Question

Q. which is false about RNA?

a) RNA is composed of ACG and U building blocks

b) RNA can form stable double stranded structures

c) The building blocks of RNA are connected via 2' to 5' phosphodiester bonds

d) RNA is sensitive to hydrolysis in basic conditions

e) The building blocks of RNA contain ribose

Answer 1

c) The building blocks of RNA are connected via 2' to 5' phosphodiester bonds

Explanation:

Generally RNA is single stranded and unstable. RNA may become dobule stranded and stable in some organisms (mocroorganisms). But in any type of nucleic acid (both in DNA & RNA), the building blocks (nucleotides) are connected via 3' to 5' phosphodiester bonds. Each nucleoside is bound to another by a phosphate through phosphodiester bonds connecting the 5' carbon of one ribose to the 3' carbon of the next