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Sunlight is absorbed during the light reactions of photosynthesis primarily in the chlorophyll molecules located in the thylakoid membranes of chloroplasts. This absorption occurs in two main photosystems: Photosystem II (PSII) and Photosystem I (PSI). In PSII, light energy excites electrons, which initiates a series of reactions that ultimately lead to the splitting of water molecules and the release of oxygen. In PSI, absorbed light further energizes electrons to help produce NADPH, a crucial energy carrier in the process.

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What are the main steps of photosinthsis?

The main steps of photosynthesis are light reactions and Calvin cycle. In the light reactions, light energy is absorbed by chlorophyll and converted into chemical energy (ATP and NADPH). In the Calvin cycle, carbon dioxide is fixed and converted into glucose using the ATP and NADPH produced in the light reactions.


How does photosynthesis start and what are the initial steps involved in the process?

Photosynthesis begins when sunlight is absorbed by chlorophyll in plant cells. The initial steps involve capturing light energy and converting it into chemical energy in the form of ATP and NADPH. This process is known as the light-dependent reactions, which take place in the thylakoid membranes of chloroplasts.


What are two phrases in photosynthesis?

There are two steps. Light dependent and light independant reactions


Photosynthesis occurs in two steps which are?

Photosynthesis occurs in two main steps: light-dependent reactions and light-independent reactions (Calvin cycle). In the light-dependent reactions, light energy is used to split water and produce ATP and NADPH. In the light-independent reactions, ATP and NADPH are used to convert carbon dioxide into glucose.


What are the steps that the sunlight goes though when it enters the atmosphere?

Sunlight gets absorbed, scattered, reflected, and transmitted through the atmosphere. Almost all of the ultraviolet component gets absorbed by ozone in the stratosphere. About half of the radiation gets absorbed or scattered and reflected in the troposphere. The remainder passes through, getting absorbed by the earth's surface.


What are the two steps in photosynthisis?

The two steps in photosynthesis are the light-dependent reactions, which occur in the thylakoid membranes and require light to produce ATP and NADPH, and the light-independent reactions (Calvin cycle) that occur in the stroma and use ATP and NADPH to convert CO2 into sugar.


List the steps in the process of potosynthesis?

Photosynthesis occurs in two main stages: the light-dependent reactions and the light-independent reactions (Calvin cycle). In the light-dependent reactions, chlorophyll absorbs sunlight, converting it into chemical energy in the form of ATP and NADPH while splitting water molecules to release oxygen. During the Calvin cycle, this energy is used to convert carbon dioxide from the atmosphere into glucose through a series of enzymatic reactions. Overall, photosynthesis transforms light energy into chemical energy stored in organic compounds.


Do all reactions of photosynthesis occur in the chlorophyll?

Yes it has to have sunlight, or imatated sunlight as the light causes the water to split, which is needed by the plant to make food ( c6h12o6) its a long process but yes it needs light. Hence the name PHOTOsynthesis


What are the Light reactions steps?

As light is absorbed the electrons pass through the pigments. The energy passes through the PEA molecules in the thykaloid membrane. The energy moves through the electron transport chain. The energy has been replenished. Water splitting occurs in the Calvin Cycle. All of the energies are paired with a H plus ion.


What is light independent reaction?

The light-independent reactions, also known as the Calvin cycle, occur in the stroma of chloroplasts and involve the conversion of carbon dioxide into glucose through a series of enzyme-controlled steps. These reactions do not directly require light to occur but rely on the products of the light-dependent reactions, such as ATP and NADPH, for their energy source.


Why are the reactions of the calvin cycle also called the light independent reaction?

Well, darling, they call it the light-independent reaction because unlike photosynthesis where light is needed, the Calvin Cycle doesn't give a damn about the sun. It's all about using that stored up energy from the light-dependent reactions to fix carbon dioxide and make some sugar. So, in a nutshell, it's like saying, "I don't need no stinkin' light to do my job!"


What are the three steps in photosyntheseis?

1. Sunlight is absorbed by the chlorophyll which is a chemical in the chloroplasts. 2. The light energy is then converted to chemical energy. 3. this energy is then used to split water molecules from the soil into hydrogen and oxygen. The oxygen is then given away as a gas and the hydrogen becomes part of the glucose that the plant produces!