How Do Light Dependent Reactions Differ From The Calvin Cycle

Last Updated on July 22, 2022 by amin

Contents

In what way are light dependent and light-independent reactions of photosynthesis similar?

The light-dependent reactions of photosynthesis use water and produce oxygen. … The light-independent reactions release energy and the light-dependent reactions require energy. The light-dependent reactions pass electrons through an electron transport chain to the light-independent reactions.

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.

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.

Why does light reactions precede dark reaction during photosynthesis?

Light provides energy for the synthesis of glucose from carbon dioxide and water during photosynthesis. … Thus light reaction must precede dark reaction. During light reaction the chlorophyll entraps light and the solar energy is converted into chemical energy in the form of ATP molecules.

Why does the light-independent reaction occur?

The light-independent reactions or dark reactions of photosynthesis are chemical reactions that convert carbon dioxide and other compounds into glucose. … This process occurs only when light is available. Plants do not carry out the Calvin cycle during nighttime.

Which is light independent reaction?

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.

What reactions make up the Calvin cycle?

The Calvin cycle has four main steps: carbon fixation reduction phase carbohydrate formation and regeneration phase. Energy to fuel chemical reactions in this sugar-generating process is provided by ATP and NADPH chemical compounds which contain the energy plants have captured from sunlight.

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. See also how can mechanical weathering speed up chemical weathering

The Calvin Cycle

How are light and dark reactions related?

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 …

Where do the light-dependent reaction and the Calvin cycle occurs in the chloroplast?

Light-dependent reaction takes place in the presence of light energy in thylakoid membranes (grana) of the chloroplast Calvin cycle occurs at the stroma of the chloroplast.

How does the Calvin cycle differ from the light-dependent reactions A It takes place in the stroma B it takes place in chloroplasts C it requires light D it requires water?

The light-dependent reactions take place in the thylakoid membrane and the Calvin cycle takes place in the stroma. The Calvin cycle converts water molecules into oxygen gas as a byproduct of its reactions. During the light-dependent reactions carbon dioxide is fixed to produce sugars that form glucose.

Which of the following best describes how the Calvin cycle and the light reactions of photosynthesis function together choose 1 answer?

Which of the following best describes how the Calvin cycle and the light reactions of photosynthesis function together? The Calvin cycle uses ATP and NADPH generated by the light reactions to synthesize carbohydrates. The light reactions of photosynthesis produce ATP and NADPH.

Which outcome is the main function of 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.

How Do Light Dependent Reactions Differ From The Calvin Cycle?

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.

Can Calvin cycle occur without light?

The Calvin cycle is a dark reaction because it does not need sunlight. Although it can happen during the day this process does not require energy from the sun to work. Other names for the Calvin cycle include the Calvin-Benson cycle light-independent reaction carbon fixation and C3 pathway.

What is the difference between light-dependent?

During light-dependent photosynthesis photolysis or splitting of molecules of water take place into hydrogen and oxygen. During light-independent photosynthesis reduction of carbon dioxide into glucose molecules take place through a series of reactions constituting the Calvin cycle.

What products of the light-dependent reactions are used in the light-independent reactions?

Figure 8.6. 1: The light-dependent reactions of photosynthesis (left) convert light energy into chemical energy forming ATP and NADPH. These products are used by the light-independent reactions to fix CO2 producing organic carbon molecules.

Light-dependent reactions & Calvin cycle AP Biology

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.

How do the light reactions and Calvin cycle work together?

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.

Where does Calvin cycle or dark reaction occur?

The Calvin cycle is also called the dark reactions or light-independent reactions because it is the part that doesn’t need energy from the sun to happen. The Calvin cycle takes place within the stroma of the chloroplast.

Which of the following does not occur in the light-dependent reactions?

Of the following carbon fixation does not occur during the light-dependent reactions of photosynthesis.

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.

What is a product of the Calvin cycle or the light reaction?

Summary. 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 are the different stage of light-dependent reactions of photosynthesis?

Figure: 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. See also how do natural disasters contribute to genetic drift?

What does light do in 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.

Do the light reactions of photosynthesis depend on the Calvin cycle?

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.

Why are the reactions of the Calvin cycle also called the light-independent reactions?

Overview of the Calvin cycle These reactions are also called the light-independent reactions because they are not directly driven by light. … Unlike the light reactions which take place in the thylakoid membrane the reactions of the Calvin cycle take place in the stroma (the inner space of chloroplasts).

Photosynthesis: Light Reactions and the Calvin Cycle

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.

How do light-dependent and light independent reactions differ?

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.

Why does Calvin cycle need products of light?

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.

Photosynthesis – Light Dependent Reactions and the Calvin Cycle

What are the two main products of the light reactions that are used in the Calvin cycle?

What two products of the light reactions are used up in the calvin cycle? NADPH which is an electron carrier and can be reused and ATP or ADP which is an energy molecule that can be rebuilt in another light reaction. See also how do plants produce atp

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.

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 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.