The light-dependent reactions convert light energy into chemical energy, producing ATP and NADPH. The light-independent reactions use the ATP and NADPH from the light-dependent reactions to reduce carbon dioxide and convert the energy to the chemical bond energy in carbohydrates such as glucose.
Regarding this, what are the products of the light independent reactions of photosynthesis?
In photosynthesis, chlorophyll, water, and carbon dioxide are reactants. GA3P and oxygen are products. In photosynthesis, water, carbon dioxide, ATP, and NADPH are reactants. RuBP and oxygen are products.
Secondly, what is light independent photosynthesis? light-independent reaction: chemical reactions during photosynthesis that convert carbon dioxide and other compounds into glucose, taking place in the stroma.
Similarly, you may ask, what is the difference between the light dependent and light independent reactions of photosynthesis?
In the light-dependent reactions, energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy. In the light-independent reactions, the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon dioxide.
What are the steps in the light independent reaction?
Light reactions harness energy from the sun to produce chemical bonds, ATP, and NADPH. These energy-carrying molecules are made in the stroma where carbon fixation takes place. The light-independent reactions of the Calvin cycle can be organized into three basic stages: fixation, reduction, and regeneration.
17 Related Question Answers Found
Is oxygen a product of light dependent reactions?
Explanation: Oxygen is in fact a by product of light dependent reactions of photosynthesis. Thus an enzyme extracts electron from water, splitting the water molecule into two hydrogen ions and one oxygen atom. The oxygen atom abrubptly combine with another oxygen atom to form O2 .
What is the purpose of light dependent reactions?
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 are the reactants in light dependent reactions?
Light-Dependent Reactions The reactants in the light-dependent chemical reaction are adenosine diphosphate (ADP), oxydized nicotinamide adenine dinucleotide phosphate (NADP+) and the hydrogen in water.
What is produced by light dependent reactions?
The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.
How is ATP produced in light reactions?
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.
Why is the process of Chemiosmosis also called light dependent reactions?
The flow of hydrogen ions through ATP synthase is called chemiosmosis, because the ions move from an area of high to low concentration through a semi-permeable structure.
Is glucose produced in light dependent reactions?
If referring to plant biochemistry (plant metabolism/physiology more specifically) the light dependant reactions are the first stage of photosynthesis and do not directly form glucose. During photosynthesis, the trapping of light energy is linked to the generation of ATP and other reducing equivalents (NADPH).
What is one role of ATP in the light independent reaction of photosynthesis?
What is one role of ATP in the light-independent reaction of photosynthesis? ATP supplies the energy to produce glucose and other carbohydrates. ATP is produced when water molecules are split and chlorophyll electrons are excited. ATP supplies the energy to split water molecules.
Where do light independent and light dependent reactions 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 are the similarities between light dependent reactions and light independent reactions?
Uses CO2 and the ATP and NADPH from light dependent reactions to produce sugar/ glucose. ATP is used to provide the energy for sugar synthesis and NADPH is used for electrons in the reduction of Carbon Dioxide into sugar. Where does Light Independent Reactions occur? The area in the Chloroplast called the Stroma.
What happens in a light dependent reaction?
In the light-dependent reactions, which take place at the thylakoid membrane, chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the use of water. The lower energy form, NADP+, picks up a high energy electron and a proton and is converted to NADPH.
What are the three parts of the light dependent reactions?
4 Cards in this Set What are the three parts of the light-dependent reactions? Photosystem 2, Photosystem 1, and ATP Synthase What are the functions of photosynthesis 1? to absorb and transfer energy when it goes into the electron transport chain. also to break down water as it goes across the thylakoid membrane.
What happens in the two stages of photosynthesis?
The two stages of photosynthesis: Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions). Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.
What is a stack of thylakoids called?
A granum (plural grana) is a stack of thylakoid discs. Chloroplasts can have from 10 to 100 grana. Grana are connected by stroma thylakoids, also called intergranal thylakoids or lamellae.
What does light dependent reactions mean in biology?
Light-dependent reaction. From Biology-Online Dictionary | Biology-Online Dictionary. Definition. The series of biochemical reactions in photosynthesis that require light energy that is captured by light-absorbing pigments (such as chlorophyll) to be converted into chemical energy in the form of ATP and NADPH.
What are the 3 stages of photosynthesis?
It is convenient to divide the photosynthetic process in plants into four stages, each occurring in a defined area of the chloroplast: (1) absorption of light, (2) electron transport leading to the reduction of NADP+ to NADPH, (3) generation of ATP, and (4) conversion of CO2 into carbohydrates (carbon fixation).
How many steps are in photosynthesis?
two stages