Biology The Unit of Life ( Cell - The Unit of Life ) Statement Based Questions Single Correct MCQ
Published on: August 11, 2026

Which of the following statement of a bacterial cell is/are correct?

(i) Mesosome is formed by the extensions of plasma membrane into the cell.

(ii) The pili are elongated tubular structures made up of a protein.

(iii) Flagellum is composed of filament, hook and basal body.

(iv) Ribosomes are about 30 nm by 50 nm in size.

A
(i), (ii) and (iii)
B
(ii) and (iv)
C
All of the above
D
None of the above

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