9- Diffusion Lesson Plan PDF

Plan  Task 1: stem cell starter (10 with entrance)  Task 2: Find the facts (5)  Task 3: Two truths & a lie (5)  Task 4: watch video, answer Qs (10 with feedback)  Task 5: Respiration (10)  Task 6: factors effecting (10)  Task 7: Extension Qs (10 ish, only do if time) ...

Plan  Task 1: stem cell starter (10 with entrance)  Task 2: Find the facts (5)  Task 3: Two truths & a lie (5)  Task 4: watch video, answer Qs (10 with feedback)  Task 5: Respiration (10)  Task 6: factors effecting (10)  Task 7: Extension Qs (10 ish, only do if time)  T or F: Seating plan & Starter Qs Stem cells specialise into new, specific cells Adult and embryonic stem cells are the same Stem cell treatments are experimental and risky True or false  Stem cells specialise into new, specific cells o False! They differentiate into new cells that then can specialise into specialsed cells  Adult and embryonic stem cells are the same o False! Embryonic can differentiate into any cell, adult is more restricted  Stem cell treatments are experimental and risky o True! Many stem cell therapies are still experimental, and there are risks involved, including rejection and ethical concerns.  Pens = T MORE true or false! Books = F True False DIFFUSION  Find the facts Convert this Where particles of gases or liquids spread information out from an area where there are lots of them into 4 facts to an area where there are fewer of them. The particles move from an area of high concentration to an area of low concentration. Particles move down a concentration gradient. The process happens naturally, and no additional energy is needed for it to happen. It is a passive process.  Find the facts Convert this Where particles of gases or liquids spread information out from an area where there are lots of them into 4 facts to an area where there are fewer of them. The particles move from an area of high concentration to an area of low concentration. Particles move down a concentration gradient. The process happens naturally, and no additional energy is needed for it to happen. It is a passive process.  Find the facts Gases or liquids move from an area of high concentration to an area of low concentration. Particles move down a concentration gradient and is a passive process. Two truths & a lie 1. Particles move from an area of high concentration to low concentration 2. Particles move down a concentration gradient 3. Diffusion requires energy, and is an active process Answers 1.Particles move from an area of high concentration to low concentration 2.Particles move down a concentration gradient 3.Diffusion requires energy, and is an active process How do molecules move? randomly What does net movement Movement of all particles as a mean? group What does ‘partially Only some moelecules can diffuse permeable’ mean? through Name 2 examples of smaller Water, glucose, AA molecules that can pass Proteins and starch through the membrane and 2 bigger ones that can not. What are the 3 factors that Concentration, temp and SA effect the rate of diffusion? Diffusion in the Gas exchange takes lungs: place in the ALVEOLI High Low Alveoli Diffusion Capillary Oxygen moves DIFFUSIO by N ______ from the ______ into ALVEOLI the ________ CAPILLARY/ BLOOD. Oxygen move from HIGH a _____ LOWto _____ concentration. What about Carbon dioxide? Where does the carbon dioxide in our blood comeAerobic from? respiration in cells it get out of How does our blood? Diffusion from blood (high concentration) into alveoli (low concentration.) FACTORS AFFECTING DIFFUSION Factor How it affects diffusion Temperature The higher the temperature, the more kinetic energy the particles will have, so they will move and spread quickly Surface area The higher the surface area, the faster the rate of diffusion. Concentration The greater the difference in concentration, the quicker gradient the rate of diffusion.  Pens = A Books =B For each scenario, decide whether diffusion will happen faster in A or B Be prepared to justify your answer  Pens = A HIGHER OR LOWER? Books = B A 20ºC B 40ºC HIGHER OR LOWER? Pens = A Books = B A B HIGHER OR LOWER? Pens = A Books = B A B Cells can be adapted to increase rates of diffusion Folding= higher surface area For each: Have you mentioned where concentration is high and where it is low? Have you mentioned the direction of diffusion?