Lesson: Cell Structures and Membranes
How do the structures within cells and cell membranes help to regulate their functions?
This lesson identifies the structures within cells and their functions. Students will begin to relate organelles to larger intra-cellular and inter-cellular processes.
Recognize the basic structures (anatomy) of a cell.
Understand the functions (physiology) of the cell organelles and other structures.
This lesson also describes the composition, structure and regulation of the cell membrane. Students will examine how the membrane is responsible for the transfer of materials and discuss specific diseases that result from the disruption of membrane structures.
Lesson: Cell Membrane
What organic molecules compose the cell membrane, and how are they arranged within the membrane?
What is the essential difference between passive and active transport?
What molecule carries energy within a cell?
Compare and contrast diffusion and osmosis.
What is filtration?
Understand the terms hypertonic, isotonic, and hypotonic and explain how a cell will behave when placed in such a solution (lyse/crenate/no change).
What organic molecule makes up ion pumps?
Differentiate between pinocytosis and phagocytosis.
Understand the pathology of cystic fibrosis: cause, symptoms, treatment.
Warm Ups:
Organelle Matching
Organelle Function
Practice Quiz
Cell Membrane
Instruction, Presentations, Assignments, Activities, etc:
Diagram - Plasma Membrane
identify the four main components of the cell membrane
Carbohydrate Chains- cell signalling on outside of membrane
Phospholipid- Phosphate with 2 fatty acid- "head" polar/hydrophilic and "tails" non-polar/hydrophobic - form a bilayer in an aqueous solution
Cholesterol- 4-linked rings of hydrophobic lipid- structural support within membrane
Protein- structural support or funcional (transport, signalling, cell products/enzymes)
Fluid Mosaic Model: small pieces that are in constant motion
Closure- Haiku :A traditional form of Japanese poetry that follows a format. It normally contains 3 lines and a total of 17 syllables.
5 syllables
7 syllables
5 syllables
Haiku often explore or include themes involving nature or natural elements.
Compose a haiku about an organelle that creatively also expresses information about its structure and/or function.
Assessment: Quiz- organelles (Identify structure AND function)
Web Resources:
Video on Membrane Structure and Transport- http://www.5min.com/Video/The-Plasma-Membrane-The-Fluid-Mosaic-Model-150624059
Reinforcement: http://www.dnatube.com/video/1364/Action-Potential--Epilepsy