Biology Chapter 7: Homework
Hmwrk 7-1
1. Who is Robert Hooke? What is the term he used to describe what he saw?
2. Write the three fundamental concepts of the Cell Theory?
3. What are the differences between a cell membrane and cell wall?
4. Why is a nucleus important?
5. Define prokaryotes and eukaryotes and state their differences.
Hmwrk 7-2
1. Draw the structure of the nucleus. Label it and define the structures.
2. What is the cytoskeletion? Define the structures that make it up.
3. Define Endoplasmic Reticulum. What is the difference between the rough and smooth
ER?
4. What organelles help plant and animal cells get their energy?
5. Why do some organelles have DNA? Why isn’t this DNA in the nucleus?
Hmwrk 7-3
1. What is a lipid bilayer, where is it and what is its importance?
2. How does diffusion work?
3. What is the difference between diffusion and osmosis?
4. Define isotonic, hypotonic and hypertonic solutions.
5. If molecules cannot easily cross the cell membrane, what method do they use to enter
the cell (i.e. what kinds of transport don’t require energy, but require help)?
6. What is active transport? Define endocytosis, phagocytosis and exocytosis in your own
words.
Hmwrk 7-4
1. How do some cells stretch the concept of unicellularity?
2. Define cell specialization. Which type of cells exhibit cell specialization?
3. Describe the levels of organization.
Biology Chapter 7: Study Guide
1
Section 1
 Definitions
Cell
Nucleus
Prokaryote
Cell theory
Eukaryote
 Scientists and their work
Robert Hooke
Matthias Schleiden
Rudolf Virchow
Anton van Leeuwonhoek
Theodor Schwann
 Know the three fundamental principles of the Cell Theory
 Differences between eukaryotes and prokaryotes
 Examples of prokaryotes and eukaryotes
 Know the two structures that all cells have
Section 2
 Definitions
Organelle
Nucleolus
Vacuole
Cytoplasm
Ribosome
Mitochondria
Nuclear envelope
ER
Chloroplast
Chromatin
Golgi apparatus
Cytoskeleton
Chromosome
Lysosome
Centriole
 Be able to label a cell diagram (plant and animal)
 Know which organelles are in plants and animals
 Know structure and functions of organelles
 Know who Lynn Margulis is and what she suggested about organelle DNA
 Know the components of all organelles
Section 3
 Definitions
Cell membrane
Osmosis
Endocytosis
Cell wall
Isotonic
Phagocytosis
Lipid bilayer
Hypertonic
Pinocytosis
Concentration
Hypotonic
Exocytosis
Diffusion
Facilitated diffusion
Equilibrium
Active transport
 Be able to label the components of a cell membrane
 Know what semi-permeable means
 Be able to determine which solution has a higher concentration
 Be able to label hypertonic, isotonic, and hypotonic solutions
 Be able to determine what will happen to a cell in hypertonic, isotonic and
hypotonic solutions
 Be able to determine how equilibrium will be established
 Know the differences between diffusion, osmosis, facilitated diffusion and active
transport
 Be able to describe the process of exocytosis and endocytosis
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Section 4
 Definitions
Cell specialization
Organ
Tissue
Organ system
 Know the difference between unicellular and multicellular organisms
 Be able to describe at least one example of cell specialization in animals and
plants
 Know the levels of organization
 Be able to place examples within the levels
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