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Question

Who gave the cytochrome pump theory?

A
Sachs
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B
Lundegardh
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C
Bose and Renner
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D
Bennet and Clark
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Solution

The correct option is B Lundegardh
Lundegardh in 1954 gave the cytochrome pump theory.
This theory supports, that there is direct correlation between the anion absorption and respiration. The transport of anions takes place through cytochrome system, so the cytochrome acts as carrier.
The main assumptions of this theory are:
1. The protons and electrons are produced in the inner surface of the membrane.
2. Anions are picked up by the cytochrome from the outer membrane and is transported into the inner surface.
3. The electrons are released by taking the anions in its place.
4. Anions are absorbed by the cytochrome chain by the active process.
5.Cations absorption takes place passively.

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