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INTRODUCTION TO THE CELL

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Presentation on theme: "INTRODUCTION TO THE CELL"— Presentation transcript:

1 INTRODUCTION TO THE CELL
pp

2 LEVELS OF ORGANIZATION

3 HISTORY Hooke: observed cork

4 Leeuwenhoek: first to observe living cells

5 CELL THEORY All living things composed of cells.
Cells are basic units of structure and function. Cells come from pre-existing cells

6 BASIC PARTS OF A CELL Cell membrane Genetic material (DNA)
Ribosomes: make proteins Cytoplasm: surrounds the cell’s organelles

7 Cell Membrane: - Selectively permeable: controls what comes into and out of the cell - Made of phospholipids that form a lipid bilayer

8

9 Cell membrane has proteins
peripheral: attached to the surface integral: embedded in the bilayer

10 Fluid mosaic model: cell membrane behaves more like a fluid than solid

11 Prokaryotic cells - Unicellular organisms - Oldest living type of cell

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