Question

Identify A and B in the given diagram :

• A. A – Ribosome, B – large sub unit
• B. A – Large subunit, B – Small subunit
• C. A – Small subunit, B - Ribosome
• D. A – Small subunit, B – Large subunit

Answer 1

The correct option is D A – Small subunit, B – Large subunit

The given diagram is of ribosome. So, A – Small subunit, B – Large subunit.

Ribosome consists of one large and one small subunit. Eukaryotes have 80S ribosomes while prokaryotes have 70S ribosomes. Four binding sites are present in the ribosomes one for mRNA and 3 for tRNA.
So the correct answer is B.