Q279
First reaction in photosynthesis is
A.
Photolysis of water
B.
Excitation of chlorophyll molecules
AnswerC.
Formation of ATP
D.
Fixation of CO2
Answer: Option B
Solution
Answer: Option B
Solution:
The first reaction in photosynthesis is the Excitation of chlorophyll molecules.When energy from light is absorbed by proteins called reaction centers that contain green chlorophyll (and other colored) pigments/chromophores. In plants, these proteins are held inside organelles called chloroplasts. In these light-dependent reactions, some energy is used to strip electrons from suitable substances, such as water, producing oxygen gas.