First slide

The Electron Transport

Question

Which of the following is most probable consequence experienced by photosynthetic pigments on absorbing light energy?

Moderate

A

Pigment molecules get reduced
B

Pigment molecules loose potential energy
C

Electrons in pigment molecules get excited
D

Sugar molecules are formed immediately

Solution

When reaction centre chlorophyll a absorbs photons of suitable wavelengths, their electrons become excited and jump into an orbit farther from the atomic nucleus. These electrons are picked up by an electron acceptor which passes them through an electron transport system consisting of cytochromes and others.

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