Question

The main events of photosynthesis (higher level)is _______ .

A. light Absorption, Electron Transport Chain, Carbon Fixation, ATP Production
B. photolysis, Stroma Reactions, Calvin Cycle, Oxygen Evolution
C. photon Capture, NADPH Synthesis, CO2 Uptake, Glucose Formation
D. chlorophyll Activation, Glycolysis, Hydrogen Peroxide Production, Starch Storage

Answer 1

The main events of photosynthesis at a higher level are light absorption, electron transport chain, carbon fixation, and ATP production, which occur during the light reactions and the Calvin cycle.

Step-by-step explanation:

The main events of photosynthesis at a higher level are light absorption, electron transport chain, carbon fixation, and ATP production. This process can be broadly divided into two stages: the light reactions and the Calvin cycle.

During the light reactions, chlorophyll in the thylakoid membranes absorbs sunlight. This event initiates a sequence that activates photosystem II and leads to the formation of an electrochemical gradient, which then allows ATP synthase to generate ATP. Simultaneously, photosystem I is activated to assist in the production of NADPH, another crucial carrier of energy.

The Calvin cycle utilizes the ATP and NADPH produced during the light reactions. Here, CO₂ from the environment is fixed using the enzyme RuBisCO to form three-carbon compounds, which are then converted to glucose using the energy from ATP and NADPH.