Biochemistry - Amino Acids Part I - NEET Pattern

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1. Leucine is a purely Ketogenic aminoacid

True

False

About This Quiz

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

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2. Lysine is the precursor of Carnitine

True

False

3. Serine is precursor of Glycine & cysteine

True

False

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

Statement A correct & Statement B wrong. Statement B is not the reason for Statement A

Both statements are wrong

Both are correct and B is the reason for A

Statement A Wrong & Statement B correct. Statement B is not the reason for Statement A

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

Explanation

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

5. Tyrosine contains an INDOLE ring

True

False

Tyrosine contains phenol ring.

Explanation

Tyrosine contains phenol ring.

6. All are true EXCEPT

SGOT is ALT

SGPT is ALT

Alanine on transamination gives Pyruvate

Aspartate on transamination gives Oxaloacetate

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

Explanation

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

7. MULTIPLE CORRECT OPTIONS MAY BE PRESENT
constituents of Creatine

Glycine

Arginine

Methionine

Histidine

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8. MULTIPLE CORRECT OPTIONS MAY BE PRESENT Liportrophic factors are

Choline

Mehtionine

Beataine or Trimethyl glycine

None of the above

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

Methionine

Cysteine

Taurine

Cystine

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

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