LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which is NOT a polymer of nucleotides?
A
DNA
B
tRNA
C
mRNA
D
ATP
Explanation: 

Detailed explanation-1: -Unlike adenosine monophosphate in RNA, ATP does not polymerise with other nucleotides; it does not condense into a polymer. And it has 3 phosphate groups rather than the single phosphates in RNA and (DNA) nucleotides.

Detailed explanation-2: -Adenosine triphosphate (ATP) is the source of energy for use and storage at the cellular level. The structure of ATP is a nucleoside triphosphate, consisting of a nitrogenous base (adenine), a ribose sugar, and three serially bonded phosphate groups.

Detailed explanation-3: -ATP (adenosine triphosphate) has three phosphate groups that can be removed by hydrolysis to form ADP (adenosine diphosphate) or AMP (adenosine monophosphate). If there are no phosphates at all, the molecule is referred to as a “nucleoside", rather than a “nucleotide".

There is 1 question to complete.