Question

diferenciate between 1)osmosis n diffusion

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2)diffusion n active transport

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3)active transport n osmosis

Answer 1

Osmosis	Diffusion
Osmosis is the movement of water molecules from a region of lower solute concentration to higher through a semi permeable membrane.	It is the movement of particles in a solution from higher concentration area towards area of lower concentration.
Water is necessary for movement.	Water is not necessary.
Osmosis is the transportation of water.	Diffusion is the transportation of any solute like oxygen, carbon dioxide, salt etc.
Osmosis is a slow process.	Diffusion is a quick process which occurs rapidly.
Osmosis occurs over short distance.	Diffusion occurs over any distance.

Diffusion	Active Transport
It does not require energy.	It requires energy.
It moves substances down their concentration gradient.	It moves substances against their concentration gradient.
It is the movement of a substance from high concentration to region of low concentration.	It is the movement of molecules across their cell membrane against their concentration gradient.

Osmosis	Active Transport
It does not require energy.	It requires energy.
It is the movement of water from area of high concentration to low concentration.	It is the movement of molecules against their concentration gradient.
Water moves through a semi permeable membrane.	Molecules move through cell membrane.