Cell membrane characteristics and functions Learning objectives Use

Cell membrane characteristics and functions Learning objectives: Use representations and models to pose scientific questions, find claims, evidence and reasoning about the properties of cell membranes and selective permeability based on molecular structure using soap bubble. Construct models using soap bubbles to connect the movement of molecules across membranes with membrane structure and function.

Essential question How are the structure and functions of the cell membrane related?

Simulations of cell membrane using soap bubbles Set up: Bend 4 straws at elbows. b. Flatten the shorter ends of straws and fold flatted surface in the middle. c. Connect straws together by inserting short ends into long ends to create a square.

Question #1: Are membranes fluid and flexible? Claim: Evidence: Research and model the membrane with soap bubbles. Reasoning (analysis): Describe how the soap bubble was used to model the cell concept.

Challenge Research to find a claim, evidence and reasoning to the following question: 2 -What does happen to the cell if cell membrane rupture? Students can read the below science article and also internet to do the task. Cell Membrane Fluid–Mosaic Structure and Cancer Metastasis. http: //cancerres. aacrjournals. org/content/canres/ea rly/2015/03/18/0008 -5472. CAN-14 -3216. full. pdf.

Wrap up