Discribe the process of photosynthesis

Answer 1

Photosynthesis is a process wherein it produces ATP(adenosine triphosphate) from ADP(adenosine diphosphate) and Pi (Inoraganic Phosphate) by using the energy from light to excite electrons that are passed along an electron transport chain. Coupled with the transfer of electrons is the pumping of hydrogen ions and the splitting of water molecules.

The process is into two phases:

Light dependent phase or photochemical reaction that occurs in the granum and requires the presence of light energy

it involves three major events:

a. Chlorophyll photoactivation is the capture of light energy by chlorophyll that results in the release of energized electrons

b. Photolysis is the splitting of water molecules into hydrogen ions, electrons and oxygen gas in the presence of light activated chlorophyll.

c. Photophosphorylation is the transfer of light energy absorbed by chlorophyll to molecules of ATP, the energy currency of the cell.

The following are produced during the light phase:

1. Oxygen gas..from water and released as a gaseous by-product of photosynthesis.

2. NADPH... a hyrogen ion from water and two electrons from chlorophyll

3. ATP...ADP and Pi combined in the presence of energy harnessed by chlorophyll from the sun.

Light independent phase involves the use of NADPH and ATP for the conversion of carbon dioxide into carbohydrates...please refer to the Calvin Cycle

Photosynthesis ends with the formation of a simple sugar, glucose. Four things may happen to this glucose:

A. It may be converted to sucrose and transported from the leaves to other parts of the plant.

B. It may be converted to starch and stored for future use of the plant.

C. It may be utilized to provide the raw materials from which other organic substances needed by the plant may be synthesized.

D. It may be utilized for cellular respiration.

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GEO KRISTOFF T. MARCOS

Answer 2

the process of photosynthesis is when the plant is starting its cycle and its catchin the sun to make sugars to feed the plant