, B - 1, C - 3, D - 4
A - 2, B - 3, C - 1, D - 4
A - 3, B - 2, C - 1, D - 4
A - 3, B - 1, C - 4, D - 2

Answer

Correct Option: B

Question 14

Match the following:


Column – I	Column – II
P. Xanthoproteic reaction	1. Identification of tryptophan
Q. Edman’s reaction	2. Determination of the amino acid sequence of a protein
R. Millon’s test	3. Identification of tyrosine
S. Hopkins-Cole test	4. Detection of aromatic amino acids

P – 1, Q – 2, R – 3, S – 4
P – 1, Q – 2, R – 4, S – 3
P – 2, Q – 1, R – 4, S – 3
P – 4, Q – 2, R – 3, S – 1
P – 4, Q – 3, R – 2, S – 1

Answer

Correct Option: D

Question 15

Which of the following sets represents essential amino acids?

Tryptophan, Histidine, Aspartic acid, Proline, Leucine
Valine, Leucine, Tryptophan, Lysine, Histidine
Alanine, Proline, Aspartic acid, Glycine, Cysteine
Valine, Leucine, Aspartic acid, Glycine, Cysteine
Alanine, Valine, Lysine, Glycine, Tryptophan

Answer

Correct Option: B

Description: GAte
Number of Questions: 15
Created by: Adhira Saini
Tags: GAte Essential Amino Acids and Fatty Acids

Amino Acids (GATE)

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