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Chapter 2 Cells & The Microscope.

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Presentation on theme: "Chapter 2 Cells & The Microscope."— Presentation transcript:

1 Chapter 2 Cells & The Microscope

2 Animal cells Cell membrane Nucleus Cytoplasm Holds the cell together
Controls the activities of the cell Cytoplasm Watery substance between the nucleus & cell membrane

3 Plant Cells These have 3 things animal cells don’t have Cell wall
Gives cell a definite shape Chloroplasts Carry out photosynthesis Vacuoles Stores water & food

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5 How organisms are organised

6 Cell: The basic unit of living things
Can you think of any examples of cells in our bodies? Tissue: A group of cells with the same function

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8 Parts of the microscope & Their Function
1.Eyepiece lens Magnifies the object by 10 2.Objective lens Magnifies the object by 4, 10 or 40 3.Stage Holds the slide in position 4.Diaphragm To control brightness of the light 5.Coarse focus knob To make large adjustments to the focus 6.Fine focus knob To make small adjustments to the focus

9 Microscope Magnification
Eyepiece (x10) Low power objective (x4) X 40 magnification Medium power objective (x10) X 100 magnification High power objective (x40) X 400 magnification

10 Mandatory Experiment 2:
To look at onion skin cells under a microscope

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