How does the light and dark reaction takes place during photosynthesis?
The chloroplast is involved in both stages of photosynthesis. The light reaction takes place in the thylakoid discs. Note that the dark reaction takes place in the stroma (aqueous fluid surrounding the stacks of thylakoids) and the cytoplasm.
Which reaction of photosynthesis can happen in the light or in the dark?
The reactions that make up the process of photosynthesis can be divided into light-dependent reactions, which take place in the thylakoids, and light-independent reactions (also known as dark reactions or the Calvin cycle), which take place in the stroma.
What happens during the light phase of photosynthesis?
During the light-dependent stage (“light” reactions), chlorophyll absorbs light energy, which excites some electrons in the pigment molecules to higher energy levels; these leave the chlorophyll and pass along a series of molecules, generating formation of NADPH (an enzyme) and high-energy ATP molecules.
What is light phase and dark phase?
The light reaction is the initial stage of photosynthesis which traps light energy to produce ATP and NADPH, whereas dark reaction is the second step of photosynthesis which utilizes the energy from ATP and NADPH to produce glucose.
What is dark stage of photosynthesis?
The dark stage of photosynthesis is an intricate process where NADPH and ATP are used to produce carbohydrate molecules (or sugars). Unlike the light phase, it can happen in light or darkness.
What is dark phase of photosynthesis?
Where does Calvin cycle or dark reaction occur?
The Calvin cycle is also called the dark reactions or light-independent reactions because it is the part that doesn’t need energy from the sun to happen. The Calvin cycle takes place within the stroma of the chloroplast.
What is dark phase in photosynthesis?
What is the dark phase?
1. Dark stagea. Dark stage, also known as biosynthetic or assimilatory, is the second stage in photosynthesis; in this stage, a cluster of reactions – solar light is not needed – is produced, and they convert carbon dioxide – among other complexes – into sugars.
What is light reaction and dark reaction?
The main difference between light and dark reaction is that light reaction is the first stage of photosynthesis, which traps light energy in order to produce ATP and NADPH whereas dark reaction is the second stage of photosynthesis, which produces glucose by using the energy form ATP and NADPH produced from the light …
What is a dark phase?
Dark phase or light-independent reactions is a synthetic process in which carbon dioxide is reduced to glucose. This process takes place in stroma and utilizes ATP and NADPH2. These reactions take the products of the light-dependent reactions and perform further chemical processes on them.
What happens during dark stage of photosynthesis?
In the dark reaction, plants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose. It takes place in the stroma of the chloroplast.
What are the differences between light and dark reactions?
The main difference between light and dark reaction is that light reaction is the first stage of photosynthesis, which traps light energy in order to produce ATP and NADPH whereas dark reaction is the second stage of photosynthesis, which produces glucose by using the energy form ATP and NADPH produced from the light reaction.
Which events occur in the light reactions of photosynthesis?
The equation below summarizes the events occurring during the light reactions of photosynthesis. The three components of the light reactions are: Oxidation of water. Reduction of NADP+. Synthesis of ATP from ADP and Pi. The Biology Project.
What are the steps of light dependent reactions in photosynthesis?
Photosynthesis is a photo-chemical reaction involving 2 main steps, i.e. Light reaction or Hill’s reaction and Dark reaction or Blackmann’s reaction. Light reaction occurs in presence of light. Dark reaction can occur in absence of light but is dependent upon the end product of light reaction.
Light reaction and dark reaction are the two types of sequential processes that occur during the photosynthesis of plants. Light reaction occurs in the thylakoid membrane of chloroplast whereas the dark reaction occurs in the stroma of the chloroplast .