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This is the duplicating of cells

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White blood cells fight diseases

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The gas exchange is the way living organisms survive, the gas exchange involves the use and return of gases. By doing this all the living cells in the organism can survive.

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The heart is a complex organ that pumps blood around the body. The left side of the heart deals with oxygenated blood from the lungs, and the right side of the heart deals with de-oxygenated blood.

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They act like catalysts to speed up chemical reactions in the cell. The shape of an emzyme is vital to it’s function. Each enzyme is specific for its substrate molecules.

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Mitochondria store energy within the cell

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Cells are the building blocks of life. Animal and plant cells both have a nucleus.

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Nucleus- contains DNA.
Ribosomes - contains protein for the cell.

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The heart keeps it’s own blood supply

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Cells are basically the building blocks of life. They make up very living thing and are vital for survival. Cells have many parts to them such as: nucleus, ribosomes, mitochondria, cytoplasm, cell wall, cell membrane e.t.c.

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Blood although it may seem a liquid is in fact made up of both solids and liquids. But it seems liquidise due to our eyes not being able to detect the small cell like structures that our blood is made up of

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Arteries - carry blood away from the heart.
Veins - carry blood towards the heart. Veins unlike arteries can carry blood around the body.

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Blood is made up of four different types of substances and cells

Blood plasma

Red blood cells

White blood cells

Platelets