Bacteriochlorophyll Differs from Chlorophyll a and B in Structure and Function.Which

question 42

Multiple Choice

Bacteriochlorophyll differs from chlorophyll a and b in structure and function.Which of the following statements correctly contrasts these types of chlorophyll?

• A)Bacteriochlorophyll has a heme ring,but chlorophyll a and b each have a porphyrin ring.
• B)Chlorophyll a and b each have a phytol side chain,which is missing from bacteriochlorophyll.
• C)Chlorophyll a has a methyl group attached to the porphyrin ring,but bacteriochlorophyll has a formyl group.
• D)Bacteriochlorophyll has a saturated carbon-carbon bond at one location in the porphyrin ring that is not saturated in chlorophyll a and b.
• E)Chlorophyll a and b porphyrin rings bind Mg²⁺,but the bacteriochlorophyll ring binds Fe³⁺.

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