Passive vs. Active Transport Mrs. Harper 10/2/17 Biology

October 2, 2017 Download Notes Begin working on Do Now Have homework Passive Transport WS on pulled up

Do Now 10/2/17 Does active transport require energy? What is the flow of the concentration gradient in passive transport? (high to low or low to high) Explain simple diffusion. Explain facilitated diffusion. Explain osmosis. Name one difference between simple vs. facilitated diffusion. What is the flow of the concentration gradient in active transport? (high to low or low to high)

Transport in the Cell

Passive Transport Does NOT require energy (ATP) Passive = no energy needed

Passive Transport & Concentration Gradient HIGH  LOW Goes with the natural flow

Types of Passive Transport Diffusion Facilitated Diffusion Osmosis

Active Transport DOES require energy (ATP) Active = energy needed

Active Transport & Concentration Gradient LOW  HIGH Goes against the natural flow

Examples of Active Transport Sodium/Potassium Pump Proton Pump Exocytosis Endocytosis

Similarities Both move molecules across membrane Both have a concentration gradient Both are important to the function of the cell

Rapid Review Take 2 minutes to fill in the Venn Diagram below comparing and contrasting passive vs. active transport Try to get at least 4 characteristics/examples in each Do this independently on code red. We will check with partner/whole group in a moment

-Facilitated diffusion -Osmosis -Energy required -Low  High -No energy required -High  Low -Simple diffusion -Facilitated diffusion -Osmosis -Energy required -Low  High -Na+/K+ pump -Proton pump -Endocytosis -Exocytosis -Move molecules -Concentration gradient -Important to cell function