Question

Match the items of column I with column II.

Column I	Column II
A. Mesosome	(i) Bacterial transformation
B. Plasmids	(ii) Translate mRNA
C. Chromatophores	(iii) Gram negative bacteria
D. Polysomes	(iv) infoldings of the plasma membrane
	(v) Photosynthetic prokaryotes

• A. A-(iv); B-(i); C-(v); D-(ii)
• B. A-(i); B-(ii); C-(iii); D-(iv)
• C. A-(iii); B-(i); C-(v); D-(ii)
• D. A-(iii); B-(iv); C-(i); D-(ii)

Answer 1

The correct option is A A-(iv); B-(i); C-(v); D-(ii)

Mesosomes or chondrioids are folded invaginations in the plasma membrane of gram-positive bacteria that are produced by the chemical fixation techniques used to prepare samples for electron microscopy.

Plasmid is a genetic structure in a cell that can replicate independently of the chromosomes, typically a small circular DNA strand in the cytoplasm of a bacterium or protozoan. Transformation of bacteria with plasmids is important not only for studies in bacteria but also because bacteria are used as the means for both storing and replicating plasmids.

Chromatophores are also found in membranes of phototrophic bacteria. These are used mainly for photosynthesis. They contain bacteriochlorophyll pigments and carotenoids.

Polysomes is a cluster of ribosomes held together by a strand of messenger RNA which each is translating.

So the correct answer is option A "A-(iv); B-(i); C-(v); D-(ii)".