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carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur - ✔✔Six main
elements of the living matter
90% of the dry weight of the human body
Cell - ✔✔Contains subcellular structures like nucleus, mitochondria,
lysosomes, peroxisomes etc.
Human body contains wide variety of cells that differ in structure and
function.
Universal functional unit of all forms of life.
Water - ✔✔70-75% of the weight of the cell
Organic Compounds - ✔✔25-30% of the cell weight
nucleic acids, proteins, polysaccharides, lipids - ✔✔Organic compounds
Polysaccharides - ✔✔2-5% of the cell weight
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, Inorganic Compounds - ✔✔Accounts the rest of the cell weight
Cations like sodium, potassium, calcium, magnesium, copper, iron.
Anions like chloride, phosphate, bicarbonate, sulfate, iodide, and fluoride.
Carbohydrates - ✔✔Sugar and starches, contains carbon, hydrogen and
oxygen.
Classified according to size as monosaccharides, disaccharides and
polysaccharides.
Source of energy.
Production of other biorganic compounds.
Lipids - ✔✔Large and diverse group of organic compounds.
Most are insoluble in water.
3% of the cell weight
triglycerides, phospholipids, steroids - ✔✔Most abundant lipids in the body
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