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cytochromes are critical participants in the electron transport chains used in photosynthesis and cellular respiration. how do cytochromes donate and accept electrons?

Sagot :

A heme group made of iron is present in every cytochrome, and it receives electrons before giving them to something more electronegative.

How do electrons enter cytochrome c?

The iron metal core of cytochrome C is necessary for the pigment's functionality. This  iron interconverts between the Fe3+ and Fe2+ oxidation states throughout the electron transport process, enabling electron donation and acceptance.

What are cytochromes, and how do they contribute to respiration and photosynthesis?

In the process of photosynthesis, an important role for the cytochrome complex is played in the electron transport involving the membranes of the thylakoids. Through plastoquinone, it receives electrons from Photosystem II and helps in proton transport across the membrane.

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