Aim: How are Passive & Active Transport Different? DO NOW: 1.Explain the meaning of the picture. 2.Which path will you choose to take? Why?

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Presentation transcript:

Aim: How are Passive & Active Transport Different? DO NOW: 1.Explain the meaning of the picture. 2.Which path will you choose to take? Why?

Meaning of Term ‘Concentration’ How much you have of something

Passive Transport Transport of molecules across the cell membrane from an area of higher concentration to an area of lower concentration Easy for the cell to do (no ATP energy needed) Similar to riding your bike downhill Diffusion is a type of passive transport Osmosis is a type of passive transport Facilitated Diffusion is a type of passive transport

Diffusion of Sugar

Osmosis of Water

Diffusion of O 2 & CO 2

Facilitated Diffusion Transport protein in cell membrane “helps out” or facilitates (makes transport easier)

Active Transport Transport of molecules across the cell membrane from an area of lower concentration to an area of higher concentration Hard for the cell to do (ATP energy needed) Similar to riding your bike uphill

Passive vs. Active Transport

Animation mations/content/diffusion.html mations/content/diffusion.html ml ml

BrainPop Video eandgenetics/passivetransport/ eandgenetics/passivetransport/ dchemistry/diffusion/ dchemistry/diffusion/ eandgenetics/activetransport/ eandgenetics/activetransport/

Homework Read textbook pages and answer questions 1, 2 and 4 on page 207. Write out questions and answers.