1) Among the 64 codons representing amino acids, the START codon is A) AUG B) UG

Question

1) Among the 64 codons representing amino acids, the START codon is

A) AUG B) UGA C) UAG D) AUG

2)Among the 64 codons representing amino acids, the STOP codon is

A) AUG B) UGA C) UAG D) AUG

3)In a protein, the first amino acid of all the 20 available amino acids will always be

A) Lysine B)methionine C) arginine D) proline E) alanine

4)In an mRNA the last condon will represent

A) Lysine B) methionine C) arginine D) proline E)none

5)The molecule that interferes with the initiation of transcription on the mRNA of some genes is the

A) operator B) promotor C) repressor

Explanation / Answer

Ans 1: A and D as it is both the same option AUG. it either specifies growing protein chain or specify the starting point of the message.

Ans 2: answer is B and C that is UGA and UAG

ans 3: B that is methionine

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