Cellular Transport Unit

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Presentation transcript:

Cellular Transport Unit Passive Transport = movement of substances across the cell membrane without any input of energy by the cell INNER LIFE: 3 mins: https://www.youtube.com/watch?v=wJyUtbn0O5Y https://www.youtube.com/watch?v=Qqsf_UJcfBc 1 min, 27 sec

Passive Transport

Types 1) Diffusion = movement of molecules from high to low (concentration) - driven by the concentration gradient - spreads out evenly till dynamic equilibrium is reached

Diffusion

2) Osmosis = diffusion of water

How did it go with the sub? Grade the sub from 1-10 Grade yourself from 1-10 (very well behaved)

Do Now: what do you remember? What is passive transport? Does passive transport go with the concentration gradient or against? List two types of passive transport which we learned so far Define each type

3) Facilitated Diffusion = move molecules across the cell membrane through carrier/transport proteins (PASSIVE) - are specific for the type of molecule they help diffuse

Facilitated Diffusion (Open Channels)

Facilitated Diffusion (Proteins Change Shape)

Diffusion vs. Facilitated Diffusion Diffusion Facilitated Diffusion

Active Transport = substances can cross the cell membrane with an input of energy from the cell

Active Transport: Protein Pump used to move molecules against concentration gradient

1) Endocytosis = the process by which cells ingest “stuff” - vesicle holds the “stuff”

Endocytosis Vesicle

2) Exocytosis = the process by which cells release “stuff” - is essentially the reverse of endocytosis

Exocytosis Vesicle

Take out your membrane model On lined paper, using your model: Describe each type (3) of passive transport we learned as it relates to your model Describe each type (3) of active transport we learned as it relates to your model Turn in as classwork grade: if not finished will be HW