BIOMOLECULES AND ENZYMES

BIOLOGY

NUCLEIC ACIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many codons (triplet sequences) are needed to specify five amino acids?
A
5
B
10
C
3
D
12
Explanation: 

Detailed explanation-1: -One amino acid codes triplet three nucleotide. So, after addition of adenosine residue the total number of nucleotide is 16. So five amino acids will be coded by the mRNA sequence.

Detailed explanation-2: -Amino acids of a polypeptide A polypeptide of 5 amino acids is analogous to a chain with five links. It has two end amino acids, and three internal links. Breaking our chain into smaller pieces is similar to cutting links of a chain and producing smaller chains.

Detailed explanation-3: -Hence, the correct answer is ‘Two amino acids’.

Detailed explanation-4: -Figure 1: In mRNA, three-nucleotide units called codons dictate a particular amino acid.

Detailed explanation-5: -Multiple codons can code for the same amino acid. The codons are written 5’ to 3’, as they appear in the mRNA.

There is 1 question to complete.