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Cells PowerPoint
By Chet Krajewski
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The Cell Theory
The Cell Theory has 3 parts:
All Living Organisms are Composed of Cells
Cells are the Basic Units of Life
Cells Come from other Cells
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Cell Shape and Cell Function
Cells are longer and tighter to form a solid or
stronger tissue. Cells are strung out and loose to
form structures like blood.
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Factors That Limit Cell Size
Cell surface area determines how well the cell will
function. If cells get to big in areas where there is
no room for large cells, the cells will move slower
and won’t do their job as well.
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Prokaryote and Eukaryote Cells
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Prokaryotic Cells
S Prokaryotic Cells are cells without a nucleus. DNA is in the
cytoplasm instead of the Nucleus. These cells are found in
single-celled organisms, usually bacteria. Prokaryotic
Organisms or called prokaryotes. Prokaryotes were the first
organisms to evolve and are still the most common
organisms today.
Eukaryotic Cells
S Eukaryotic Cells have a nucleus. DNA is in the nucleus in
Eukaryotic Cells. Multi-cellular organisms have Eukaryotic
Cells in them. Organisms with these cells are called
Eukaryotes. Eukaryotic Cells contain organelles. Organelles
are structures within a cytoplasm that performs a specific
job. For example the mitochondria provides energy to the
cell.
Levels of Cell Organization
1. Cells
2. Tissues
3. Organ
4. Organ System
5. Organism
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Cell Organization
S Cells are the basic structure for organisms. They can do
specific functions. Tissues are made up of similar cells that
work together. Organs are made up of tissues. Organs
perform specific activities. Organ Systems are two or more
tissues that work together to perform a function. Organisms
are all of the cells working together to allow for a living life.
Citations
S CK 12 Biology Lesson 3.1: Critical Reading.
S http://utahscience.oremjr.alpine.k12.ut.us/sciber00/7th/cel
ls/sciber/levelorg.htm