This link has been bookmarked by 233 people . It was first bookmarked on 30 Mar 2008, by Ginger Lewman.
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The main concept of cell theory is that cells are the basic structural unit for all organisms. Cells are small compartments that hold the biological equipment necessary to keep an organism alive and successful.
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. A protein is an example of a macromolecule while a mitochondrion is an example of an organelle.
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Plant cells are easier to identify because they have a protective structure called a cell wall made of cellulose.
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25 Mar 17
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01 Mar 17
mmfosheeThis informational website gives a great overview of cell structure and function. It is easy to read and understand and would be a great resource for high school students.
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05 Dec 16
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All living organisms on Earth are divided into cells.
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Living things may be single-celled or they may be very complex such as a human being.
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There are smaller pieces that make up cells such as macromolecules and organelles. A protein is an example of a macromolecule while a mitochondrion is an example of an organelle.
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Cells can also connect to form larger structures. They might group together to form the tissues of the stomach and eventually the entire digestive system.
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In larger organisms, the main purpose of a cell is to organize. Cells hold a variety of pieces and each cell type has a different purpose. By dividing responsibilities among different groups of cells, it is easier for an organism to survive and grow.
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If you were only made of one cell, you would be very limited. You don't find single cells that are as large as a cow. Cells have problems functioning when they get too big.
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There are many types of cells. In biology class, you will usually work with plant-like cells and animal-like cells.
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We say "animal-like" because an animal type of cell could be anything from a tiny microorganism to a nerve cell in your brain.
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lant cells are easier to identify because they have a protective structure called a cell wall made of cellulose. Plants have the wall; animals do not.
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Plants also have organelles such as the green chloroplast or large, water-filled vacuoles. Chloroplasts are the key structure in the process of photosynthesis.
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Cells are unique to each type of organism.
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f you look at very simple organisms, you will discover cells that have no defined nucleus (prokaryotes)
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Humans have hundreds of different cell types. You have red blood cells that are used to carry oxygen (O2) through the body and other cells specific to your heart muscle.
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Even though cells can be very different, they are basically compartments surrounded by some type of membrane.
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29 Nov 16
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o cells. Th
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all compartments
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22 Sep 16
cfincher24Biology4Kids.com! This tutorial introduces cell structure. Other sections include plants, animal systems, invertebrates, vertebrates, and microorganisms.
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21 Jan 16
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12 Nov 15
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30 Oct 15
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In larger organisms, the main purpose of a cell is to organize. Cells hold a variety of pieces and each cell type has a different purpose. By dividing responsibilities among different groups of cells, it is easier for an organism to survive and grow.
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All living organisms on Earth are divided into cells.
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26 Oct 15
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All living organisms on Earth are divided into cells.
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Cells are small compartments that hold the biological equipment necessary to keep an organism alive and successful.
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single-celled or they may be very complex such as a human being.
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There are smaller pieces that make up cells such as macromolecules and organelles.
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A protein is an example of a macromolecule while a mitochondrion is an example of an organelle.
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cells are the basic unit for biology and organisms.
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if you were only one cell you couldn't have a nervous system, no muscles for movement, and using the internet would be out of the question.
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The trillions of cells in your body make your way of life possible.
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plant-like cells and animal-like cells.
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microorganism
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to a nerve cell in your brain.
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Plant cells are easier to identify because they have a protective structure called a cell wall made of cellulose.
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Plants have the wall; animals do not.
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Plants also have organelles such as the green chloroplast or large, water-filled vacuoles.
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look at very simple organisms, you will discover cells that have no defined nucleus (prokaryotes) and other cells that have hundreds of nuclei (multinucleated).
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Cells are unique to each type of organism. If you
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Humans have hundreds of different cell types. You have red blood cells that are used to carry oxygen (O2) through the body and other cells specific to your heart muscle. Even though cells can be very different, they are basically compartments surrounded by some type of membrane.
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08 Oct 15
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22 Sep 15
Christina LopezBiology4Kids.com! This tutorial introduces cell structure. Other sections include plants, animal systems, invertebrates, vertebrates, and microorganisms.
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22 Jul 15
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09 Jul 15
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02 Jun 15
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15 Feb 15
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14 Feb 15
markdepoldBiology4Kids.com! This tutorial introduces cell structure. Other sections include plants, animal systems, invertebrates, vertebrates, and microorganisms.
