The absorptive peaks in the absorption spectrum of chlorophyll b are at the wavelength of:
Correct answer: A. 453 nm and 642 nm
- A. 453 nm and 642 nm
- B. 430 nm and 662 nm
- C. 480 nm and 520 nm
- D. 500 nm and 700 nm
Explanation
Among the given options, the most accurate ones are 453 nm and 642 nm. These wavelengths represent the two main absorption peaks of chlorophyll b, showing its ability to absorb light efficiently in both the blue and red regions of the visible spectrum. This absorption pattern allows chlorophyll b to assist chlorophyll a in capturing a broader range of light energy for photosynthesis. While the other options refer to wavelengths either absorbed by chlorophyll a or in regions where absorption is minimal, the combination of 453 nm and 642 nm accurately reflects the true absorption behaviour of chlorophyll b.
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
Pick up the one having the broadest valley:
An absorption spectrum of chlorophylls has:
The absorption spectrum for chlorophyll indicates that absorption is maximum in:
Photosynthesis is a process in which:
The reactions of photosynthesis consist of:
In photosynthesis, reducing power and assimilatory power are synthesized during: