Question

In the bacteria :
(1) mesosome is present
(2) nucleoid represents the genome
(3) ribosomes are found in cytoplasm
(4) histone proteins complexed with DNA

• A. 1, 2 and 3 are correct
• B. 1 and 2 are correct
• C. 1, 2 and 4 are correct
• D. 1 and 3 are correct

Answer 1

Answer: (A)

Mesosomes are present as infolding or intrusions of the plasma membrane of bacteria. The bacterial cytoplasm contains many ribosomes of $100\mathring{A}$ diameter. The genetic material in bacterial cell is DNA. The bacterial genome is thus represented by a single circular double helical DNA molecule.