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Week 5 Review Quiz

Week 5 Review Quiz

Q 1. Plasma membrane is made mainly composed of _______________.

Q 2. Cells may communicate with each other directly through ________________.

Q 3. Cell membranes allow some molecules to pass through but not others because they are _____________.

Q 4. Explain why phospholipids spontaneously form bilayer when mixed with water?

Q 5. The overall net charge inside a cell is ____________.

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1. Phospholipids 2. Intrcellular junctions 3. Selectively permeable 4. because they have one end that is polar and another that is non-polar