Question

DNA is not present in
A. Nucleus
B. Mitochondria
C. Chloroplast
D. Ribosomes

Answer 1

Hint: The body needs ahead to make it function similarly a cell needs a DNA or RNA (any genetic material) to make the cell function. It does all the protein production with the help of ribosomes. The proteins from the enzymes which are the basics for all the metabolisms in our body.

Complete answer:
DNA is the genetic makeup of most of the organisms. It is the nucleic acid which has all the genes which we get from our parents.
Option A: Nucleus: It is the house for the genetic makeup of the organism. It has all the chromosomal DNA so is called nuclear DNA. Here the genes work to make the functioning of the body.
Option B: Mitochondria: Mitochondria is the semi autonomous organelle. They have the singular stranded DNA.
Option C: Chloroplast: It is also the semi autonomous organelle having the ss DNA.
Option D: Ribosomes: They are the protein factories. They have the ribosomal RNA and protein but lack its DNA. It does not have the genes of its own but forms the protein for the body.

So the answer is option D: Ribosomes.

Note: The DNA is so long to stretch itself from the sun to earth 600 times. All the genetic makeup of an organism is 99.9% the same. Thus we are unique at 0.1 % of our DNA only. We have almost 3 billion pairs of base pairs of DNA. We can know about the ancestry via our DNA. Evolution can be studied through genetic material.