Name: Date: Per.
Chapter 5: Organic Compounds Questions pt. 1
1. What are the four classes of organic compounds/large biological molecules that make up living things? Give an
example of a specific compound in each of the four classes.
Class of organic compound/Macromolecule Example:
2. Explain the relationship between condensation/dehydration reactions and hydrolysis.
3. a) What type of macromolecule is glycogen and starch?
b) How are they the same and how are they different?
4. Distinguish between saturated fats, monounsaturated fats, and polyunsaturated fats. Give an example of each.
5. List one piece of evidence showing that proteins are a very important macromolecule.
6. a) What is the function of nucleic acids?
b) What determines the initial structure of a polypeptide (protein)?
7. What type of macromolecule are glucose and ribose? IB: Be able to draw the ring structure of both.
1) Why are lipids grouped together?
2) In the space below, list AND sketch (include labels) the separate components of a FAT.
3) What is the NAME of the bond that links a fatty acid to a glycerol molecule? Which two functional groups are
involved in the formation of this bond?
4) a) Explain why unsaturated fats are generally liquids at room temperature.
b) What is meant by “hydrogenated” vegetable oils? Why is this process done?
5) What is “atherosclerosis”?
What causes it?
What is the result of this condition on an individual’s blood flow?
6) In the space below, sketch and label a simplified diagram of a phospholipid symbol.
7) a) Why is it that phospholipids show ambivalent behavior towards water?
b) Explain how phospholipids are arranged at the surface of a cell membrane. You may use a labeled sketch if
8) a) List two reasons why we need cholesterol in our bodies.
b) Why is too much cholesterol in our diet bad for our health?
9) What are the subunits (building blocks) of nucleic acids called?
10) Fill in the blanks below illustrating the information flow in a cell:
11)What are the 3 parts of a nucleotide? Sketch the general structure of a nucleotide. Use the symbols on the
12) Distinguish between purines and pyrimidines (how are they different?) and list 2 purines and 3 pyrimidines.
13) Describe at least 2 ways in which RNA differs from DNA.
14) Why is the base sequence for nucleic acids so important?
15) Why can we use DNA and proteins as tape measures of evolution?