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SC 135 - Second Exam Spring 2010
Links connect to relevant
parts of the online book.
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.
Which should be found in eukaryotes but not in
prokaryotes?
_______ a. DNA
b. Maximum possible size
c. Chromosomes with 2 ends
d. Loop-shaped chromosomes
e. But, but...the answer I want isn't here!
2.
Sectioning is a type of
_______ a. Specimen preparation
b. Chemical reaction
c. Cell division
d. Molecule labeling system
e. Auditorium design detail
3.
Water is most dense at the Celsius temperature of
_______ a. 0o
b. 100o
c. 4o
d. -10o
e. Well, I'm feeling pretty dense - what's the temp in here?
4.
Which is most likely to be hydrophobic?
_______ a. Small ion
b. Large ion
c. Carbohydrate
d. Lipid
e. Audience for Jaws
5. Actin and myosin are
_______ a. Found in DNA
b. Important in water chemistry
c. Found in RNA
d. Muscle proteins
e. In the new Dancing with the Stars
6.
The basic process of respiration always
_______ a. Involves oxygen
b. Moves chemical energy around
c. Produces proteins
d. Does all of the above
e. Is better than the alternative
7.
When a glass is overfilled with water, what's happening
to the molecules in the "bump" of water above the rim that sustains the
bump?
_______ a. Cohesion
b. Evaporation
c. Adhesion
d. Insulation
e. Bumpilation
8.
The energy that runs through food chains came into the
chain as
_______ a. Sugar
b. Starch
c. Light d.
Enzymes
e. Super-charged foody stuff
9.
A microscope's resolution would be determined by
_______ a. How big an image can be made
b. How clear a focus you can get
c. How many specimens it can process per hour
d. All of the above
e. An internet poll
10. Which of these is chemically organic?
_______ a. H2O
b. CH4
c. CO2
d. CN e.
Manure oxide
11.
Two chromosomes are homologous because they
_______ a. Are in the same type of cell
b. Are exact copies of each other
c. Carry the same types of genes
d. Are bound to the same carbohydrates
e. Look, I'm not interested in their private lives
12.
In which are objects likely to look three-dimensional?
_______ a. Scanning microscope
b. High-resolution microscope c.
Low-resolution microscope d.
Transmission microscope
e. Um, Avatar-?
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.
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1.
Why would a pathway product require information from
more than one gene? |
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2. What are two different types of organic
molecules that are polymers? |
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| Bonus - give the
component types for each above (Optional, and does not count as a
selected question). |
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3. What happens to the participants in a
redox reaction? |
| REDUCED - |
OXIDIZED - |
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4. What are
two clear advantages that light microscopes have over
electron microscopes? |
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5. What are
the two basic components in a lipid molecule? |
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6. Briefly
give the most popular explanation for why active cells seem to have a
maximum allowable size. |
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7. What is a hydration shell? |
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8. What are
two of the "rules" from the Cell Theory? |
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9. Plants produce starches for different
reasons. Connect each to the stability of the bonds. |
VERY
STABLE
BOND - |
LESS
STABLE
BOND - |
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10. What two different classes of organic
molecules can act as catalysts, speeding up chemical reactions? |
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11. Describe the basic process of hydrolysis. |
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12. What types of molecules are named with these
endings? |
-ase
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-ose |
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13. Ignore the
specifics (don't name the actual molecules) - label with the general
terms applied to any chemical reaction - |
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CO2
+ H2O
light
> C6H12O6
+ O2
--------------- ---------------
-----------------
----------------
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14. What happens at the active site of an
enzyme? |
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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.
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1. What are
four different types of proteins that are involved in some form
of communication? |
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2. For the pH scale shown below, fill in the
proper blanks - |
-------------------------------------------------------------------------------------------------
2 3 4 5 6 7
8 9 10 11 12
13Range
Name _________________ ________________
____________________
Active
Ion
_______________
____________________
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3. Using the numbers of bonds as a guide, fill
in the symbols for either Carbon, Hydrogen, Nitrogen, or Oxygen. |
| This would be boxes (the atoms
/ where the symbols go) connected by lines (the bonds), as shown in
class. |
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4. Give the name and a description
of the three types of chemical bonds: |
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5. Pick
any two - define the terms. |
Allele
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Codon
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Gene
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6. Name and
give a description of the four levels of protein structure. |
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7. What are
three different biological uses for lipids? |
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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.
Why do our local lakes "turn over" late in the year? Three Points.
What often happens to allow certain toxins to accumulate in the body? Three
Points.
What is a synapse? Three Points.
What is an antigen? Three Points.
What sort of NON-organic materials often are used commercially as catalysts?
Three Points.
Which kind of molecule has had many new types and unsuspected functions
discovered in recent years? Three Points.
Where did the name "Junk DNA" come from? Three Points.
When microscopes were being developed, what problem with the lenses had to be
solved? Three Points.
Why do light microscopes have a fairly low resolution limit? Three Points.
Most prokaryotes can be referred to accurately with what well-known term? Three
Points.
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