Sugar is not a direct product of the light-dependent reactions because these reactions are focused on producing ATP and NADPH, which are used to power the Calvin cycle where sugar is actually produced. The light-dependent reactions convert light energy into chemical energy in the form of these molecules, which are then used in the Calvin cycle to convert carbon dioxide into glucose.
It is not.The synthesis of sugar from CO2 and H20 requires the energy of light - it is therefore light dependent.
They are used to produce sugar during the dark reaction
The main function of the light-independent reaction, also known as the Calvin Cycle, is to convert carbon dioxide into glucose using the energy stored in ATP and NADPH generated from the light-dependent reactions of photosynthesis. This process occurs in the stroma of the chloroplast and is essential for producing carbohydrates for the plant's growth and metabolism.
Photosynthesis happens in two main stages, called the light-dependent stage and the light-independent stage. The light-independent stage is sometimes called the 'dark' stage. The light-dependent stage can only happen in the light. During this stage light is absorbed and turned into chemical energy (ATP). Oxygen is also produced. The light-independent stage can happen in the light or the dark ie it is independent of light! However, it needs substances made in the light-dependent stage so it cannot happen completely by itself. In the light-independent stage the energy trapped as ATP in the light-dependent stage is used to change carbon dioxide into sugar (glucose). The Calvin cycle converts carbon dioxide to carbohydrate. CO2 --------> (CH2O) This process requires an energy source and a hydrogen source, as well as carbon dioxide. The energy source is ATP. The hydrogen source is NADPH. Both of these substances are produced by the light-dependent reactions. For more details search this site for "calvin cycle", "light dependent" and l"ight independent". See also: http://www.phschool.com/science/biology_place/biocoach/photosynth/calvin1.html
Light-independent reactions
It is not.The synthesis of sugar from CO2 and H20 requires the energy of light - it is therefore light dependent.
The purpose of the light-independent reaction (Calvin cycle) is to use the products of the light-dependent reactions (ATP and NADPH) to convert carbon dioxide into glucose. This process occurs in the stroma of the chloroplast and is essential for producing sugars that can be used for energy and growth in plants.
They are used to produce sugar during the dark reaction
The main function of the light-independent reaction, also known as the Calvin Cycle, is to convert carbon dioxide into glucose using the energy stored in ATP and NADPH generated from the light-dependent reactions of photosynthesis. This process occurs in the stroma of the chloroplast and is essential for producing carbohydrates for the plant's growth and metabolism.
Glucose, NADP and ADP
Produces sugar specially G3P .. The light dependant produces ATP and NADPH for light independent reactions to produce sugar from CO2 and RuBP.
Photosynthesis happens in two main stages, called the light-dependent stage and the light-independent stage. The light-independent stage is sometimes called the 'dark' stage. The light-dependent stage can only happen in the light. During this stage light is absorbed and turned into chemical energy (ATP). Oxygen is also produced. The light-independent stage can happen in the light or the dark ie it is independent of light! However, it needs substances made in the light-dependent stage so it cannot happen completely by itself. In the light-independent stage the energy trapped as ATP in the light-dependent stage is used to change carbon dioxide into sugar (glucose). The Calvin cycle converts carbon dioxide to carbohydrate. CO2 --------> (CH2O) This process requires an energy source and a hydrogen source, as well as carbon dioxide. The energy source is ATP. The hydrogen source is NADPH. Both of these substances are produced by the light-dependent reactions. For more details search this site for "calvin cycle", "light dependent" and l"ight independent". See also: http://www.phschool.com/science/biology_place/biocoach/photosynth/calvin1.html
Light-independent reactions
Thylakoids consist of a thylakoid membrane surrounding a thylakoid lumen. Chloroplast thylakoids frequently form stacks of disks referred to as grana (singular: granum). Grana are connected by intergrana or stroma thylakoids, which join granum stacks together as a single functional compartment.
One evidence that burning sugar is a chemical reaction is the production of heat and light during the process. This indicates a change in the chemical composition of the sugar molecules as they react with oxygen in the air, releasing energy in the form of heat and light. Additionally, the formation of new substances such as carbon dioxide and water from the sugar molecules further supports the occurrence of a chemical reaction.
The light DEPENDENT reaction is the first one - and it is, obviously, reliant on sunlight. The energy from the sunlight, along with water are converted into ATP (chemical energy) and electron carriers (NADPH). Basically, you haven't really formed any sugar in the light dependent reaction yet...you're just setting it up for the light independent reaction. (By the way, this reaction happens in the grana of the chloroplast.)The light INDEPENDENT reaction takes the energy and electron carriers from the previous reaction and uses them to turn carbon dioxide into glucose. This reaction doesn't need light...but it will cease if it uses up all the chemical energy. This reaction happens in th stroma of the chloroplast.Source(s):AP Bio student
The light dependent reactions take in the light energy and convert that to chemical energy, but it is in the Calvin cycle (light independent reactions) where the chemical energy is stored in a complex sugar.