Question

Which of the following cell organelles lacks DNA and bounding membrane?

• A. Ribosome
• B. Plastid
• C. Nucleolus
• D. Plasmid

Answer 1

The correct option is A Ribosome

Ribosomes are naked particles made up of rRNA and proteins. They lack DNA and the bounding membrane. Plasmids are extrachromosomal DNA molecules of bacteria. Plastids are large membrane bound organelles of the eukaryotic plant cell.

The nucleolus is present inside the eukaryotic nucleus. It is without membrane but is a site of active RNA synthesis on DNA template. So, the correct option is A.