What are the three major light-independent reactions in photosynthesis?

What are the three major light-independent reactions in photosynthesis?

The light-independent reactions (also known as the Calvin cycle) can be organized into three basic stages: fixation, reduction, and regeneration (Video 13.6. 1).

Why are the light-independent reactions called the dark reactions?

The most outdated name is dark reactions, because light is not directly required (Figure 1). 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.

What is an example of light-independent reactions?

Explanation: The light independent reactions are also called the Calvin cycle. This is the process in which carbon dioxide is used to produce glucose.

What is the relationship between the rate of photosynthesis and light intensity?

Increasing the light intensity increases the rate of photosynthesis, until some other factor – a limiting factor – becomes in short supply. At very high light intensities, photosynthesis is slowed and then inhibited, but these light intensities do not occur in nature.

What are light dependent and independent reactions?

The light dependent reactions convert light energy from the Sun into chemical energy (ATP) The light independent reactions use the chemical energy to synthesise organic compounds (e.g. carbohydrates)

What are the end products of light-independent reaction?

3.6), also called the cycle of light-independent reactions of photosynthesis. The chemical reactions are carried out in the stroma that converts carbon dioxide into glyceraldehyde 3-phosphate (G3P), consuming the ATP and NADPH produced during the photophosphorylation process.

What is needed in light-independent reaction?

The light-independent reactions of photosynthesis take place within the stroma. It contains enzymes that work with ATP and NADPH to “fix” carbon from carbon dioxide into molecules that can be used to build glucose.

Can the light independent reaction 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.

What is the difference between light and dark reaction?

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 is needed in light independent reaction?

What are the requirements of light independent reaction?

The requirements or ingredients for light-independent reactions are carbon dioxide and energy in the form of ATP and NADPH.

What are the reactants of light dependent photosynthesis?

The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll, while the products are glucose (sugar), oxygen and water.

What happens during light independent stage of photosynthesis?

Photosynthesis occurs in two stages. In the first stage, light-dependent reactions or light reactions capture the energy of light and use it to make the energy-storage molecules ATP and NADPH . During the second stage, the light-independent reactions use these products to capture and reduce carbon dioxide.

What are some light-independent reactions?

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

What are the steps in light reactions?

There are three phases to the light-independent reactions, collectively called the Calvin cycle : carbon fixation, reduction reactions, and ribulose 1,5-bisphosphate regeneration. Despite its name, this process occurs only when light is available.