Salim
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1

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In the process of transcription, the flow of genetic information is from

(A) DNA to DNA (B) DNA to protein (C) RNA to protein (D) DNA to RNA
salim
19/02/2013

1

Answers

Which of the following genes of the E.coli “Lac operon” codes for a constitutive protein?

(A) The ‘a’ gene (B) The ‘i’ gene (C) The ‘c’ gene (D) The ‘z’ gene
salim
19/02/2013

1

Answers

Nonsense codons bring about

(A) Amino acid activation (B) Initiation of protein synthesis (C) Termination of protein synthesis (D) Elongation of polypeptide chains
salim
19/02/2013

1

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Translocase is an enzyme required in the process of

(A) DNA replication (B) RNA synthesis (C) Initiation of protein synthesis (D) Elongation of peptides
salim
19/02/2013

1

Answers

Polysemes do not contain

(A) Protein (B) DNA (C) mRNA (D) rRNA
salim
19/02/2013

1

Answers

Which pathway is correct for catabolism of purines to form uric acid?

(A) Guanylate→Adenylate→Xanthine→hypo-xanthine→Uric acid (B) Guanylate→inosinate→Xanthine→hypo-xanthine→Uric acid (C) Adenylate→Inosinate→Xanthine hypo-xanthine→Uric acid (D) Adenylate→Inosinate→hypoxanthine Xanthine→Uric acid
salim
19/02/2013

1

Answers

Synthesis of GMP and IMP requires the following:

(A) NH 3 NAD+ , ATP (B) Glutamine, NAD + , ATP (C) NH 3 , GTP, NADP + (D) Glutamine, GTP, NADP +
salim
19/02/2013

1

Answers

All are true about lesch-nyhan syndrome except

(A) Produces self-mutilation (B) Genetic deficiency of the enzyme (C) Elevated levels of uric acid in blood (D) Inheritance is autosomal recessive
salim
19/02/2013

1

Answers

Two nitrogen of the pyrimidines ring are obtained from

(A) Glutamine and Carbamoyl-p (B) Asparate and Carbamoyl-p (C) Glutamate and NH 3 (D) Glutamine and NH 3
salim
19/02/2013
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