eukaryotes have the fully organised mature ribosomes of the ....... type

a)60s b)40s c)80s d)each of these.

the answer given in my book is c. bt shudnt it be d? as 80s robosomes are composed of 60s and 40s units?

Dear Student

The question asks us that which type of ribosome is present in eukaryotic cells which is 80s only. Yes, you are correct that it is further divided into two subunits 60s and 40s but a single subunit or even both of them are not present individually in the cell, so we cannot consider them.