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Q. What are the difference between plasma membrane and cell wall?
Plasma membrane and cell wall is not the same thing. Plasma membrane, also known as cell membrane, is the external membrane common to all living cells and it is made of embedded proteins, phospholipid bilayer and some appended carbohydrates.
Because cell membranes are fragile, in some kinds of cells there are even outer structures that support and defend the membrane, like the cellulose wall of plant cells and the chitin wall of some fungi cells. Most bacteria also present an external cell wall made of peptidoglycans and other organic substances.
Although there is much talk in the news about stem cell research, the public and policymakers need to understand how basic body cells work to transmit information and replicate to
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Menerals are naturally occurring inorganic solids with a crystalline structure and a definite range of chemical formula. Ores are concentrations of minerals in rock.
Solutes and ions tie up water in solution. Solutes lower aw and this reduction in aw depends on the total concentration of dissolved molecules and ions. Since these bind to water m
Essential and Non – Essential Amino Acids The requirement of essential amino acids differs from organism to organism. Some bacteria require only one amino acid in sufficient q
FUNCTIONS OF CELL WALL 1. Provides shape to plant cell rigidity to cells. 2. Functions as a barrier to entry of pathogens into the cells. 3. Provides pr
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Q. What are some examples of biological activities in which osmosis plays an significant role? Hemolysis destruction of red blood cells by entrance of water, the hydric regulat
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