Transeort ot Su The plasma membrane is a only specific substances are allowed to

Question

Transeort ot Su The plasma membrane is a only specific substances are allowed to move across the phospholipid bilyer not require energy and substances move membrane heref theie concentration gradient. Conversely transport requires energy in the form of their concentration gradient and lipid-solkuble molecules. An example of this type of diffusion would be blood to tissues. diffusion is a type of passive transport that allows for the diffusion of small gases being tramiported from dffusion requires the use of a channel to transport -across the membrane. diffusion requires a carrier protein to transport such as down its concetration gradient is the diffusion of water across the plasma membrane. Water ditfuses from the area of If an animal cell is solute concentration toward the area of solute concentration because the higher placed ina solute concentration is located inside the cel if an animal cel is placed in a the cell will solution, the cel wil soution, because water moved out of the cell transport is the sodium-potassium ATPase pump. This pumg into the cef. The One example of out of the cell for every 2 uses _ to transport 3 pump requires the use of concentration gradients. The activity aof the sodlum-potassium ATPase pump will generate a membrane potential Membrane potential is defined as and measured in in order to move sodium and potassium s a type of active transport that transports large substances into the cel, while of the cell. transports large substances the rether cencentrations of each substance and shew whic

Explanation / Answer

the plasma membrane is a semi-permeable membrane. therefore only specific substances are allowed to move across the phospholipid bilayer. passive transport does not require energy and substances move down their concentration gradient. conversely, active transport requires energy in the form of ATP to move the substance against the concentration gradient. simple diffusion is a type of passive transport that allows diffusion of small gases and lipid soluble molecules. An example of this type would be oxygen being transported from blood to tissues. Facilitated diffusion requires the use of the channel to transport molecules across the membrane. facilitated diffusion requires a carrier protein to transport molecules such as ions down the concentration gradient. osmosis is the diffusion of water along the plasma membrane. water diffuses from an area of high solute concentration towards the area of low concentration. if an animal cell is placed in hypotonic solution the cell will swell because of higher solute concentration is located inside the cell. if an animal cell is placed in a hypertonic solution cell will shrink because later moved out.

one example of active transport is the sodium-potassium pump. this pump uses ATP to transport 3 sodium out of the cell for every 2 potassium into the cell. this pump requires the use of ATP to move sodium and potassium against their concentration gradient. the activity of sodium-potassium pump generates a membrane potential. the memebrane potential is measured in volts. endocytosis is a type of active transport that transport large substances into the cell, while exocytosis transports large substance out of the cell

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