what are the types of passive and active transport?

Answer 1

Passive transport is when subtances can move across the plasma membrane without any input of energy by the cell

Eg : Simple Diffusion, Osmosis and Facilitated diffusion

While active transport is the movement of molecules or ions against the concentration gradient across the plasma membrane.

Eg :Carrier protein

Answer 2

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RE:
what are the types of passive and active transport?

Answer 3

Concerning passive transport; the types are following - osmosis, diffusion and facilitated diffusion
and for active transport, there are two types: exocytosis and endocytosis (pino- and phagocytosis). The description of active/passive transport you will find at http://www.sirinet.net/~jgjohnso/homeostasis.html

Answer 4

Active -
Larger molecules such as starch can be actively transported across the cell membrane by processes known as endocytosis and exocytosis.

Primary: Directly uses energy to transport across the membrane. Best example is sodium potassium pump.

Secondary: Doesn't directly use energy, but uses electrochemical potential difference.

Counter-transport: one substance passively transports, which yeilds the entropic energy to drive the transport of the other substance actively

Co-transport: also uses the flow of one substance from high to low concentration to move another molecule.

Passive -
Diffusion: substances go across the membrane from an area of high concentration to an area of low concentration until they reach dynamic equilibrium

Facilitated diffusion: substances still go from areas of high to low concentration, but but they cross the cell membrane using transport proteins.

Filtration: The cardiovascular system creates pressure and some substances are able to go through the membrane pores, but some are too big and are not able to.

Osmosis: Water goes from an area of low solute concentration to an area of high solute concentration until the concentartions reach dynamic equilibrium.