Unit 2: Regulating an Internal Environment
Vocabulary: phospholipid, glycerol, fatty acid, hydrophobic, hydrophilic, transport
protein, receptor protein, marker protein, lipid bi-layer, fluid mosaic model,
selective permeability, diffusion, concentration gradient, dynamic equilibrium,
osmosis, hypotonic, hypertonic, isotonic, turgor pressure, passive transport, active
transport, facilitated diffusion, endocytosis, exocytosis, prokaryotic cells,
homeostasis
Student Objectives:
















I will be able to explain the reason for the difference between polar and nonpolar molecules.
I will be able to explain the forces exerted among polar and non-polar
molecules.
I will be able to describe the phospholipid molecule (major component of a
cell membrane) in terms of chemical composition, areas of polarity/ nonpolarity, and orientation.
I will be able to draw what a phospholipid molecule looks like and label
parts.
I will be able to label and describe a fluid mosaic plasma membraneincluding phospholipids, hydrophilic and hydrophobic ends, cholesterol and
transport proteins.
I will be able to describe the role of each component of the fluid mosaic
plasma membrane.
I will know why the plasma membrane is selectively permeable and which
materials will readily pass across the membrane and those that will not.
I will know the process of diffusion and what dynamic equilibrium means.
I will know how random motion influences diffusion due to kinetic energy
and concentration gradients.
I will know the difference between isotonic, hypotonic ad hypertonic
solutions. I will be able to accurately predict water movement into and out of
each type of solution.
I will be able to describe the three main types of passive transport: simple
diffusion, osmosis, and facilitated diffusion.
I will be able to compare and contrast three main types of passive transport.
I will be able to describe the process of active transport and explain why
energy is needed.
I will be able to describe endocytosis and exocytosis, both processes of active
transport.
I will understand the basic structure of prokaryotic cells and be able to draw
it.
I will be able to include the role of the plasma membrane, need for
appropriate metabolism and maintaining homeostasis in prokaryotes.