Which one of the following cell organelles does NOT possess its own genetic material encoding proteins ?
[amp_mcq option1=”Ribosome” option2=”Nucleus” option3=”Mitochondria” option4=”Chloroplast” correct=”option1″]
This question was previously asked in
UPSC NDA-1 – 2019
The correct answer is A) Ribosome.
Cell organelles like the nucleus, mitochondria, and chloroplasts contain their own DNA which encodes some of their proteins. Ribosomes are composed of ribosomal RNA (rRNA) and proteins, but they do not possess their own DNA. The genes for ribosomal RNA are located in the nuclear DNA, and ribosomal proteins are synthesized in the cytoplasm based on mRNA transcribed from nuclear DNA.