Transport Mechanisms Summary

Created by: Jasmine
Created on: 19-02-16 16:57

Diffusion

It is the net movement of particles from an area of high concentration to an area of lower concentration. It is a passive process- does not require energy

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Osmosis

It is the movement of water molecules across a partially permeable membrane down a water potential gradient from an area of higher water potential to an area of lower water potential. It is a passive process- does not require energy

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Facilitated Diffusion

It is the net movement of particles from an area of higher concentration to an area of lower concentration. It uses carrier proteins for larger molecules and channel proteins for smaller ions and polar molecules. It is a passive process

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Active Transport

It is the movement of molecules against a concentration gradient. It uses carrier proteins and is an active process- requires energy (ATP)

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Endocytosis

It is the movement of larger molecules into a cell. Plasma membrane surrounds a substance then pinches off to form a vesicle. It is an active process- requires energy (ATP)

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Exocytosis

It is the movement of molecules out a cell. The vesicle fuses with the plasma membrane and releases its contents. It is an active process- requires energy (ATP)

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Card 2

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Back

Osmosis

Card 3

Front

Back

Card 4

Front

It is the movement of molecules against a concentration gradient. It uses carrier proteins and is an active process- requires energy (ATP)

Back

Card 5

Front

It is the movement of larger molecules into a cell. Plasma membrane surrounds a substance then pinches off to form a vesicle. It is an active process- requires energy (ATP)

Back

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Transport Mechanisms Summary