The following statement is true for the absorption spectra of photosynthesis:
Correct answer: B. Chlorophyll a and b have different absorption spectra.
- A. Chlorophyll a and b have the same absorption spectra.
- B. Chlorophyll a and b have different absorption spectra.
- C. Chlorophyll a and carotenoids have the same absorption spectra.
- D. Carotenoids and chlorophyll b have the same absorption spectra.
Explanation
Yes, chlorophyll-a and chlorophyll-b, the two main types of chlorophyll found in photosynthetic organisms, have slightly different absorption spectra. Chlorophyll-a and chlorophyll-b absorb light most efficiently in the blue and red regions of the electromagnetic spectrum, but they have different absorption peaks. While chlorophyll-a is directly involved in the conversion of light energy to chemical energy in the photosystems, chlorophyll-b expands the range of light that can be captured and utilized for photosynthesis.
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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.
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