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Notes:  Ch. 5.1-  Fluid Mosaic Model of Membranes

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Notes:  Ch. 5.1-  Fluid Mosaic Model of Membranes

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Read & take notes and label drawings (when necessary) in your AP Biology notebook.

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EQ:  Can you explain cell membrane permeability?

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EQ:  Can you explain cell membrane permeability?

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Cell membrane permeability is the function in which a cell membrane determines what molecules can pass through the cell. Small hydrophobic molecules can easily pass through the cell membrane.

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Drop in a screenshot of your scored FAQ. Reflect on what you learned about how the FAQs are scored, and how you think you can plan for the next one.

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EdPuzzle: 1. Cell Membranes & Permeability

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EdPuzzle: 1. Cell Membranes & Permeability

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(Might have already completed this)

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What kinds of molecules can flow freely across the membrane and which need to use embedded channels or use transport proteins?

The molecules that can move across the membrane freely are small molecules like water, oxygen and carbon dioxide. Substances like sugars and ions like potassium, also bigger molecules need embedded channels or proteins

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Absent

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Meet with your team and have each person in your team create a slide that covers the topic below.  The rules:  You must use your own words and have image and words on each slide.  The slides need to be done by Friday night, but be ready to share on Monday. Have your Team Leader share the slidedeck with me and turn it in by Friday night. Refer to the Unit 2 Checklist (under Resources in Google Classroom)

Topics:
2.1-2.6

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EdPuzzle:  2. Cell Membrane-Permeability

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EdPuzzle:  2. Cell Membrane-Permeability

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(Might have already completed this)

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Notes:  Ch. 5.2-  Some substances can cross the membrane by diffusion

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Notes:  Ch. 5.2-  Some substances can cross the membrane by diffusion

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Read & take notes and label drawings (when necessary) in your AP Biology notebook.

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Spend time completing your Team Slides & Padlet 8A today.

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Spend time completing your Team Slides & Padlet 8A today.

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Absent

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AP Classroom Video 2.7- Facilitated Diffusion

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AP Classroom Video 2.7- Facilitated Diffusion

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AP Daily Video 2.7 Questions (Answer here)

1. Large quantities of water can pass through special membrane proteins called ____aquaporins__________

2. Active transport uses carrier proteins called _______pumps________ and help establish and maintain _________concentration__________ ___gradients___________________

1. ________Cotransport__________  uses the energy from an electrochemical gradient to transport two different ions across the cell membrane.  If the two ions are transported in the same direction, it is called ______symport _________, if the two ions are transported in opposite directions, it is called ____antiport______________

1. The movement of ions across the cell membrane may result in the creation of an ___electrochemical___________________________  gradient. This gradient results in a membrane potential or voltage across the membrane.

1. The sodium-potassium pump uses ATP to pump three ____sodiums________ ions out of the cell for every two _________potassiums_________ ions it pumps into the cell.  This creates a _______membrane ___________  _____potential______________.

1. If ADH secretion is inhibited, what would be the result?The person would produce greater amounts of dilute urine

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EdPuzzle:  3.  Membrane Permeability Beetroot Practical

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EdPuzzle:  3.  Membrane Permeability Beetroot Practical

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Add in a gif of ADP changing into ATP or the reverse.  If you cannot find a gif, use labeled images.

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Add in a gif of ADP changing into ATP or the reverse.  If you cannot find a gif, use labeled images.

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Video 2.6

After the video, Answer the following question here:
AP Daily Video 2.6 Membrane Transport

1.  Passive transport is the movement of molecules from areas of __high____ concentration to areas of _____low_ concentration ____________without___ the use of metabolic energy.

2. The two types of passive transport are ___diffusion______________ and ____facilitated________  __diffusion ________

3. Explain two ways in which facilitated diffusion is different from diffusion. Facilitaed diffusion is done through TRANSPORT PROTEINS. Diffusion is simple and done through the bilipid layer

4. Active transport requires _____direct input of energy_________ to move molecules from areas of ____low_____ concentration to areas of ______high_______ concentration.

5.List and describe the three types of endocytosis.
Phagocytosis - takes in large particles
Pinocytosis - takes in extracellular fluid containing dissolved substances
Receptor-meditated endocytosis - receptor proteins on cell membrane used to capture specific molecules

6. What are some things the cell might secrete through the process of exocytosis?