The Discovery of Cells 7.1. I. The Cell Theory A.____- The basic unit of living organisms B. The...
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Transcript of The Discovery of Cells 7.1. I. The Cell Theory A.____- The basic unit of living organisms B. The...
The Discovery of The Discovery of CellsCells
The Discovery of The Discovery of CellsCells
7.17.1
I. The Cell Theory
A. ____- The basic unit of living organisms
B. The ______ was developed by several scientists including Hooke, Schleiden andSchwann.
I. The Cell Theory
C. 3 Main Ideas1. All _______ are composed of one or more cells. 2. The cell is the basic unit of structure and _________ of organisms.3. All cells come from _________ cells
II. Role of the Microscope
A. Before microscopes, we didn’t know cells existed1. People thought illness caused by bacteria were brought by _______
II. Role of the Microscope
B. 1st (Simple) Microscope 1. 1600’s 2. Leeuwenhoek 3. Used __ reading lenses and light to view objects
II. Role of the Microscope
C. Compound Microscope 1. 1600’s 2. _______ observed and named “cells”3. Uses ______ lenses and light to magnify objects up to 1500 x4. Lead to the cell theory
II. Role of the Microscope
D. Microscope practice1. Observe cork2. Observe ________ slides
II. Role of the Microscope
E. Electron Microscope1. 1930’s 2. Uses an ________ beam instead of light3. Magnifies up to _______ x
II. Role of the Microscope
4. Types of electron microscopesa. ____- Makes a 3-D image of the cell surfaceb. ____- Magnifies structures inside the cellc. ____- Creates computer images of atoms on a molecule
III. Basic Cell Types
A. _______- Small, specialized structures in a cell1. A.K.A. CELL PARTS2. Surrounded by ________
III. Basic Cell Types
B. Prokaryotes (hint: pro means NO)
1. No membrane bound organelles2. No _______3. No more than one cell (Single-celled organisms)4. No organization
III. Basic Cell Types
C. _____________1. DOES have membrane-bound organelles2. DOES have a nucleus3. Single-celled or multi-celled organisms4. Think of these as being more complex/organized
IV. Recap What are the 3 main ideas
of the cell theory? What is the difference
between a simple, compound and electron microscopes?
What is the difference between a prokaryote and a eukaryote?