chapter 2 review: cell and cell membrane

Cell Organelles
vocabulary: eukaryotic, prokaryotic, nucleus (chromosome, nucleolus, nuclear pore, nuclear
envelope), endoplasmic reticulum (smooth, rough), endomembrane system, vesicles, Golgi
apparatus, lysosomes, peroxisomes, vacuole, chloroplast, mitochondria, cell wall, cytoskeleton,
cilia, flagella
Cell membranes
vocabulary: phospholipid bilayer, glycoproteins, integral proteins, peripheral proteins, semipermeable, channel protein, carrier protein,
Cell membrane transport
vocabulary: solution, hypotonic, hypertonic, isotonic,passive transport, concentration gradient,
diffusion, osmosis, facilitated diffusion,
vocabulary: active transport, membrane-assisted transport, endocytosis, exocytosis,
phagocytosis, pinocytosis, receptor-mediated endocytosis
1. Describe the function of all the major cell organelles. Be able to label both an animal and
a plant cell.
2. Compare the roles and types of organelles in a plant and an animal cell.
3. Chefs often place salad greens in water to make the vegetables crispy. What organelle is
principally responsible for the increase in plant cell rigidity? Is this an example of active or
passive transport? What type of transport is it? Explain.
4. Why do phospholipids placed in water form bilayers?
5. The cell membrane is often called the “fluid mosaic model”. Explain.
6. Which forms of cell transport require a net input of energy? Which do not?
7. Some molecules require active transport while others can use some form of diffusion.
Create a chart to show which molecules use which form of transport.
8. Explain why some forms of transport require energy.
9. Some forms of transport use proteins while others don’t. Explain the different types of
proteins that are involved in membrane transport.
10.Draw a diagram of membrane-assisted transport, from the synthesis of a peptide-based
hormone on the rough endoplasmic reticulum to its release at the cell surface.
11.Reverse question (9) to show the endocytosis of an enzyme co-factor that is going to be
used by the cell’s nucleus.
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