What are the differences between the light dependent and light independent reactions of photosynthesis?

The light-dependent reac-tions require light and water, occur in the thylakoids, and produce ATP and NADPH. The light-independent reactions require carbon dioxide, occur in the stroma, and produce high-energy sugars. What are the three primary factors that affect the rate of photosynthesis?
A.

What happens in the light dependent and light independent reactions of photosynthesis?

The light-independent reactions, or dark reactions, of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose. These reactions occur in the stroma, the fluid-filled area of a chloroplast outside the thylakoid membranes. They are also known as dark reactions.
  • What happens in the light dependent reaction?

    At the end of the light-dependent reactions, chloroplasts have converted and stored solar energy in the chemical bonds of ATP, and produced high-energy electrons stored as NADPH. Chloroplasts use this energy to drive the light independent reactions that produce the final sugar molecules.
  • Where do the light dependent reactions of photosynthesis take place?

    In photosynthesis, the light-dependent reactions take place on the thylakoid membranes. The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place.
  • What happens to the water molecules in the light reactions of photosynthesis?

    Light reactions happens in the thylakoid membrane, and the calvin cycle happens in the stroma. What happens to water molecules in the light reactions? It's broken apart and the electrons go to photosystem II. Then they pump H+ into the thylakoids, and are used to make ATP out of ADP.
B.

What is the light dependent reaction of photosynthesis?

Light-Dependent Reactions of Photosynthesis. The first major set of processes in photosynthesis, in which light energy is initially converted into chemical energy as ATP and NADPH, takes place across the chloroplast thylakoid membranes, between the chloroplast stroma and the thylakoid space.
C.

What is the energy source for light dependent reactions?

The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.
  • What are the reactants and products of the light dependent reaction?

    Chapter 6: Photosynthesis
    Light-dependent ReactionLight-independent Reaction
    2. Products are ATP, NADPH, and oxygen; and the reactant is water.2. The products is glucose, and reactants are ATP, NADPH, and CO2.
    3. This reaction occurs in thylakoid membranes.3. This reaction occurs in stroma.
  • What is a light dependent reaction?

    Light-Dependent Reactions of Photosynthesis. The first major set of processes in photosynthesis, in which light energy is initially converted into chemical energy as ATP and NADPH, takes place across the chloroplast thylakoid membranes, between the chloroplast stroma and the thylakoid space.
  • What is a waste product of the light dependent reaction?

    Water, when broken, makes oxygen, hydrogen, and electrons. These electrons move through structures in chloroplasts and by chemiosmosis, make ATP. The hydrogen is converted to NADPH which is then used in the light-independent reactions. Oxygen diffuses out of the plant as a waste product of photosynthesis.

Updated: 21st October 2019

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