Which of the Following is the Photochemical Event That Is

Question

Which of the following is the photochemical event that is the essence of photosynthesis?
A)conversion of H₂O to O₂
B)phosphorylation of ADP
C)light energy transduction to chemical energy
D)fixation of CO₂

Accepted Answer

The photochemical event that is the essence of photosynthesis is the conversion of light energy into chemical energy, which is known as 'light energy transduction to chemical energy'. This process occurs in the chloroplasts of plant cells and involves the absorption of light by pigments such as chlorophyll, which leads to the formation of ATP and NADPH, two molecules that are used in the synthesis of glucose. Option A refers to the production of oxygen during photosynthesis, while option B refers to the process of phosphorylation that occurs during cellular respiration. Option D refers to the incorporation of carbon dioxide into organic compounds during the Calvin cycle.