What are the stages of the light 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.
Where does light reaction occur in photosynthesis?
The light reactions of photosynthesis take place in the thylakoid membrane, whereas the dark reactions are located in the chloroplast stroma.
Which of the following events occurs in the light reactions of photosynthesis?
The events occurring in the light reaction of the photosynthesis are: Absorption of sunlight by the chlorophyll and release of the electron to the carriers. Photolysis of water to provide the electron to the chlorophyll. The release of molecular oxygen due to the photolysis of water.
What happens in the stages of photosynthesis?
The stages of photosynthesis
| Stage | Location | Events |
|---|---|---|
| Light-dependent reactions | Thylakoid membrane | Light energy is captured by chloroplasts and stored as ATP |
| Calvin cycle | Stroma | ATP is used to create sugars that the plant will use to grow and live |
What is produced by the light reactions?
During the light reactions, water is used and oxygen is produced. These reactions can only occur during daylight as the process needs sunlight to begin.
Which reaction occurs in photosynthesis?
Photosynthesis requires energy, making it an endothermic reaction. Light, generally sunlight, is the source of this energy. The process converts the sun's electromagnetic energy into chemical energy, which is then stored in chemical bonds in the plant.
What three events occur during the light reactions of photosynthesis quizlet?
The correct sequence of events in the light reactions is… absorption of sunlight, splitting of water, electrons flow down the electron transport chain, and ATP is made.
Which of the following events occurs in the light reactions of photosynthesis Quizizz?
The light reactions provide the Calvin cycle with oxygen for carbon fixation, and the Calvin cycle provides the light reactions with sugars to produce ATP.
What occurs during the light-dependent reaction?
Light-dependent reactions happen in the thylakoid membrane of the chloroplasts and occur in the presence of sunlight. The sunlight is converted to chemical energy during these reactions. The chlorophyll in the plants absorb sunlight and transfers to the photosystem which are responsible for photosynthesis.
What happens in the two stages of photosynthesis?
Photosynthesis represents the biological process by which plants convert light energy into sugar to fuel plant cells. Comprised of two stages, one stage converts the light energy into sugar, and then cellular respiration converts the sugar to Adenosine triphosphate, known as ATP, the fuel for all cellular life.
Which is true of the light reaction of photosynthesis?
Correct answer: The light dependent reaction converts solar energy to chemical energy, using the photosystem to capture light energy, and ultimately produce ATP and NADPH. Pigment molecules in the photosystem absorb photons of light, which then reach the chlorophyll, exciting electrons in the chlorophyll.
What occurs during the light dependent reactions?
Light-dependent reactions happen in the thylakoid membrane of the chloroplasts and occur in the presence of sunlight. The sunlight is converted to chemical energy during these reactions. The chlorophyll in the plants absorb sunlight and transfers to the photosystem which are responsible for photosynthesis.
What is the role of light in photosynthesis?
The process of photosynthesis occurs when green plants use the energy of light to convert carbon dioxide (CO2) and water (H2O) into carbohydrates. Light energy is absorbed by chlorophyll, a photosynthetic pigment of the plant, while air containing carbon dioxide and oxygen enters the plant through the leaf stomata.
Which of the following occurs during the light reactions quizlet?
The light reactions produce carbon dioxide, ATP, NADPH, all of which are used in the Calvin cycle. The light reactions produce ATP and NADPH, both of which are used in the Calvin cycle. The light reactions produce ADP and NADP+, both of which are used in the Calvin cycle.
Where does the light reaction in photosynthesis occur quizlet?
The light reactions take place inside the thylakoids of chloroplasts. Pigment molecules inside photosystem II and photosystem I absorb light energy from the sun. The light reactions produce chemical energy in the form of NADPH and ATP.
What is the first process in the light-dependent reactions of photosynthesis?
In the first part of photosynthesis, the light-dependent reaction, pigment molecules absorb energy from sunlight. The most common and abundant pigment is chlorophyll a. A photon strikes photosystem II to initiate photosynthesis.
Which of the following occurs during the carbon reactions of photosynthesis?
Which of the following occurs during the carbon-fixation reactions of photosynthesis? Water is converted into hydrogen and water.
What are the 3 stages of photosynthesis?
The stages of photosynthesis
| Stage | Location | Events |
|---|---|---|
| Light-dependent reactions | Thylakoid membrane | Light energy is captured by chloroplasts and stored as ATP |
| Calvin cycle | Stroma | ATP is used to create sugars that the plant will use to grow and live |
Where does light reaction occurs in chloroplast?
The light reaction takes place in the thylakoid discs. There, water (H20) is oxidized, and oxygen (O2) is released. The electrons freed up from water are transfered to ATP and NADPH. The dark reaction occurs outside of the thylakoids.
How do plants use light in photosynthesis?
During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose.
What are the light reactions of photosynthesis quizlet?
The light reactions produce water, ATP, NADPH, all of which are used in the Calvin cycle. The light reactions produce carbon dioxide and water, all of which are used in the Calvin cycle.
Which of the following occurs during light-dependent reactions?
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 light-dependent reactions release oxygen as a byproduct as water is broken apart.
Which of the following occurs during the light reactions of photosynthesis quizlet?
– The light reactions take place inside the thylakoids of chloroplasts. – The light reactions produce chemical energy in the form of NADPH and ATP.
What occurs in the light-dependent reactions?
Light-dependent reactions happen in the thylakoid membrane of the chloroplasts and occur in the presence of sunlight. The sunlight is converted to chemical energy during these reactions. The chlorophyll in the plants absorb sunlight and transfers to the photosystem which are responsible for photosynthesis.
What are the three steps of the light-dependent reactions of photosynthesis?
These reactions occur within specialised membrane discs within the chloroplast called thylakoids and involve three steps:
- Excitation of photosystems by light energy.
- Production of ATP via an electron transport chain.
- Reduction of NADP+ and the photolysis of water.
What is the overall outcome of the light reactions in photosynthesis?
What is the overall outcome of the light reactions in photosynthesis? The outcome of light reactions in photosynthesis is the conversion of solar energy into chemical energy that the chloroplasts can use to do work (mostly anabolic production of carbohydrates from carbon dioxide).
Which of these reactions occur in photosynthesis?
6. Which one chemical reaction occurs during photosynthesis? explanation – the chemical reaction that occurs during photosynthesis means Carbon dioxide is reduced and water is oxidised .
What occurs during the light dependent reaction?
Light-dependent reactions happen in the thylakoid membrane of the chloroplasts and occur in the presence of sunlight. The sunlight is converted to chemical energy during these reactions. The chlorophyll in the plants absorb sunlight and transfers to the photosystem which are responsible for photosynthesis.
Why does the light reaction of photosynthesis occur?
Light reaction uses light energy to make the energy storage molecule ATP and the reduced electron carrier NADPH. These two molecules are required in the Calvin cycle. It takes place in the thylakoid membranes of grana in chloroplasts with the help of photosystems.
What is the process of photosynthesis step by step?
Process of Photosynthesis Step by Step The sunlight is absorbed by the chlorophyll in the leaves of the plants. Carbon dioxide enters the plant through structures called the stomata, which are usually found on the underside of the leaves. Water is absorbed through the roots of the plant.