Chapter 6: PhotosynthesisLight-dependent ReactionLight-independent Reaction2. Products are ATP, NADPH, and oxygen; and the reactant is water.2. The products is glucose, and reactants are ATP, NADPH, and CO2.3. This reaction occurs in thylakoid membranes.3. This reaction occurs in stroma.
Similarly, you may ask, what are the products at the end of photosynthesis?
Photosynthesis does not produce glucose. The end product of photosynthesis is G3P, which can then be converted into glucose (for short term energy storage), starch (for long term energy storage), and cellulose (for structure).
What is produced by the light reactions of photosynthesis?
The Light Reactions of Photosynthesis. Light is absorbed and the energy is used to drive electrons from water to generate NADPH and to drive protons across a membrane. These protons return through ATP synthase to make ATP.
Who discovered light reaction of photosynthesis?
By studying purple sulfur bacteria and green bacteria he was the first to demonstrate that photosynthesis is a light-dependent redox reaction, in which hydrogen reduces carbon dioxide. Robert Emerson discovered two light reactions by testing plant productivity using different wavelengths of light.
What are the products of the light reaction of photosynthesis?
During these initial reactions, water is used and oxygen is released. The energy from sunlight is converted into a small amount of ATP and an energy carrier called NADPH. Together with carbon dioxide, these are used to make glucose (sugar) through a process called the Calvin Cycle.
What is produced in the light reaction?
These electrons are used to produce NADPH as well as ATP in a series of reactions called the light reactions because they require light. NADPH and ATP formed by the action of light then reduce carbon dioxide and convert it into 3-phosphoglycerate by a series of reactions called the Calvin cycle or the dark reactions.
What are the products of a light dependent reaction?
The two products of the light-dependent reactions of photosystem are ATP and NADPH. The movement of high energy electrons releases the free energy that is needed to produce these molecules. The ATP and NADPH are used in the light-independent reactions to make sugar.
What are the reactants and the products of the Calvin cycle?
The light reactions use the reactant water from the equation and release the product oxygen. The Calvin cycle, which takes place in the stroma, uses ATP and NADPH to convert carbon dioxide to sugar (Figure 8-14).
What are the products of the photosynthesis?
They use it to react carbon dioxide with water to make a sugar called glucose. The glucose is used in respiration, or converted into starch and stored. Oxygen is produced as a by-product. This process is called photosynthesis.
What is the main product of the light independent reaction?
In this process sugars are made from carbon dioxide. The process, known as the Calvin cycle, uses products of the light-dependent reactions (ATP and NADPH) and various enzymes. Therefore, the light-independent reaction cannot happen without the light-dependent reaction.
What are the two products of photosynthesis?
In this equation, carbon dioxide, water and sunlight are the reactants which are present at the start of the reaction, while glucose and oxygen are the products of this process. As you can see in the photosynthesis equation given above, the two main products of this process are glucose and oxygen.
What are some sources of co2?
There are both natural and human sources of carbon dioxide emissions. Natural sources include decomposition, ocean release and respiration. Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal, oil and natural gas.
What are the steps that occur in a light reaction?
The light reactions can be split into the following specific steps:
Light absorption & splitting of water.
Production of ATP.
Movement of electrons through electron acceptors to power a hydrogen pump.
Re-energizing electrons so they can produce NADPH. [Dark Reactions] Slichter.
What is produced in the second stage of photosynthesis?
Thus, light energy is initially converted to chemical energy in the form of two compounds: NADPH, a source of energized electrons ( “reducing power”); and ATP, the versatile energy currency o that the light reactions produce no sugar; that happens in the second stage of photosynthesis, the Calvin cycle.
What is another name for the light independent reaction?
The light-independent reactions, or dark reactions, of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose. These reactions occur in the stroma, the fluid-filled area of a chloroplast outside the thylakoid membranes.
Where does the light reaction occur?
In photosynthesis, the light-dependent reactions take place on the thylakoid membranes. The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place.
What harnesses the energy of the electrons in Photophosphorylation?
Absorption of light excites an electron from the reaction-center chlorophyll of PSI to a higher energy level. The ATP synthase, which harnesses the energy to produce ATP from ADP and inorganic phosphate. This mechanism of ATP synthesis is called photophosphorylation because it is driven by light.
What are the reactants and products of photosynthesis?
A chemical equation is written below which summarizes the reactants and products of the photosynthesis pathway. The equation shows that carbon dioxide and water are used with light energy to produce glucose sugar and oxygen gas.
What is produced in the light dependent reactions of photosynthesis?
The overall function of light-dependent reactions, the first stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP, which are used in light-independent reactions and fuel the assembly of sugar molecules.
What is the final product of the Calvin cycle?
The reactions of the Calvin cycle add carbon (from carbon dioxide in the atmosphere) to a simple five-carbon molecule called RuBP. These reactions use chemical energy from NADPH and ATP that were produced in the light reactions. The final product of the Calvin cycle is glucose.
What waste product of photosynthesis is formed in the light reactions?
What happens to water molecules in the light reactions? It’s broken apart and the electrons go to photosystem II. What photosynthesis waste product is formed in the light reactions? Oxygen is the waste product in light reactions.
What happens in the dark reaction of photosynthesis?
Dark reactions make use of these organic energy molecules (ATP and NADPH). This reaction cycle is also called Calvin Benison Cycle, and it occurs in the stroma. ATP provides the energy while NADPH provides the electrons required to fix the CO2 (carbon dioxide) into carbohydrates.
What are the factors that affect the rate of photosynthesis?
Three factors can limit the speed of photosynthesis: light intensity, carbon dioxide concentration and temperature.
Light intensity. Without enough light, a plant cannot photosynthesise very quickly, even if there is plenty of water and carbon dioxide.
Carbon dioxide concentration.
Temperature.
Originally posted 2022-03-31 02:09:08.