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Macro Nutrients

Bacteriochlor...

Question

Bacteriochlorophyll differs from chlorophyll 'a' in having

A

One pyrole ring with one hydrogen

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B

One pyrole ring with two hydrogen

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C

One pyrole ring with three hydrogen

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D

One pyrole ring with four hydrogen

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Solution

The correct option is B One pyrole ring with two hydrogen
Purple sulphur bacteria and non-sulphur bacteria contain bacteria-chlorophyll,which is having 2H-atoms more than chl.a and it absorb 850-950 nm(infra-red) wavelength of light.

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Q. Choose the correct statement(s) from the following about chlorophyll :
I. Four pyrrole rings are attached to Mg by their C atoms
II. Cyclopentanone ring is attached to the tetra-isoprenoid alcohol chain.
III. Chlorophyll appears green due to absorption of red and blue light.
IV. Excitation of chlorophyll by light is a photochemical reaction

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