Chlorophyll b can be converted into chlorophyll a by replacing:
Correct answer: A. Carbonyl group with methyl group
- A. Carbonyl group with methyl group
- B. Magnesium with ferrous
- C. Ferrous with magnesium
- D. None of these
Explanation
Option A is correct. Chlorophyll b is converted into chlorophyll a by replacing the carbonyl group (formyl group) with a methyl group on the porphyrin ring. This enzymatic process, facilitated by protochlorophyllide oxidoreductase, is crucial in photosynthesis, allowing plants to utilize a wider spectrum of light for energy conversion. Options B and C are incorrect because they suggest replacing the central magnesium atom, which is integral to chlorophyll's structure, with ferrous, which is related to hemoglobin and not involved in chlorophyll structure. Option D is incorrect because a specific conversion process exists between chlorophyll b and chlorophyll a.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
Practise Bioenergetics
1,378 free Bioenergetics MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Bioenergetics questions
Chlorophyll a can be converted into chlorophyll b by replacing:
As compared to chlorophyll b, chlorophyll a has:
As compared to chlorophyll a, chlorophyll b has:
Some wavelengths _ by chlorophyll a are _ by chlorophyll b.
Due to slight differences in their _, the chlorophyll a and chlorophyll b show slightly different _.
Difference in the structure of different pigments: