Which of the following cell organelles play the most significant role in protein synthesis?

Which one of the following cell organelles may play a role in expelling excess water and wastes in case of unicellular organisms?

Which one of the following cell organelles contains DNA?

Which one of the following cell organelles is known as 'suicide bags' of a cell ?

Cell wall is absent in which one of the following organisms?

In a plant cell, which one of the following contains their own DNA?