SC 135 - 2nd Exam Spring 2004
MULTIPLE CHOICE.
On the line to the left, place the letter of the choice that
best answers the question.
Three Points Each. NOTE: "e" answers are never the correct answer.
1. When water
ionizes, it goes from a form where all of the atoms are uncharged to a
release of H+ and OH-, meaning
_______ a. The H reduces and the OH oxidizes
b. The OH reduces and the H oxidizes
c. Both reduce
d. Both oxidize
e. I'm never drinking water again.
2.
Double-blind studies were begun to remove the influence of
_______ a. Doctors
b. Observers
c. Placebo effect
d. Reviewers
e. Exam takers - don't you feel special?
3. The
first row of the periodic table has how many elements?
_______ a. 24
b. 12
c. 8
d. 2
e. As many as it needs to
4. Which
should contain amino acids?
_______ a. Cellulose
b. Unused cooking oil
c. Kinase
d. Any type of acid
e. Is that Italian?
5. An atom
can be made unstable and radioactive by a change in its
_______ a. Electrons
b. Protons
c. Neutrons
d. Chemistry
e. Dating situation
6. A material
with a pH of 11 is
_______ a. Twice as acidic as one with a pH of 10
b. Twice as basic as one with a pH of 10
c. Ten times as acidic as one with a pH of 10
d. Ten times as basic as one with a pH of 10
e. Somehow different from one with a pH of 10
7. Which is
usually considered a "hard" science?
_______ a. Biology
b. Psychology
c. Sociology
d. Physics
e. They're all hard to me
8. The
organization of periodic table columns is based upon
_______ a. Protons
b. Neutrons
c. Electrons
d. Molecules
e. Eeeny, meeny, miney, moe...
9. Lipids
are generally
_______ a. Basic
b. Hydrophilic
c. Hydrophobic
d. All of these
e. In a bad mood
10.
Steroid hormones are in the same molecule class with
_______ a. Corn starch
b. Olive oil
c. Egg white protein
d. Milk sugar
e. The other pumped-up molecules
11. More than
one control test is usually an indicator of
_______ a. The null hypothesis
b. Bad interpretations
c. New hypotheses
d. Confounding factors.
e. Really good funding
SHORT ANSWER.
Answer any eight of the following questions for 4 Points Each.
Note: if you answer more than eight, only the first eight will be corrected.
You can get partial credit on these answers.
| 1. Briefly explain what a hydration shell is. |
|
|
| 2. What are two different types of uses for proteins? | |
|
|
|
| 3. What are two features of viruses that make them difficult to put in the "living" category? | |
|
|
|
| 4. What are the functions of the two ends of an antibody molecule? | |
|
|
|
| 5. What are the components or "pieces" of lipid molecules? | |
|
|
|
| 6. What particular feature makes a study "pure science"? |
|
|
| 7. Briefly explain why the evaporation of a liquid is a cooling process. |
|
|
| 8. What is the newest definition of organic chemistry? |
|
|
| 9. Which human body system or organ is pretty much all in the hydrolysis business? |
|
|
| 10. What happens at an enzyme's active site? |
|
|
| 11. In experiments, what is an artifact? |
|
|
| 12. Give one way or approach in the design of an experiment that can reduce the effects of pure chance on the results. |
|
|
| 13. What is the basic structure of an amino acid? |
|
|
| 14. What is the definition of a polymer? |
|
|
LONG ANSWER.
Answer any four of the following questions for Eight Points
Each.
Note: if you answer more than four, only the first four will be corrected.
You can get partial credit on these answers.
| 1. For the two different types of experimental models - | ||
| NAME the type | One ADVANTAGE | One DISADVANTAGE |
|
|
||
|
|
||
| 2. Give the name and a brief description/ definition of the four levels of protein structure. | |
|
|
|
|
|
|
|
|
|
|
|
|
| 3. Using the numbers of bonds as a guide, fill in the symbols for either Carbon, Hydrogen, Nitrogen, or Oxygen. |
| Drawing not reproducible,
but same type as was used in class.
|
| 4. | |
|
19.9984 |
How many protons? |
| How many neutrons? |
|
| How many electrons?(Radical form) |
Typical ion form? |
| 5. For the two basic types of carbohydrates - | |
| TYPES | ONE BASIC USE |
|
|
|
|
|
|
| 6. For two different properties of water - | |
| DESCRIBE (a simple one-word term is NOT enough!). | EXPLAIN how this property is critically important to living things. |
|
|
|
|
|
|
| 7. For two different types of molecular bonds - | |
| NAME the bond type | DESCRIBE how such a bond is formed |
|
|
|
|
|
|
Link to Answer Key
BONUS QUESTIONS.
Answer as many as you are able. Wrong answers will not result
in points being lost from the main exam. You can get partial credit on these
answers.
In what ways can peer review hold back possible advances in science? Three
Points each.
What artifact led to folks throwing away their cookware? Three Points.
What confounding factor affected the results of Margaret Mead's anthropology
study of South Pacific cultures? Three Points.
For Three Points each, why is it so hard to come up with drugs that will affect
viruses? Be fairly specific.
Give a reason why there is so much N2 gas in the atmosphere. Three Points.
What causes local ponds to "turn over"? Three Points.
Where exactly do the pH scale numbers come from? Three Points.
For Three Points each, what atomic-level materials have been connected to aging
damage?
What odd feature do almost all of the amino acids in living things have in
common? Three Points.
How is the sequence of a protein "read" - which is the starting end, which the
tail end? Three Points.