What is the role of Chlorophyll A and Chlorophyll B?
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Answers
Role of Chlorophyll A
The primary pigment of photosynthesis is chlorophyll A. Chlorophyll B is an accessory pigment because it is not necessary for photosynthesis to occur. All organisms that perform photosynthesis have chlorophyll A, but not all organisms contain chlorophyll B.
Chlorophyll A absorbs light from the orange-red and violet-blue areas of the electromagnetic spectrum. Chlorophyll A transfers energy to the reaction center and donates two excited electrons to the electron transport chain.
The central role of chlorophyll A is as a primary electron donor in the electron transport chain. From there on, the energy from the sun will ultimately become chemical energy that can be used by the organism for cellular processes.
Role of Chlorophyll B
One of the main distinctions between Chlorophyll A and B is in the color of the light that they absorb. Chlorophyll B absorbs blue light. Chlorophyll B’s central role is to expand the absorption spectrum of organisms.
That way, organisms can absorb more energy from the higher frequency blue light part of the spectrum. The presence of chlorophyll B in cells helps organisms convert a wider range of the energy from the sun into chemical energy.
Having more chlorophyll B in chloroplasts of cells is adaptive. Plants that receive less sunlight have more chlorophyll B in their chloroplasts. An increase in chlorophyll B is an adaption to the shade, as it allows the plant to absorb a broader range of wavelengths of light. Chlorophyll B transfers the extra energy it absorbs to chlorophyll A.
Answer:
role of chlorophyll a is to for making plants green and role of chlorophyll b is to making food in palnts by photosynthesis