Cell membranes separate the internal environment of the cell from the external environment. The specialized structure of the cell membrane described by the fluid mosaic model allows the cell to be website cellsselectively permeable, with dynamic homeostasis being maintained by constant movement of molecules across the membrane. Students will be able to differentiate between types of transport that cell use including passive transport- diffusion, osmosis and facilitated diffusion and active transport – using sodium potassium pumps, endocytosis and exocytosis, so that they can design an investigation and gather evidence to support explanations of transport of water across a cell membrane when a cell  is placed in a hypotonic, isotonic and hypertonic solutions respectively. Eukaryotic cells also maintain internal membranes that partition the cell into specialized regions. The students will be able to support the claim that membrane bound organelles help cells operate with optimal efficiency by increasing beneficial interactions, decreasing conflicting interactions and increasing surface area for chemical reactions occur. They will mathematically determine the surface area-to-volume ratios to predict which cell(s) might eliminate wastes or procure nutrients faster by diffusion. Based on these calculations they will design a cell to maximize the overall rate of nutrient intake and the rate of waste elimination.

website resources
Lectures and Notes:

Honors Biology Syllabus
Student Notes: Unit 2 (Chapter 3)

PowerPoint Lecture: Unit 2 (Chapter 3)
Kahoot: Cell Organelles
Kahoot: Cell Transport
Kahoot: Cell Review


Formal Lab Write-up
Cell Cartoon
Defining Terms: Chapter 3
Unit 2: Test Review (Cells)
PowerPoint Grading Rubric: Unit 2 Test Review (Cells)
Pogil: Prokaryote and Eukaryote Cells-S
Pogil: Organelles in Eukaryote Cells-S
Pogil: Cell Size-S
Pogil: Transport in Cells-S
Study Guide: Unit 2 Test

Labs and Classroom Activities:

Lab: Diffusion
Lab: Cell Transport
PowerPoint: Cell Transport and Turgor Pressure
Lab: Diversity of Cells
PowerPoint: Lab-Diversity of Cells
Lab: Inside Cell Worksheet
Lab: Osmosis (Student Designed)

Textbook Resources:

Textbook Online Resourcesbiolog3[1]
Textbook Practice Quizzes Unit 2
Chapter 3 Review Game
Textbook Animated Biology
Practice Tests: Biology Junction


Ted-Ed The wacky history of cell theory
Ted-Ed How we think complex cells evolved
Ted-Ed Insights into cell membranes via dish detergent
Cell Membranes and Cell Transport
Osmosis: A Solute and Solvent Love Story
Prokaryotes and Eukaryotes
Homeostasis (and the Cell Membrane King)
Review: Cell Structure and Function