Chapters 2-5
Supplemental Instruction
Iowa State University / Leader: / Chelsea
Course: / Bio 212(1)
Instructor: / Coffman/Howell/Addis
Date: / 1/30/12
Chapter 2:
1. What are the three main components of an atom? How big are they relative to the atom?
2. How big are atoms, molecules, macromolecules and organelles in relation to each other?
3. What is an isotope and how does it vary from its sister element?
4. Draw the energy shell diagram for Nitrogen.
5. What is a covalent bond and how is this important for atoms?
6. If I said that electrons were not always shared evenly between atoms, what word is this describing? Why is this important to know?
7. Water is a great solvent, why is this? What properties does water posses that make it so good? How types of bonds can it produce?
8. When Na+ and Cl – bind together, what type of bond is being made?
9. Can you explain why NaOH is a strong base? What determines the pH of a solution?
10. What is hydrolysis and how is it important in any given reaction?
Chapter 3:
1. Can you distinguish a polar and non-polar molecule? Which is polar, NH3 or BF3?
2. What are the differences in carbohydrates, lipids, proteins and nucleic acids? Give examples of each. Ex: Cholesterol is a steroid, which is a type of what?
3. What is the main difference we see between lipids and phospholipids?
4. What is the hierarchical structure for proteins?
5. Can you name the four bases in DNA? How is DNA different than RNA?
Chapter 4:
1. Diagram a prokaryotic cell, an animal cell and a plant cell. How are they different?
2. Why is compartmentalization important?
3. Recall the differences in the human skin cell verse the human nerve cell, not only are they different in appearance, but how are their functions different? Similar?
4. Do you know what metabolism is, what are the differences with catabolic and anabolic?
5. Motor proteins use ATP as a source of energy to promote various types of movement, can you give me an example?
6. Draw the process a protein would take to exit the cell, what about to the nucleus? How does the protein know where to go?
7. What does semiautonomous mean? Which organelles fall under this category?
Chapter 5:
1. Draw a phospholipid bilayer, including carbohydrates and proteins.
2. Describe how size and saturation deal with the fluidity of a membrane, especially with changes in temperature.
3. What are the three types of membrane transport? List which types of molecules use each? Does concentration matter?
4. What is osmosis and how does it relate to membrane permeability?
5. Differentiate between antiport, symport and uniport.
6. What is endocytosis, how is it different than exocytosis?