Essays Chapters 6 & 7
1. Using the diagram provided (from book pgs. 101-102),
a. label ALL parts of the animal cell or plant cell.
b. list the parts of the cell and give the function of that structure.
c. differentiate between the endomembrane system and other organelles within the cytoplasm (be able
to explain the sequence of events as they occur within the endomembrane system).
2. Explain the fluid mosaic model of the cell membrane. Be sure to identify and explain the two
experiments that helped prove that the membrane is fluid and a mosaic.
3. What are the six major types of proteins found in the cell membrane? Explain the purpose of each
protein and what affect it has upon the cell. Give an example for each protein type.
4. Explain how ALL materials get from the outside of the cell into the cell. What does it mean to be
selectively permeable? Be sure to explain all passive and active transport systems.
5. Compare and contrast a prokaryotic cell and a eukaryotic cell in terms of cell structures and functions.
You may use a T-chart for this one.
6. Describe in detail how the sodium-potassium pump works. What type of cell needs this system in order
to function? What is the purpose of having such a system?
7.
As the sucrose solution increases in molarity, the rate of sucrose moving across the membrane increases
but it is not increasing in a linear proportion. Use the graph above to explain why this is happening.
Why does it the curve have this type of shape?
Vocabulary:
Ch. 6
Scanning electron microscope, transmission electron microscope, prokaryote, eukaryote, cytoplasm,
ALL terms on pages 100 and 101, plasmodesmata, tight junction, gap junction, desmosome
Ch. 7
Selective permeability, amphipathic molecule, fluid mosaic model, integral versus peripheral proteins,
glycolipid, glycoprotein, diffusion, concentration gradient, passive transport, active transport, facilitated
diffusion, osmosis, isotonic, hypertonic, hypotonic, exocytosis, endocytosis, phagocytosis, pinocytosis