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Introduction to the Cell

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by

Chris Maltby

on 5 November 2013

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Transcript of Introduction to the Cell

The Discovery of the Cell
Two Cell Types
Cell Theory
Introduction to the Cell
Cell Diversity
(cc) photo by Metro Centric on Flickr
(cc) photo by Franco Folini on Flickr
(cc) photo by jimmyharris on Flickr
(cc) photo by Metro Centric on Flickr
Robert Hooke (1635 - 1703)
Peeped at cork under a microscope.
Saw "a great many little boxes."
Looked like a monk's room -- called them "cells."
The smallest unit of matter that can carry out ALL life processes.
The first to observe living cells.
Anton van Leuwenhoek (1632-1723)
Hooke and van Leuwenhoek's work led to this.
All living things made of 1 or more cells.
Cells - basic unit of life:
Structure
Function
New Cells:
only come from the reproduction of existing cells.
Cell Size
Structure determines function and function determines structure
0.000008 inch diameter to over six feet long.
Giraffe nerve cell.
Bacteria.
Cell size is limited by surface area/volume ratio.
Shape
Structure follows function
Nerve cell, skin cell, red blood cell?
Internal Organization
Organelles - a cell structure that performs a specific cell function.
Cell Membrane - the membrane that surrounds cells and organelles.
Nucleus - organelle - the command center & home to genetic info.
The End
Prokaryotes
Eukaryotes
Organisms whose cells have membrane-bound orgenelles and a bound nucleus.
From two different kingdoms!
Organisms whose cells lack a defined nucleus and membrane bound organelles.
Full transcript