Active and Passive Transport of Molecules Through Plasma Membrane

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The movement of molecules have two forms of transport through the plasma membrane: active transport and passive transport. Active processes require energy, such as ATP, in order for the molecules to be transported. In active transport, the cell administers ATP.i Within passive processes no energy is required and changes n pressure and concentration are the driving forces. Processes such as simple diffusion, facilitated diffusion, osmosis, and filtration are characterized as passive transport, while solute pumps are a form of active transport. Each of these form of transports occur in the cells of all living organisms and are essential to life.
The process of diffusion occurs in and out of a cell when molecules travel from areas of higher
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The movement of molecules have two forms of transport through the plasma membrane: active transport and passive transport. Active processes require energy, such as ATP, in order for the molecules to be transported. In active transport, the cell administers ATP.i Within passive processes no energy is required and changes n pressure and concentration are the driving forces. Processes such as simple diffusion, facilitated diffusion, osmosis, and filtration are characterized as passive transport, while solute pumps are a form of active transport. Each of these form of transports occur in the cells of all living organisms and are essential to life.
The process of diffusion occurs in and out of a cell when molecules travel from areas of higher concentration to region of lower concentration, and this variation in concentration is described as a concentration gradient. i In order for locomotion to occur, the molecules use its kinetic energy and constant motion. The barrier of the cell is its plasma membrane, which allows the passage of molecules through the pores if they are small enough. i The plasma membrane has a phospholipid bilayer which separates the inside (the cytoplasm) and the outside (extracellular fluid and lipid-soluble solutes) of the cell. The fact that the plasma membrane monitors the passage of molecules based on size and solubility constitutes it as semi-permeable.
Diffusion can be categorized as either simple diffusion or facilitated diffusion. A similarity