Table of Contents
Which process occurs during the light-dependent reaction in photosynthesis?
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 is the mechanism of light reaction?
In light reactions, energy from the sunlight is absorbed by the pigment chlorophyll and is converted into chemical energy in the form of electron charge carrier molecules such as NADPH and ATP.
What are the 2 main processes that take place during the light-dependent reaction?
Explanation: The two main events i.e., photophosphorylation and photolysis of water. are occurred in the light-dependent reaction in photosynthesis. In the photophosphorylation, the energy rich ATP is formed by the addition of phosphate in ADP.
Which process occurs during the light-dependent reactions in photosynthesis quizlet?
Which process occurs during the light-dependent reactions in photosynthesis? Water molecules are split. ATP and NADPH are produced in the light-dependent reactions and used in the light-independent reactions.
What is light-independent in photosynthesis?
Light-independent reaction is a series of biochemical reactions in photosynthesis not requiring light to proceed, and ultimately produce organic molecules from carbon dioxide. The energy released from ATP (produced during the light reactions) drives this metabolic pathway.
Where do the light-dependent reaction occur?
Light-dependent reactions happen in the thylakoid membrane of the chloroplasts and occur in the presence of sunlight. The sunlight is converted to chemical energy during these reactions. The chlorophyll in the plants absorb sunlight and transfers to the photosystem which are responsible for photosynthesis.
Where do light-dependent reactions occur in prokaryotes?
The two parts of photosynthesis—the light-dependent reactions and the Calvin cycle—have been described, as they take place in chloroplasts.
What occurs during light-dependent reactions?
The light-dependent reactions convert light energy into chemical energy. The goal of the light-dependent reactions of photosynthesis is to collect energy from the sun and break down water molecules to produce ATP and NADPH. Each water molecule breaks down into two hydrogen (H) atoms and one oxygen (O) atom.
Where do light reactions occur?
thylakoid discs
The light reaction takes place in the thylakoid discs. There, water (H20) is oxidized, and oxygen (O2) is released. The electrons freed up from water are transfered to ATP and NADPH. The dark reaction occurs outside of the thylakoids.
What process occurs during the light dependent?
The light-dependent reactions convert light energy into chemical energy. The goal of the light-dependent reactions of photosynthesis is to collect energy from the sun and break down water molecules to produce ATP and NADPH. These two energy-storing molecules are then used in the light-independent reactions.
What process occurs during the light independent?
The light independent process (also called dark reactions or the Calvin-Benson cycle) takes place in the stroma of the chloroplast. Carbon dioxide is modified by series of chemical reactions to form carbohydrates. The energy for these reactions comes from ATP and NADPH generated during the light dependent process.
Do light reactions depend on the Calvin cycle?
The Calvin cycle refers to the light-independent reactions in photosynthesis that take place in three key steps. Although the Calvin Cycle is not directly dependent on light, it is indirectly dependent on light since the necessary energy carriers ( ATP and NADPH) are products of light-dependent reactions.