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Unit 5 P1

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Unit 5: P1
Main functions of the cell membrane
The cell membrane is the outer cover for a cell, and something that lets things out and into the cell. The function is to protect the interior of the cell by allowing some substances into the cell, and also blocking some substances from coming in.
Main functions of the nucleus
The nucleus is the centre of the cell which controls things. Nuclei contains genetic material e.g. DNA and also controls the cells growth and reproduction. In red blood cells, the nucleus is lost during development and is the only cell that is able to survive without a nucleus. The nucleus contains information that is transferred to the next generation.

Main functions of the cytoplasm
Cytoplasm is the material inside of the cell, generally clear and jelly like that fills the inside of cells. This is where the chemical reactions take place and where the fluid is able to flow slowly. The cytoplasm supports the cell and allows organelles to freely move throughout the cell. Glycogen and melanin are the chemicals that are the basic living materials that a cell needs, they also are responsible for skin and hair colour.

Main functions of the mitochondria
The mitochondria generates the energy to power the cell through respiration.

Mitochondria: [pic]
The mitochondria is the powerhouse of the cell it provides energy to the cell through respiration.The food that we eat is broken into simpler molecules like carbohydrates, fats and etc in our bodies. These are sent to the mitochondrion where they are further precessed to produce charged molecules that combine with oxygen and produce Adenosine TriPhosphate (ATP) molecules. This entire process is known as oxidative phosphorylation.Mitochondria also helps in the building of certain parts of the blood, and hormones like testosterone and estrogen. Smooth and rough endoplasmic reticulum...

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