How Are The Light-Dependent And Light-Independent Reactions Of Photosynthesis Related?

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How Are The Light-dependent And Light-independent Reactions Of Photosynthesis Related??

The light-dependent reactions convert light energy into chemical energy. The goal of the light-dependent reactions of photosynthesis is to collect energy from the sun and break down water molecules to produce ATP and NADPH. These two energy-storing molecules are then used in the light-independent reactions.

How are the light-dependent and light-independent reactions related?

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.

How are the light-dependent and light-independent reactions of photosynthesis related chegg?

The products of light-dependent reactions are used in the light-independent reactions The products of light-independent reactions must be present for light-dependent reactions to take place. They are not related They cannot occur in the absence of light.

How are the light-dependent and light independent the Calvin cycle reactions of photosynthesis related quizlet?

How do the light-dependent reactions of photosynthesis relate to the Calvin cycle? The Calvin cycle is light independent. The Calvin cycle uses ATP and NADPH produced from light-dependent reactions to produce high-energy sugars.

What happens in light-dependent reactions of photosynthesis?

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.

Where does the light dependent reaction of photosynthesis occur?

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.

How are the light-dependent reactions and the Calvin cycle related quizlet?

The light-dependent reactions transform the energy in sunlight to chemical energy in the form of electrons with high potential energy. These electrons are used to produce ATP and the electron carrier NADPH. Then the reactions of the Calvin cycle use the ATP and NADPH to reduce: carbon dioxide to carbohydrate.

Why is the light reaction and Calvin cycle dependent on each other?

The Calvin cycle refers to the light-independent reactions in photosynthesis that take place in three key steps. Although the Calvin Cycle is not directly dependent on light it is indirectly dependent on light since the necessary energy carriers ( ATP and NADPH) are products of light-dependent reactions.

Which is required for the light-independent reactions in photosynthesis to occur quizlet?

The L-D reactions require light energy and water and the L-IND reactions require ATP NADPH and CO2. … In the chemical equation for photosynthesis carbon dioxide and water are converted to glucose and oxygen.

What does light-independent reactions produce?

Light-independent reaction is a series of biochemical reactions in photosynthesis not requiring light to proceed and ultimately produce organic molecules from carbon dioxide. The energy released from ATP (produced during the light reactions) drives this metabolic pathway.

Which is formed during the Light independent phase of photosynthesis?

What is formed during the light-independent phase of photosynthesis? Glucose molecule.

What are the light reactions in 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.

Why should the light dependent reaction occur before the light independent reaction?

In light – dependent photosynthesis the photosynthetic pigment absorbs the light energy and convert it into chemical energy ATP and NADPH₂ . … So the light-dependent reaction should occur before the light-independent reaction.

Where do the light-dependent reactions of photosynthesis occur quizlet?

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 does the Calvin cycle produce for light reactions?

The Calvin cycle is the term used for the reactions of photosynthesis that use the energy stored by the light-dependent reactions to form glucose and other carbohydrate molecules.

Which of the following statements best represents the relationship between light reactions and the Calvin cycle?

Which of the following statements best represents the relationships between the light reactions and the Calvin cycle? The light reactions provide ATP and NADPH to the Calvin cycle and the cycle returns ADP Pi and NADP⁺ to the light reactions.

How is energy transferred from the light reactions to the Calvin cycle?

In the light-dependent reactions energy absorbed by sunlight is stored by two types of energy-carrier molecules: ATP and NADPH. … When these molecules release energy into the Calvin cycle they each lose atoms to become the lower-energy molecules ADP and NADP⁺.

How do the processes of light dependent and light-independent reactions help the cell conserve energy and matter?

These molecules are then used to produce the carbohydrate molecules when light is not available. This alternation helps in the conservation of the energy as the plant can consume sufficient light energy and then produce the carbohydrate molecule when this energy cannot be harvested from the environment.

What is required for the light-dependent reactions in photosynthesis to occur?

Just as the name implies light-dependent reactions require sunlight. … Light-dependent reactions which take place in the thylakoid membrane use light energy to make ATP and NADPH. The Calvin cycle which takes place in the stroma uses energy derived from these compounds to make GA3P from CO2.

What two reactants do light-independent reactions need?

This dependency comes from the required reactants ATP and NADPH which are quickly used up by the Calvin cycle reactions.

What is formed during the light independent phase of photosynthesis quizlet?

The light-independent reactions of photosynthesis are also known as the: Calvin cycle. … In the overall equation for photosynthesis six molecules of carbon dioxide and six molecules of water results in a molecule of sugar and six molecules of: Oxygen.

How are the light reactions related to the dark reactions in photosynthesis?

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 are the light and dark reactions of photosynthesis?

Difference between Light and Dark Reaction

Light Reaction	Dark Reaction
The end products are ATP and NADPH.	Glucose is the end product. ATP and NADPH help in the formation of glucose.
The water molecules split into hydrogen and oxygen.	Glucose is produced. Co2 is utilized in the dark reaction.

What are the inputs of the light-dependent reactions?

2. Inputs to the light reactions are water and the light energy. 3. The light reactions produce ATP NADPH and Oxygen.

Can the light-independent reaction happen without the light-dependent reaction?

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 steps in the light-independent reaction?

The light-independent reactions of the Calvin cycle can be organized into three basic stages: fixation reduction and regeneration.

Can light-independent reactions occur in the dark?

There are three phases to the light-independent reactions collectively called the Calvin cycle: carboxylation reduction reactions and ribulose 1 5-bisphosphate (RuBP) regeneration. Though it is called the “dark reaction” the Calvin cycle does not actually occur in the dark or during night time.

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What are light-independent reactions quizlet?

The light-independent reaction: The second and final stage of photosynthesis. It uses the products of the light-dependent reaction (ATP and reduced NADP) to make organic substances for the plant. The Calvin Cycle. AKA the Light-Independent Reaction.

Is the Calvin cycle light dependent?

The Calvin cycle refers to the light-independent reactions in photosynthesis that take place in three key steps. Although the Calvin Cycle is not directly dependent on light it is indirectly dependent on light since the necessary energy carriers (ATP and NADPH) are products of light-dependent reactions.

How does the Calvin cycle work in photosynthesis?

The Calvin cycle is a part of photosynthesis the process plants and other autotrophs use to create nutrients from sunlight and carbon dioxide. The Calvin cycle is a process that plants and algae use to turn carbon dioxide from the air into sugar the food autotrophs need to grow. …

Which of the following best describes one of the relationships between light and the chemical reactions that occur in photosynthesis?

Which of the following best describes one of the relationships between light and the chemical reactions that occur in photosynthesis? A chlorophyll molecule absorbs photons of light which excites electrons. … The process of cellular respiration releases energy the process of photosynthesis stores energy.

What is the importance of the light-independent reactions in terms of carbon flow in the biosphere?

What is the importance of the light-independent reactions in terms of carbon flow in the biosphere? The light-independent reactions turn glucose a sugar into CO2 gas. The light-independent reactions turn CO2 a gas into usable carbon in the form of sugars.

Which of the following correctly describes the relationship between the light and dark also called Calvin cycle reactions during photosynthesis?

The Calvin cycle requires products only produced when the photosystems are illuminated. Which of the following statements correctly describes the relationship between the light reactions and the Calvin cycle? … The light reactions produce carbon dioxide ATP and NADPH all of which are used in the Calvin cycle.

How does the light energy captured in the light-dependent reactions help in the synthesis of glucose and other carbohydrates in the Calvin cycle?

The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. … To replace the electron in the chlorophyll a molecule of water is split.