As compared to chlorophyll a, chlorophyll b has:
Correct answer: C. Two less hydrogen atoms and one more oxygen atom
- A. Two more hydrogen atoms
- B. One less oxygen atom
- C. Two less hydrogen atoms and one more oxygen atom
- D. Two more hydrogen atoms and one less oxygen atom
Explanation
Chlorophyll a and chlorophyll b differ primarily in one functional group attached to the porphyrin ring. In chlorophyll a, there is a methyl group (-CH₃), whereas in chlorophyll b, this group is replaced by a carbonyl group (-CHO). This difference accounts for chlorophyll b having two fewer hydrogen atoms and one more oxygen atom compared to chlorophyll a. The incorrect options either add hydrogen or remove oxygen, which are not characteristic of chlorophyll b's structure.
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 and chlorophyll b differ from each other with respect to the number of:
Chlorophyll a and chlorophyll b differ from each other in only one of the following:
The chlorophyll molecule is embedded in the hydrophobic core of:
As compared to chlorophyll b, chlorophyll a has:
Chlorophyll a can be converted into chlorophyll b by replacing:
Chlorophyll b can be converted into chlorophyll a by replacing: