Biochemistry - Amino Acids Part I - NEET Pattern

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NEET pattern of questions Single best answer Multiple best answers True or False Assertion and reason type

Questions and Answers

1.

MULTIPLE CORRECT OPTIONS MAY BE PRESENT Liportrophic factors are
- A.
  
  Choline
- B.
  
  Mehtionine
- C.
  
  Beataine or Trimethyl glycine
- D.
  
  None of the above
Correct Answer(s)
A. Choline
B. Mehtionine
C. Beataine or Trimethyl glycine
2.

Assertion and reason type Statement A: D - Glycine is Dextrorotatory Statement B : L - Glycine is Levorotatory
- A.
  
  Statement A correct & Statement B wrong. Statement B is not the reason for Statement A
- B.
  
  Both statements are wrong
- C.
  
  Both are correct and B is the reason for A
- D.
  
  Statement A Wrong & Statement B correct. Statement B is not the reason for Statement A
Correct Answer
B. Both statements are wrong

Explanation
See, Glycine is optically inactive as the carbon is attached with 2 H. So there is no rotation.

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3.

MULTIPLE CORRECT OPTIONS MAY BE PRESENT constituents of Creatine
- A.
  
  Glycine
- B.
  
  Arginine
- C.
  
  Methionine
- D.
  
  Histidine
Correct Answer(s)
A. Glycine
B. Arginine
C. Methionine
4.

Leucine is a purely Ketogenic aminoacid
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
5.

All are true EXCEPT
- A.
  
  SGOT is ALT
- B.
  
  SGPT is ALT
- C.
  
  Alanine on transamination gives Pyruvate
- D.
  
  Aspartate on transamination gives Oxaloacetate
Correct Answer
A. SGOT is ALT

Explanation
http://themedicalbiochemistrypage.org/images/alt-reaction.jpg

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6.

Serine is precursor of Glycine & cysteine
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
7.

MULTIPLE CORRECT OPTIONS MAY BE PRESENT Sulfhydryl group containing amino acid(s)
- A.
  
  Methionine
- B.
  
  Cysteine
- C.
  
  Taurine
- D.
  
  Cystine
Correct Answer
B. Cysteine

Explanation
All the 4 aminoacids contain Sulphur. But only Cysteine contains SH group.
Cystine --> dimer formed by the oxidation of two cysteine
Taurine --> derivative of cysteine, constituent of bilesalt

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8.

Lysine is the precursor of Carnitine
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
9.

MULTIPLE CORRECT OPTIONS MAY BE PRESENT Glycine can form
- A.
  
  Purines
- B.
  
  Hemes
- C.
  
  Serine
- D.
  
  CO2
- E.
  
  Oxalate
Correct Answer(s)
A. Purines
B. Hemes
C. Serine
D. CO2
E. Oxalate

Explanation
Yes, Glycine can form all of these

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10.

Tyrosine contains an INDOLE ring
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Tyrosine contains phenol ring.

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Current Version
Mar 21, 2022

Quiz Edited by
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Apr 09, 2012

Quiz Created by
Karthi_dr

Biochemistry - Amino Acids Part I - NEET Pattern

MULTIPLE CORRECT OPTIONS MAY BE PRESENT Liportrophic factors are

Assertion and reason type Statement A: D - Glycine is Dextrorotatory Statement B : L - Glycine is Levorotatory

MULTIPLE CORRECT OPTIONS MAY BE PRESENT constituents of Creatine

Leucine is a purely Ketogenic aminoacid

All are true EXCEPT

Serine is precursor of Glycine & cysteine

MULTIPLE CORRECT OPTIONS MAY BE PRESENT Sulfhydryl group containing amino acid(s)

Lysine is the precursor of Carnitine

MULTIPLE CORRECT OPTIONS MAY BE PRESENT Glycine can form

Tyrosine contains an INDOLE ring