How Light-Dependent Reactions Work. Choose from 500 different sets of light dependent reaction steps flashcards on Quizlet. Next lesson. Learn light dependent reaction steps with free interactive flashcards. The light-dependent reactions. The Calvin cycle. Conceptual overview of light dependent reactions. Most photosynthetic organisms capture visible light, although there are some that use infrared light. Light-independent reaction is dependent on the products of the light-dependent reaction. A photon of light energy travels until it reaches a molecule of chlorophyll. Cellular respiration. The light-dependent reactions begin in photosystem II. A basic quiz of the light-dependent reaction in photosynthesis. Light dependent reactions. Four major protein complexes are located in the thylakoid membrane: Photosystem II (PSII), Cytochrome b6f complex, Photosystem I (PSI), and ATP synthase that works together in carrying out the light reaction in plants. The light-dependent reactions begin in a grouping of pigment molecules and proteins called a photosystem. Photosystems exist in the membranes of thylakoids. In PSII, energy from sunlight is used to split water, which releases two electrons, two hydrogen atoms, and one oxygen atom. Just as the name implies, light-dependent reactions require sunlight. The process of light reaction is given below- However, vice versa is not true. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light reactions absorb light and harness the energy to power electron transfers. Here is an explanation in technical terms: To begin with water is taken … Light reaction is the first stage of photosynthesis process in which solar energy is converted into chemical energy in the form of ATP and NADPH. The process of photosynthesis is made up of light dependent reactions (the photo’ part) and sugar making or light independent reactions (the synthesis part). In the light-dependent reactions, energy from sunlight is absorbed by chlorophyll and converted into stored chemical energy, in the form of the electron carrier molecule NADPH (nicotinamide adenine dinucleotide phosphate) and the energy currency molecule ATP (adenosine triphosphate). Light-Dependent Reactions. One or more statements are misplaced. The light-dependent reaction takes place within specialized membrane discs of the chloroplast, known as thylakoid. After NADP reductase transfers the electron from ferredoxin to NADP+, the NADP+ required how many electrons so that it can be reduced into NADPH? reactants of photosynthesis carbon dioxide and water products of photosynthesis glucose and oxygen stroma liquid filled area of the chloroplast; outside of the thylakoids granum stack of thylakoids chlorophyll green pigment in plants that absorbs light energy used to carry out photosynthesis Where do light dependent reactions occur? A pigment molecule in the photosystem absorbs one photon, a quantity or “packet” of light energy, at a time. The protein complexes and the pigment molecules help in the production of NADPH and ATP. grana where do light independent reactions occur? Practice: Photosynthesis. Both the light-dependent reactions and the Calvin cycle Light-dependent reactions Calvin cycle require water synthesize ATP and NADPH use CO2 produce sugars need ribulose bisphosphate use chlorophyll to capture light energy take place in the chloroplasts of plants generate oxygen gas Incorrect. Products of these reactions are adenosine triphosphate and reduced nicotinamide adenine dinucleotide phosphate (NADPH). Up Next. The light-dependent reactions begin in a grouping of pigment molecules and proteins called a photosystem. The Calvin cycle. The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. Sort by: Top Voted. Photosynthesis review. 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