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Cell

Cell . By: Jomar B. Pendaliday. Intoroduction. basic unit of  life discovered by  Robert Hooke The word  cell  comes from the  Latin cellula , meaning "a small room“ a typical cell size is 10  µm  and a typical cell mass is 1  nanogram. The cell structure.

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Cell

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  1. Cell By: Jomar B. Pendaliday

  2. Intoroduction basic unit of life discovered by Robert Hooke The word cell comes from the Latincellula, meaning "a small room“ a typical cell size is 10 µm and a typical cell mass is 1 nanogram

  3. The cell structure

  4. Animal Cell Structures and Functions Nucleus - Large Oval body near the centre of the cell. - The control centre for all activity. - Surrounded by a nuclear membrane. Nucleoplasm- is the protoplasm in the nucleus. - contains genetic material ---> CHROMOSOMES (DNA)

  5. Nucleolus - is found in the nucleus. - contains more genetic information (RNA) Cell Membrane - the outer boundary of the cell. - it separates the cell from other cells. - it is porous ---> allows molecules to pass through. Cell Wall ( Plant Cells Only ) - non living structure that surrounds the plant cell. - protects + supports the cell. - made up of a tough fibre called cellulose.

  6. CytoPlasm- cell material outside the nucleus but within the cell membrane. - clear thick fluid. - contains structures called organelles. Vacuoles - are clear fluid sacs that act as storage areas for food, minerals, and waste. - in plant cell the vacuoles are large and mostly filled with water. This gives the plant support. - in animal cells the vacuoles are much smaller.

  7. Mitochondria - power house of the cell. - centre of respiration of the cell. - they release energy for cell functions. ChloroPlasts( Plant cells only ) - contains a green pigment known as chlorophyll which is important for photosynthesis. Ribosomes- tiny spherical bodies that help make proteins. - found in the cytoplasm or attached to the endoplasmic reticulum.

  8. Endo Plasmic Reticulum ( ER ) - systems of membranes throughout the cytoplasm. - it connects the nuclear membrane to the cell membrane. - passageway for material moving though the cell. Golgi Bodies - tube like structures that have tiny sacs at their ends. - they help package protein.

  9. Lysosomes- " suicide sacs " - small structures that contain enzymes which are used in digestion. - if a lysosome were to burst it could destroy the cell.

  10. Cell division

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