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Chapter 7.1 Cell Theory, Types of Cells and Microscopes

View this prezi and then fill in your class notes for section 7.1 before coming into class.
by

John MacDonald

on 16 November 2015

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Transcript of Chapter 7.1 Cell Theory, Types of Cells and Microscopes

Hello everyone! I heard you are starting to study the cell in Biology class now. GREAT!!!!!! I can help you. I may be a little goofy but know my stuff!
As you go through the lesson make sure you take the time to look over all material.
so you wont get lost make sure you can hit these four targets
1. I can summarize the 3 principles of the cell theory
2. I can differentiate the structure and function between prokaryotic and eukaryotic cells.
2010
1665
1673
1839
1845
1850
Robert Hooke
The first person to see cells, he was looking at cork and noted that he saw "a great many boxes.” (1665) Coined the
word “Cell”
Observed living cells in pond water, milk and other substances which he called "animalcules" (1673)
Father of the Microscope. I
nspired by Hookes work
Anton van Leeuwenhoek
zoologist
who observed that the tissues of animals had cells (1839)
. Helped come up with part of the cell theory
"
Theodore Schwann
Matthias Schleiden
botanist,
observed that the tissues of plants contained cells ( 1845
).
"Helped come up with part of the cell theory"
also reported that every living thing is made of up vital units, known as cells. He also predicted that cells come from other cells. (1850 )
Rudolf Virchow
Topic 1: History of the Cell Theory
Lead to
The Cell Theory
All organisms are composed of one or more cells
The cell is the basic unit of structure and organization of organisms.
All cells come from preexisting cells.
All this work
light Scope
Electron Scopes
Both
Series of lenses
magnifies up to 1000x original size
What the Images look like
only 2D view
3 Types
magnifies upto 500,000 x original size.
High resolution can take 3D images
magnify
Cheaper
Expensive
View image on scope
View image on screen
Scanning electron scope= Sends electrons across an object. Thick parts of object absorb more forming an image.
can only see dead objects, must be very thin, and coated in a metal such as Gold
Transmission electron scope: directs electrons across surface making a 3D image.
Can only see nonliving objects and they must be thin.
Scanning Tunneling Microscope= electrons tunnel through space between object and probe.
Can see living or nonliving objects
Produces a 3D object
onion tip cells through a light microscope
Green Algae under a light scope
Images are 2D
Can be high resolution but relatively low magnication
Objects seen can be living or nonliving
What images look like
High magnification
High Resolution
most 3D
SEM image of Snow
TEM image of a Fly's foot
SEM of a House Dust Mite
Types of cells to see
Eukaryotic Cells
Prokaryotic Cells
Both
have membrane bound organelles
found in multicellular organisms
have a nucleus
found bacteria
No nucleus
no membrane bound organelles
have ribosomes
a form of genetic material
can be found in unicellular life
Discussion ?
Describe the shape of the cork and what you see inside of it.? What do you think the function of cork in the cork oak tree is?
Answer
Polygon shapes, or cube like. There is nothing inside because it is dead. The cork provides a protective insulating layer for the tree. Helps protect from water loss, physical damages, and pathogens
https://bbmedia.rochester.k12.mn.us/MacDonald/60052.swf
Click here for a movie
Click here for a movie
http://glencoe.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::550::400::/sites/dl/free/0078695104/383931/Visualizing_Cells.swf::Visualizing%20Cells
Chapter 7.1 Cell Theory
Designed by Mr. MacDonald
in Conclusion
Microscopes hae been used as a tool for scientific study since the late 1500's
Scientists use different types of microscopes to study cells
The Cell Theory summarize three principles.
There are two broad groups of cells. Eukaryotic and Prokaryotic
Eukaryotic cells have a nucleus and membrane bound organelles

Chapter 7.1 Cell Theory
Designed by Mr. MacDonald 2011
Quick Notes # 1: Cell Structure 101
What all Cells have in Common
Ribosomes: make proteins
Cytoplasm: jelly like, functions to keep cell shape
DNA or RNA: genetic material
Cytoskeleton: the internal skeleton
Cell Membrane: Provides protection around the cell
Full transcript