How many reactions are there in photosynthesis?

Answer 1

1. First the chlorophyll (the chemical that makes plants leaves green and traps sunlight) traps the sunlight in the leaves. (The sunlight provides energy for the plants.)

2. Next the sunlight gives the plant energy to start the food-making process.

3. Then the roots suck nutrients up to the leaves and then the leaves mix carbon dioxide, the nutrients and water to make their food. (sugar)

4. Finally they throw out their waste (oxygen).

Carbon dioxide and water are two of the three products needed for photosynthesis. After the plant obtains water from the soil,the water molecules go into the root cells, and through the vascular tissue and through the stem, and to the leaves. The carbon dioxide is obtained from the air. Air passes through the stomata and into the air spaces of the kinda spongy mesophyll cells. The plant then uses the energy from the sun to split the water into hydrogen and oxygen; the oxygen is then released into the air, while the hydrogen is used to make a special compounds called ATP and NADPH. Through a subsequent series of steps (that just happen to not require light), hydrogen atoms from NADPH are combined with carbon dioxide from the air to produce glucose a simple sugar. The energy required to synthesize glucose is supplied by breaking down the ATP that was produced earlier.
1. Sunlight is absorbed by the chorophll which is a chemical in the choroplasts.

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 oxgyen is then given away as a gas and the hydrogen becomes part of the glucose that the plant produces!

Answer 2

Photosynthesis

1. light- dependent reaction

2. whater and energy from the sun

3. chlorophyll

ATP (adenosine triphosphate)

4. carbon fixation reation

5. carbohydrates

balance chemical equation for photosynthesis

6CO2 + 6H2O + light energy >>> C6H12O6 + 6O2

chlorophyll

Answer 3

There are three phases in the Calvin cycle: carbon fixation, reduction and regeneration.

During carbon fixation, CO2 molecules are incorporated into the cycle through their binding to ribulose biphosphate.

During reduction, 1,3-biphosphoglycerate is reduced by NADPH (and also loses a phosphate group) thus becoming glyceraldehyde-3-phosphate. In this step, the products of photosynthesis (sugars) are produced.

In the last step, regeneration, ribulose biphosphate is reformed so it can once again receive CO2 molecules and the cycle runs again.

Answer 4

Photosynthesis occurs in two stages. These stages are called the light reactions and the dark reactions. The light reactions take place in the presence of light. The dark reactions do not require direct light, however dark reactions in most plants occur during the day.

Answer 5

Sunlight strikes the leaf. Chlorophyll captures light energy. Plants use energy in sunlight to make food.

Answer 6

There are two major steps.They are light reaction and dark reaction

Answer 7

3

Answer 8

hey babe

Answer 9

6