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| ACTIVE & PASSIVE TRANSPORT |
Passive Transport
Def: a movement of substance across the plasma membrane from higher concentration to the lower concentration without Adenosine Triphosphate (ATP)
Process involved:
Simple diffusion : Movement of oxygen through membrane (kinetic energy)
Facilitated diffusion : Movement of glucose into cells (kinetic energy)
Osmosis : Movement of water in and out of cells (kinetic energy)
Filtration : Formation of kidney filtrate (hydrostatic pressure)
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| Osmosis process |
Osmosis
Def: diffusion of water across a semipermeable membrane.
*Osmolarity is a total concentration of solute particles.
*Tonicity is how a solution affects cell volume.
Effect of Solution of Varying Tonicity
~Hypotonic : solutions having lesser solute concentration than that of the cytosol
~Isotonic : solutions with the same concentration as that of the cytosol
~Hypertonic : solution having greater solute concentration than thaof the cytosol
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| Effect of tonicity in animal and plant cell |
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| Filtration process in kidney |
Active Transport
Def: a movement of substance across the plasma membrane from lower concentration to the higher concentration with Adenosine Triphosphate (ATP)
Process involved:
Active transport of solutes : Movement of ions across membranes (ATP)
Exocytosis : Neurotransmitter secretion (ATP)
Endocytosis : White blood cell phagocytosis (ATP)
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| Exocytosis process |
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| Endocytosis process |
[TO BE CONTINUED]
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