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Cell Membrane Electron Transport Chain Biochemical Pathway
684 words1. The cell membrane structure is vital to the life of the cell. The cell membrane is shaped as having a phosphate head at the very outer surface, and two fatty acid tails hanging from it. The membrane is double, so at the tip of the fatty acid tails, there are two more fatty acid tails attached to another phosphate head. This is what it looks like: The reason the cell membrane is shaped like this is mainly to control the water flow in and out of the cell. Water is very important to the cell: if...
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Plasma Membrane Permeable Membrane
777 wordsThe plasma membrane is the boundary of life; this selectively permeable membrane allows the cell to maintain a unique internal environment and to control the movement of materials into and out of the cell. The phospholipid bilayer (fluid music model) with specific membrane proteins accounts for he selective permeability of the membrane and passive and active transport mechanisms. Membrane phospholipids are amphipathic. Cell membranes are phospholipid bilayers with the hydrophobic hydrocarbon tai...
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Plasma Membrane Passive Transport
834 wordsBeing one of the most important components of a cell, the plasma membrane, or cell membrane plays a huge role in regulating how things get in and out of cells. The plasma membranes unique structure enables it to let only certain molecules pass through the cell. This ability is called selective permeability. Most of the plasma membrane in most cells is made up of a phospholipid bilayer with proteins either embedded into it or sticking out from either side of the membrane. The heads of the phospho...
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E T C Plasma Membrane
448 wordsThe way in which a membrane is assembled decides what is allowed in and out of a cell and how it advances through the cell membrane. Certain molecules can simply pass through the cell membrane through diffusion. Diffusion is a type of passive transport meaning no energy is used for the substance to enter or leave the cell. Another way for molecules to enter the cell is through facilitated diffusion. When a molecule is simply to large to diffuse through the cell membrane it can enter the cell thr...
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Nucleic Acids Amino Acids
426 wordsIn this assesment the student will identify the characteristics and roles of carbohydrates, proteins, lipids, and nucleic acids in a living system. Write a 4 paragraph report describing the atoms in the compound building blocks, types, structure, and function of each. The student must also describe what they would do if they were given a jar with an unknown substance to find out wether or not it contained any of the substances listed above. Proteins: Proteins are long chains of amino acids that ...
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Passive Transport Active Transport
229 wordsThe membrane has a double lipid layer through which fat- soluble substances will move, by passive transport or diffusion. The molecules will only move through if they are small enough. There are globular protein regions, which are hydrophilic. These regions allow water and water soluble substances through, but only if they are small enough, for example starch grains are too big. These substances move through by passive transport or diffusion. Diffusion is the passive movement of substances from ...
Free research essays on topics related to: passive transport, fluid, transport, diffusion, active transport
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