Haveouts Guided Notes Pen/pencil No Privacy Folder DFAD

Haveouts Guided Notes Pen/pencil No Privacy Folder DFAD

Do First: Answer in your DFAD Answer the questions from your Guided Notes as a GROUP, be sure to record your answers in your DFAD. You have 5 mins to work at a level one volume.

Grades will be posted this Friday. Deadline to retake Quiz #13 Parts of a Cell is THIS Friday. After Friday, you can NOT retake Quiz #13. You have until February 1 st to retake Quiz #14 Cell Division. Tutorials will be held afterschool today.

Plasma/Cell Membrane regulates what is able to pass through and what cannot.

The Plasma Membrane Maintains homeostasis: Homeostasis - regulate internal conditions by monitoring the entrance and exit of different molecules and nutrients.

What is the Plasma Membrane like? In this example, think about what will most likely happen to the salsa as it passes through the various kitchen items. What is permeability? What would being party permeable mean? Your voice should be off and tracking the speaker (Mr. Fitz)

Permeable a membrane that allows the passage of all substances regardless of their size or shape.

Semi-permeable a membrane that allows the passage of some molecules, depending on their size and shape.

How it looks in a cell Why is the water molecules able to pass though, while the glucose molecules are not?

Impermeable a membrane that does NOT allow the passage of any molecule, regardless of their size and shape.

Where will these people most likely move to? High Concentration of people on a bus Low Concentration of people on a bus

Concentration 18 7 How many total molecules are inside the cell? How many are outside? Label the concentration inside the cell. Label the concentration outside the cell.

With Concentration Gradient is High to Low Against Concentration Gradient is Low to High High Concentration: Lots of molecules crowded together Low Concentration: Not very many molecules Concentration Gradient: A difference in concentration inside and outside of the cell

Does not require energy From HIGH to LOW Diffusion Facilitated Diffusion

Diffusion the random movement of particles from a high concentration (a lot of them) to a low concentration (spread out).

Facilitated Diffusion proteins help diffusion happen! Usually the molecules are too big to cross membrane on their own

CFU #1: What type of passive transport is the Grey molecule undergoing? Answer this CFU in the box on the bottom right side of your handout.

CFU #2: Yellow molecule is TOO BIG to pass through the cell membrane. What type of passive transport must it undergo? Answer this CFU in the box on the bottom right side of your handout.

CFU: Diffusion and Permeability Turn and Talk Work with a partner to answer each of the 3 questions 1. Which molecule is diffusing across the membrane? 2. Why isn t the other one crossing? 3. Is this facilitated diffusion? Why or why not?

Independent Practice Answer questions all question starting at Independent Practice Work must be done silently and independently. No Talking. If you have a question or request raise a silent hand and be patient. For independent practice, today we will be working silently and independently for 6 minutes.

Group Practice Review the questions answered during Independent practice. Go over each question. Each table member should explain why they selected their answer. Work must be done at a level ONE volume, which means I should not be able to hear you from my desk. Remain in your seat and only talk to people at your table. Make sure to keep conversations on topic. If you have a question or request raise a silent hand and be patient. For group practice, today we will be working for 10 minutes.