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25 Oct 14
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All living organisms on Earth are divided into cells.
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cells are the basic structural unit for all organisms
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small compartments that hold the biological equipment necessary to keep an organism alive and successful.
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single-celled
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very complex such as a human being.
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macromolecules and organelles.
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Cells can also connect to form larger structures.
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form the tissues of the stomach
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entire digestive system
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larger organisms, the main purpose of a cell is to organize.
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each cell type has a different purpose
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one cell, you would be very limited.
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don't find single cells that are as large as a cow.
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We say "animal-like" because an animal type of cell could be anything from a tiny microorganism to a nerve cell in your brain.
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Plants have the wall; animals do not.
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Humans have hundreds of different cell types.
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Even though cells can be very different, they are basically compartments surrounded by some type of membrane.
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20 Oct 14
rni1987Biology4Kids.com! This tutorial introduces cell structure. Other sections include plants, animal systems, invertebrates, vertebrates, and microorganisms.
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08 Oct 14
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05 Sep 14
Núria BoyaBiology4Kids.com! This tutorial introduces cell structure. Other sections include plants, animal systems, invertebrates, vertebrates, and microorganisms.
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04 Aug 14
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03 Jul 14
lrichardson63This website is one of many different sites that has fun ways for students to learn different science topics. This page talks about cell functions and structures.
curriculum fifth grade science biology cell structure interactive biology4kids
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<!--MAIN CONTENT AREA--> 
Cells are the Starting Point
All living organisms on Earth are divided in pieces called cells. -
A main purpose of a cell is to organize
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It is easier for an organism to grow and survive when cells are present.
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if you were only one cell you couldn't have a nervous system
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There are many types of cells. In biology class, you will usually work with plant-like cells and animal-like cells.
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24 Apr 14
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31 Mar 14
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All living organisms on Earth are divided in pieces called cells.
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All living organisms on Earth are divided in pieces called cells.
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26 Mar 14
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17 Mar 14
Morgan HildrethBiology4Kids.com! This tutorial introduces cell structure. Other sections include plants, animal systems, invertebrates, vertebrates, and microorganisms.
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11 Mar 14
Jessie BurmeisterBiology4Kids.com! This tutorial introduces cell structure. Other sections include plants, animal systems, invertebrates, vertebrates, and microorganisms.
EDUC325 cells science biology cell structure interactive Organelles
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10 Mar 14
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08 Mar 14
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12 Feb 14
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laurakuzmiczBiology4Kids.com! This tutorial introduces cell structure. Other sections include plants, animal systems, invertebrates, vertebrates, and microorganisms.
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10 Jan 14
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30 Oct 13
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A main purpose of a cell is to organize.
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each cell has a different set of functions.
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24 Jun 13
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10 Jun 13
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25 Apr 13
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You don't find single cells that are as large as a cow. Also, if you were only one cell you couldn't have a nervous system, no muscles for movement,
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12 Mar 13
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03 Oct 12
didonatombahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
cells Organelles science biology4kids biology cell structure interactive
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Cells are the Starting Point
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organelles
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tissues
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systems
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A main purpose of a cell is to organize
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If you were only made of one cell, you would only be able to grow to a certain size.
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plant-like cells and animal-like cells
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There are many types of cells. In biology class, you will usually work with
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multinucleated
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Cody Burchscience scells
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Ceci DufCells-science
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28 Aug 12
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09 Aug 12
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20 Jun 12
Korinne KellyPart 1 of Plant Unit - Plant Cells Structure & Function
cells biology science plants structure function organelles interactive
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05 Jun 12
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11 Apr 12
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08 Mar 12
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05 Mar 12
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Kirsten Svery helpful explanation on everything!!
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29 Feb 12
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28 Feb 12
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27 Feb 12
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A main purpose of a cell is to organize
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We say animal-like because an animal type of cell could be anything from a tiny microorganism to a nerve cell in your brain
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Plants have the wall; animals do not
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Cells are unique to each type of organism
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Some cells are used to carry oxygen (O2) through the blood (red blood cells) and others might be specific to the heart.
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01 Jan 12
Miss RothwellA great website with pages on all types of cell organelles whose structure and function is described in a basic manner.
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