G3P is used to either regenerate RuBP or can be used to synthesise sugars, for example glucose. Light-Dependent Reactions. During the steps in the light reaction stage, energy from the sun converts into chemical energy, while the Calvin cycle brings carbon dioxide fixation. The reactions of carbon fixation are controlled by specific enzymes. How Photosynthesis Happens. The Calvin Cycle is the temperature-dependent part of photosynthesis. dark reactions: the second stage of photosynthesis in which high energy molecules (ATP and NADPH) help to fuel reactions that convert carbon dioxide into glucose. In the light stage of photosynthesis, the chloroplast absorbs the light of the sun. Photosynthesis is defined as one process, but contains two distinct stages, which in turn break down into a series of steps. In plants, carbon dioxide (CO2) enters the chloroplast through the stomata and diffuses into the stroma of the chloroplast—the site of the Calvin cycle reactions where sugar is synthesized. 2. Others call it the Calvin-Benson cycle to include the name of another scientist involved in its discovery (Figure 1). Read about our approach to external linking. the energy lost by electrons while in the electron transport chain is used to pump _____ ions in the thylakoid. The second stage is where the Calvin cycle comes in. In the first stage, chemical reactions use energy from light to produce ATP and NADPH. The captured light energy is used to produce sugars and oxygen from water and carbon dioxide. It takes place inside the chloroplasts of plant cells. second major stage of photosynthesis; light independent; converts carbon dioxide into sugar. dark reactions occur in the stroma and do not require sunlight. It gets turned into glucose. 1. kellykalden7. Light absorption. The Calvin cycle. Religious, moral and philosophical studies. Carbon dioxide enters the cycle and becomes attached to RuBP (ribulose bisphophate) by the enzyme RuBisCO to produce 3-phosphoglycerate (3PG). The process of photosynthesisoccurs in two stages: Light-dependent reaction or light reaction Light independent reaction or dark reaction In the second stage, called the light-independent reaction (formerly called the dark reaction), NADPH provides the hydrogen … The second stage of photosynthesis is the production of glucose from carbon dioxide. In the chloroplasts, ATP is a product of the first stage of photosynthesis, and it provides energy for the second stage. However, the reactions in stage 4 are not confined to chlorophyll a. With the cycle complete, it is available to be combined with carbon This forms an electrochemical gradient. Answer. ahlukileoiand 3 otherslearned from this answer. In plants, photosynthesis typically occurs within the chloroplasts located in plant leaves. Photosynthesis Summary . Farmers can alter genes, control pests and ensure acceptable well-being to increase yields of plants and livestock. Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH. The Calvin Cycle. Our tips from experts and exam survivors will help you through. Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH. Electron transport chain. Adenosine triphosphate, or ATP, is an organic compound that provides energy for many different metabolic processes. by ATP and combined with hydrogen from NADPH to form G3P (glyceraldehyde-3-phosphate). The glucose produced through photosynthesis can also passed into other biosynthetic pathways to form DNA. Figure: The two stages of photosynthesis: Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions). Photosynthesis occurs in two stages. 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