Problem:
Question 1: Describe the structure and give the function of the plasma membrane, including the words phospholipid bilayer, hydrophobic tail, hydrophilic polar head, embedded proteins and peripheral proteins.
Question 2: What organelle makes phospholipids? How does a phospholipid differ from a fat molecule?
Question 3: What does it mean when we say the plasma membrane is "differentially permeable"?
Question 4: What are the mechanisms by which substances enter and exit cells? Which are passive (no energy or ATP needed) ways, and which are active ways?
Question 5: Name three molecules that enter the cell by simple diffusion.
Provide a brief explanation for your answer.