Unit 2: Membranes - Salmon

5 Classes

Date

Day

IB Topic

Activities

Objectives

Homework

10/2 & 10/3

10

1.3: Membranes

  • Paper 2 Data Practice #1
  • Introduction to Membranes & Transport
  • Begin Membrane Diffusion Potato Lab
  • Transport Animations: Cell Membrane

  • Phospholipids form bilayers in water due to the amphipathic properties of phospholipid molecules
  • Membrane proteins are diverse in terms of structure, position in the membrane, and function
  • Cholesterol is a component of animal cell membranes
  • Application: Cholesterol in mammalian membranes reduces membrane fluidity and permeability to some solutes.
  • 1.3 Notes - Membrane Structure
  • Reading: pg. 125-139

10/4 &  10/5

11

1.3: Membranes

  • Quiz: 1.3 Membrane Structure
  • Transport Animations: Passive Transport
  • Drawing Fluid Mosaic Model
  • Membrane Diffusion Potato Lab
  • Lab Rubrics
  • Design, procedure, hypothesis
  • Lab standards explained
  • Skill: Drawing of the fluid mosaic model.
  • Particles move across membranes by simple diffusion, facilitated diffusion osmosis and active transport
  • The fluidity of membranes allows materials to be taken into cells by endocytosis or released by exocytosis. Vesicles move materials within cells

  • 1.4 Notes - Membrane Transport

10/8 & 10/9

12

1.4: Transport

  • Quiz: 1.4 Membrane Transport
  • Types of Passive Transport
  • Transport Animations: Active Transport
  • Graphing in Excel
  • IB  Data Analysis Practice 1

  • Stats & Graphing
  • Data Analysis Practice 1

10/10 & 10/11

13

1.4: Transport

  • Warm-Up: Passive & Active Transport Review
  • Grade Data Analysis Practice 1
  • Sodium-Potassium Pump
  • Development of Membrane Understanding
  • Hypertonic, Hypotonic & Isotonic
  • Tissues & Osmilarity
  • ER, Golgi, Membrane & Vesicles in Endo & Exo Cytosis  
  • Transport Animations: Endo & Eco cytosis
  • Potato Lab: Analysing Data & Graphing Results
  • Correlations
  • Analysis and collection of data
  • Range of error/error bars
  • Correlation & linear/polynomial regression to estimate osmolarity
  • Skill: Analysis of evidence from electron microscopy that led to the proposal of the Davson-Danielli model.
  • Skill: Analysis of the falsification of the Davson-Danielli model that led to the Singer- Nicolson model.
  • Application: Structure and function of sodium-potassium pumps for active transport and potassium channels for facilitated diffusion axons.
  • Application: Tissues or organs to be used in medical procedures must be bathed in a solution with the same osmolarity as the cytoplasm to prevent osmosis.
  • Skill: Estimation of osmolarity in tissues by bathing samples in hypotonic and hypertonic solutions (Practical 2)
  • Study for Assessment

10/15& 10/16

14

  • Review
  • Membranes Assessment
  • Potato Lab Write Up Work Time & partner peer review

  • Completed Membrane Diffusion Lab

Cells Test Retakes Deadline: 10/15