Table of Contents
What is the 3rd step of photosynthesis?
The three events that occur during the process of photosynthesis are: (i) Absorption of light energy by chlorophyll. (ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen. (iii) Reduction of carbon dioxide to carbohydrates.
What are 3 reactions of photosynthesis?
Figure 1. Light reactions harness energy from the sun to produce chemical bonds, ATP, and NADPH. These energy-carrying molecules are made in the stroma where carbon fixation takes place. The light-independent reactions of the Calvin cycle can be organized into three basic stages: fixation, reduction, and regeneration.
What is photosynthesis answer for Class 4?
Answer: photosynthesis is a process used by plants and other organisms to convert light energy into energy which is required for plants.
What are the two main step of photosynthesis explain?
The two stages of photosynthesis: Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions). Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.
What are the steps in the process of photosynthesis?
Jessica Pamment of DePaul University explains the steps of photosynthesis from the light reactions, inclusive of Photosystem II and I and chemiosmosis, to the Calvin Cycle in the light-independent reactions. Photosynthesis uses carbon dioxide, water, and light energy to make sugar.
Where does the electron transport chain begin in photosynthesis?
Photosynthesis begins with the light reactions, in which light that is absorbed moves electrons to a higher energy level. From there, the electrons enter the electron transport chain.
Why is Stage 4 of photosynthesis called the dark stage?
The reactions in stage 4 are indirectlydependent on light energy; they are sometimes called the dark reactionsof photosynthesis because they can occur in the dark, utilizing the supplies of ATP and NADPH generated by light energy. However, the reactions in stage 4 are not confined to the dark; in fact, they primarily occur during illumination.
Where does photosynthesis take place in a leaf?
A leaf may be viewed as a solar collector crammed full of photosynthetic cells. The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf, and the products of photosynthesis, sugar and oxygen, leave the leaf.