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Name: Date:______ Period:____ Study Guide: Cell KEY Directions
Name: Date:______ Period:____ Study Guide: Cell KEY Directions

... B. Write your very own definition for the term “cell.” HINT: DO NOT take a book definition. Imagine you are explaining this word to a person who has never heard it. Use your own words, phrases, and adjectives . Use anything and everything that you learned.)  Use your Cell Guided Notes A cell is the ...
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Reproduction in cells - Allen County Schools
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Cell Organelles and Functions

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Cells - 2011sec1lss
Cells - 2011sec1lss

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Cell Membrane - Campbell County Schools
Cell Membrane - Campbell County Schools

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No Slide Title - Cloudfront.net
No Slide Title - Cloudfront.net

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Cellular Organelles

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Plant Cell Walls1 - Plant Physiology

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Chapter 6 and 9 - Wando High School
Chapter 6 and 9 - Wando High School

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Name: Date: Period: _____ AP Unit 2 Review Packet: Cell Structure
Name: Date: Period: _____ AP Unit 2 Review Packet: Cell Structure

... 35. The solutions in the arms of a U-tube are separated at the bottom of the tube by a selectively permeable membrane. The membrane is permeable to sodium chloride but not to glucose. Side A is filled with a solution of 0.9 M glucose and 0.3 M sodium chloride (NaCl), and side B is filled with a solu ...
Scientific Name: Chenopodium murale L
Scientific Name: Chenopodium murale L

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Review L8 L11
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< 1 ... 127 128 129 130 131 132 133 134 135 ... 312 >

Cell wall



The cell wall is a tough, flexible and sometimes rigid layer that surrounds some types of cells. It surrounds the cell membrane and provides these cells with structural support and protection. In addition, the cell wall acts as a filtering mechanism. A major function of the cell wall is to act as a pressure vessel, preventing over-expansion when water enters the cell. Cell walls are found in plants, fungi and prokaryotic cells but not in mycoplasmas.The composition of the cell wall varies between species and may depend on cell type and developmental stage. The primary cell wall of land plants is composed of the polysaccharides cellulose, hemicellulose and pectin. In bacteria, peptidoglycan forms the cell wall. Archaean cell walls have various compositions, and may be formed of glycoprotein S-layers, pseudopeptidoglycan, or polysaccharides. Fungi possess cell walls made of the glucosamine polymer chitin, and algae typically possess walls made of glycoproteins and polysaccharides. Unusually, diatoms have a cell wall composed of biogenic silica. Often, other accessory molecules are found anchored to the cell wall.
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