$DNA$ is present in:

Which of the following are single membrane-bound organelles?

Which of the cell organelles are devoid of deoxyribonucleic acid $(DNA)$?

Identify the incorrect pair.

Read the following statements:
$(i)$. Membrane-bounded inclusion bodies are not found in prokaryotic cells.
$(ii)$. Ribosomes are the site of protein synthesis.
$(iii)$. Pili are the surface structure of the bacteria which may play a role in motility.
$(iv)$. The cell membrane of prokaryotes is structurally similar to the eukaryotes.
Choose the option with the correct statements.

Which of the following is a vital stain?