MiniUnit Sections 3 4 3 5 Active vs

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Mini-Unit Sections 3 -4 & 3 -5: Active vs. Passive Transport

Mini-Unit Sections 3 -4 & 3 -5: Active vs. Passive Transport

3. 5 Active Transport, Endocytosis, and Exocytosis KEY CONCEPT- Cells use energy to transport

3. 5 Active Transport, Endocytosis, and Exocytosis KEY CONCEPT- Cells use energy to transport materials that cannot diffuse across a membrane.

3. 5 Active Transport, Endocytosis, and Exocytosis Objectives for section 3 -5 Ø Explain

3. 5 Active Transport, Endocytosis, and Exocytosis Objectives for section 3 -5 Ø Explain how proteins transport materials against the concentration gradient Ø Differentiate between exocytosis and endocytosis

3. 5 Active Transport, Endocytosis, and Exocytosis Ø Active transport requires energy input from

3. 5 Active Transport, Endocytosis, and Exocytosis Ø Active transport requires energy input from a cell and enables a cell to move a substance against its concentration gradient. • Powered by chemical energy (ATP). • Occurs through transport protein pumps.

3. 5 Active Transport, Endocytosis, and Exocytosis Ø Cells use active transport to maintain

3. 5 Active Transport, Endocytosis, and Exocytosis Ø Cells use active transport to maintain homeostasis. • Sodium/Potassium ATPase pump (Na+/K+ ATPase pump) o Important in animal cells (especially in neurons or nerve cells) o Pumps three sodium ions (Na+) OUT o Pumps two potassium (K+) INTO cell o Both AGAINST their conc. gradient & powered by ATP

3. 5 Active Transport, Endocytosis, and Exocytosis Outside cell inside cell

3. 5 Active Transport, Endocytosis, and Exocytosis Outside cell inside cell

3. 5 Active Transport, Endocytosis, and Exocytosis Ø A cell can import and export

3. 5 Active Transport, Endocytosis, and Exocytosis Ø A cell can import and export large materials or large amounts of material in vesicles during the processes of endocytosis and exocytosis. • Cells use energy to transport material in vesicles. • Endocytosis is the process of taking material into the cell.

3. 5 Active Transport, Endocytosis, and Exocytosis ØTwo (3) types of endocytosis Phagocytosis is

3. 5 Active Transport, Endocytosis, and Exocytosis ØTwo (3) types of endocytosis Phagocytosis is where cell membrane engulfs large particles § “Cell eating” § Immune system §

3. 5 Active Transport, Endocytosis, and Exocytosis Pinocytosis is where cell membrane engulfs extracellular

3. 5 Active Transport, Endocytosis, and Exocytosis Pinocytosis is where cell membrane engulfs extracellular fluid in a vesicle • “Cell drinking” •

3 -5: Phagocytosis vs. Pinocytosis Phagocytosis vs. Pinocytosis

3 -5: Phagocytosis vs. Pinocytosis Phagocytosis vs. Pinocytosis

3. 5 Active Transport, Endocytosis, and Exocytosis ØExocytosis is the process of expelling material

3. 5 Active Transport, Endocytosis, and Exocytosis ØExocytosis is the process of expelling material from the cell • Messages from brain to cells via nerves

3. 5 Passive vs. Active Transport High conc Low conc & Osmosis • no

3. 5 Passive vs. Active Transport High conc Low conc & Osmosis • no energy Uses Carrier protein High conc Low conc Na+/K+ ATPase pump • Requires energy (ATP) Uses Carrier protein

Crash Course Biology #5 – Membranes and Proteins

Crash Course Biology #5 – Membranes and Proteins

3 -5 Quick Quiz Time üEach question will be worth 2 points üYou may

3 -5 Quick Quiz Time üEach question will be worth 2 points üYou may NOT talk and/or communicate with a classmate üScores will be collected and recorded at the end of the chapter

3 -5 Quick Quiz 4. Unlike passive transport, active transport requires A. Concentration gradients

3 -5 Quick Quiz 4. Unlike passive transport, active transport requires A. Concentration gradients B. Diffusion C. Energy from the cell D. vesicles

3 -5 Quick Quiz 5. Cells use active transport proteins to A. Obtain molecules

3 -5 Quick Quiz 5. Cells use active transport proteins to A. Obtain molecules they need B. Break down molecules C. Engulf large particles D. Detect the charge of molecules

3 -5 Quick Quiz 6. Which process is used to release insulin from pancreatic

3 -5 Quick Quiz 6. Which process is used to release insulin from pancreatic cells into the bloodstream? A. exocytosis B. endocytosis C. Facilitated diffusion D. Sodium/Potassium ATPase pump

Trade your paper with a non-lab partner

Trade your paper with a non-lab partner

3 -5 Quick Quiz 4. Unlike passive transport, active transport requires A. Concentration gradients

3 -5 Quick Quiz 4. Unlike passive transport, active transport requires A. Concentration gradients B. Diffusion C. Energy from the cell D. vesicles

3 -5 Quick Quiz 5. Cells use active transport proteins to A. Obtain molecules

3 -5 Quick Quiz 5. Cells use active transport proteins to A. Obtain molecules they need B. Break down molecules C. Engulf large particles D. Detect the charge of molecules

3 -5 Quick Quiz 6. Which process is used to release insulin from pancreatic

3 -5 Quick Quiz 6. Which process is used to release insulin from pancreatic cells into the bloodstream? A. exocytosis B. endocytosis C. Facilitated diffusion D. Sodium/Potassium ATPase pump

End of 3. 5 End of show

End of 3. 5 End of show

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