Download Sections 3

Chapter 3 Study Guide
Section 3.1
1. What are the three parts of the cell theory?
2. Give two reasons why the cell theory is important.
3. Compare and contrast prokaryotic cells to eukaryotic cells. Discuss what they
have in common and what is different between them.
4. What is cytoplasm?
5. Where do you find organelles?
6. Which types of cells have no nucleus?
Section 3.2
Write either the function of the organelle or the name of each organelle. Draw a
sketch to help you remember it.
Organelle
nucleus
Function
Sketch
Helps in the production of
proteins and lipids
ribosomes
Golgi apparatus
Carries certain molecules
from place to place within a
cell
mitochondrion
vacuole
lysosome
centriole
Section 3.3
1. Which type of molecule forms a lipid bilayer within a cell
membrane?____________________________________
2. Phospholipids are molecules that contain which of the following?
a.
b.
c.
d.
phosphate
nonpolar “tails” and polar “heads”
form the lipid bilayer of the cell membrane
all of the above
3. The structure that regulates what enters and leaves the cell is called the
____________ _____________.
4. The cell membrane allows some, but not all, molecules to cross. What term
describes this property? _______________ ________________
Section 3.4
1. Define passive transport.
2. What are the types of passive transport we discussed in class?
3. What does semipermeable mean?
4. Which way do molecules move in passive transport?
5. Briefly describe the three types of solutions and how they affect the cell.
Section 3.5
1. What is active transport?
2. What is the energy source that powers active transport?
3. What does active transport use to move substances?
4. Define endocytosis and provide an example.
5. Define exocytosis.
Microscopes
1. Why do we need to use microscopes?
2. What are the three objective lenses (magnifications) you viewed the slides under?
3. How do you calculate total magnification?
4. Contrast magnification and resolution.
5. What type of microscope did you use in the lab?