Equation for photosnthesis 6CO2 + 6H2O > C6H12O6 + 6O2.
Light energy is absorbed by chlorophyll in green plants it isint used in the process, and it isint a reaction.
Within the chlorophyll molecule the light energy is used to rearrange the atoms ofCO2and H2O to make glucose (A sugar)
Oxygen is made as a waste product it leaves the plant via leafs it can be reused by the plant during respiration.
Glucose can be converted into chemicals needed for plant growth for example. Carbohydrates-cellulose and starch, proteins and chlorophyll.
Glucose is soluble chemical can be stored in plant as an insoluble long-chained molecule called starch. Long chained molecules that are made up of many copies of the same unit are called polymers.
Cellulose is need to build call walls similar structure to statch but the long chains are cross-linked to form a mesh.
Glucose with nitrates absorbed by the soil can be converted into amino acids. Amino acids can be linked together in different combinations to form proteins which is an example of a polymer.
Cells contain H2O. If glucose dissolves in the cell water, it changes the osmotic balanceof the cell to favour net water movement out of the cell.
If a plant does not contain any dissolved glucose water moves in and out at the same rate so it is osmotically balanced.
If a plant cell does not contain any dissolved glucose, the less-concentrated water outside the cell will flow into the cell by osmosis. This causes the cell to swell (become turgid) The cell is not osmotically balanced.
Starch is an insoluble chemical so it does not alter the osmotic balance within a cell. This makes starch a better storage molecule than glucose. The starch is stored in the cells in the form of starch grains.
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