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Name ________________ Period ____ Unit 2: Cell and Microscope Notes Cells All living things are composed of _______________. A cell is _____________________________________________________________________ ___________________________________________________________________________. An organism is _______________________________________________________________. Organisms can be _________________________ or ______________________________. _______________________ are made up of only one cell. They usually need to be seen using a microscope. _______________________ are made up of more than one cell. They have groups of cells that work together. Discovery of Cells Cells were discovered in __________ by _____________________. He was looking at _____________________________________________________________________________. ________________________________ saw the first living cells in ____________. He observed pond scum, blood and was the first to see bacteria. Cell Theory Scientists later discovered a lot more about cells using more powerful microscopes. They developed the Cell Theory. The Cell Theory states: ♦ ___________________________________________________________________ ♦ ___________________________________________________________________ ♦ ___________________________________________________________________ ___________ _____& _ developed the cell theory in __________________. Organization of Life Cells Æ _______________ Æ ________________ Æ ________________ Æ Organisms Types of Cells Prokayotic: ♦ ________________________________________________________________ ♦ ________________________________________________________________ ♦ ________________________________________________________________ ♦ ________________________________________________________________ Eukaryotic: ♦ ________________________________________________________________ ♦ ________________________________________________________________ ♦ ________________________________________________________________ ♦ ________________________________________________________________ There are two types of Eukaryotic cells: ____________________ or ___________________. Comparing Plant and Animal Cells Animal Both Plant Diffusion and Osmosis Diffusion: Osmosis: ♦ _______________________________________________________________ ♦ _______________________________________________________________ Microscope Parts and Functions: Eyepiece - _____________________________________________________________________ Arm - ________________________________________________________________________ Body Tube - ___________________________________________________________________ Coarse Adjustment Knob - ________________________________________________________ Fine Adjustment Knob - __________________________________________________________ Nosepiece - ____________________________________________________________________ Objective Lens - ________________________________________________________________ Stage - _______________________________________________________________________ Stage Clips - ___________________________________________________________________ Diaphragm - ___________________________________________________________________ Light Source - __________________________________________________________________ Base - ________________________________________________________________________ Determining Total Magnification _______________ the magnification of the ____________________ by the magnification of the _______________________________________. Example: Object Orientation As you look through the eyepiece the image you see is ____________________________ and _____________________________ from the specimen on the slide. e Slide eyepiece If you move the slide to the left, the object moves to the ______________ in the eyepiece. If you move the slide to the right, the object moves to the ______________ in the eyepiece. Field of View Each mark is 1 mm or ____________ micrometers (μm) 1. Determine the field of view by counting the number of marks. 2. Use the field of view to determine the size of a specimen. a. Count the number of cells in a row. b. Divide the field of view in μm by the number of cells. 1. 2. Field of View: ___________ mm a. Number of cells = ___________ ___________ μm b. Size of 1 cell = ___________ μm