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SCI 135 - Second Exam Spring 2018
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. Around here,
a lake’s surface freezes when
_______ a. The entire lake is 4o C
b. The entire lake is at 0o C c. The
top layer only is at minus 4o C
d. The bottom layer only is at minus 4o C
e. You want to go skating but you have to work
2. In general,
if you compare an element’s common ion to its uncharged
atom form, the ion should be
_______ a. More likely to be radioactive
b. Chemically more stable c. Less
likely to be radioactive
d. Chemically less stable
e. Available in more styles and colors
3. The
current basic definition of a species
is based upon
_______ a. Physical resemblance
b. Genetic resemblance c.
Reproductive behavior
d. Offspring fertility e.
Whichever of the twelve possibilities the dart hit today
4. Which type of
molecules have many different functions because of their limitless
ability to be different shapes?
_______ a. Proteins
b. Nucleic Acids c.
Carbohydrates d. Lipids
e. Silly Putty
5.
Sectioning is done with
_______ a. DNA codes
b. Protein structure c. Microscope
specimens d. Electron levels
e. My brain – my happy section, and this one
6. Which is a
base bonding combination in
nucleic acids?
_______ a. Glucose - Glycerol
b. Thymine - Cytosine c. Adenine -
Guanine
d. Adenine - Uracil e. “Base bonding”
sounds like we’re sticking statues together
7. Two different
isotopes of the same element have different
numbers of
_______ a. Protons
b. Electrons c. Neutrons
d. Nuclei e. Zip codes
8. The
pH of digestive juices in the intestine is
between 7.5 and 8.5. Compared with a
neutral pH, the concentration of H+
ions should be
__________ a. Higher
b. Lower c. Equal
d. There's no way to tell
e. I guess I shouldn’t have skipped this one in the book
9.
Saturated for a molecule refers to
_______ a. Attached water
b. Bonds inside c. Energy carried
d. Overall structure
e. How drunk it got last night
10. Which term
relates to how clearly an imaging system can focus?
_______ a. Resolution
b. Magnification c.
Intrinsicness d. Clarity
e. Focusabubbliness
11.
Water is often called the universal
_______ a. Solution
b. Solute c. Solvent
d. Reactor e. Wetter
12. Which is
not a use for lipids in living
things?
_______ a. Storing energy
b. Moving things c. Hormones
d. Water barriers
e. Making students remember answers
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. What are two
features that a water molecule
must have in order for it to evaporate? |
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2. Compounds with ionic
bonds very rarely have any function in living
systems. Why is that?
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3. Give a definition of the term
allele.
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| 4. What is the function
of each end of an
antibody molecule? |
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| 5. Name two different types
of organic molecules that are polymers. |
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| 6. Give
two sets of
differences between the two types of CHROMOSOMES - |
| PROKARYOTE |
EUKARYOTE |
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7. What is a hydration shell?
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| 8. What are two
different ways that electron
microscopes are different from
light microscopes? |
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9. Label the following chemical reaction
with the general terms for each part – |
A +
B
x >
C
__________
___________
______________
_____________ |
10. Why exactly does carbon
dating become unreliable after about
60,000 years?
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| 11. When classification scientists
want to change a group’s classification - |
WHAT
ARE
THEY ALLOWED
TO DO? |
WHAT
ARE THEY
NOT ALLOWED
TO DO? |
12. For a lipid molecule,
give the components, including how many of each.
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13. Put the following groups in order from the largest to
the smallest: Class, Family, Genus, Kingdom, Order, Phylum, Species, Superclass,
Subfamily. |
| 1 |
4 |
7 |
| 2 |
5 |
8 |
| 3 |
6 |
9 |
| 14. For each, give an example of the
process being used in our bodies - |
DEHYDRATION
SYNTHESIS
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HYDROLYSIS
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| 15. What are two different types
of protein-based communication molecules? |
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| 16. What’s the chemistry meaning
of these two word endings? |
| -ose |
-ase |
| 17. What are two different things
found in non-coding DNA that are still some
type of codes? |
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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. For four of the six basic Kingdoms of Life, give the
name of the Kingdom and enough features to clearly set that Kingdom's members
apart from those of the other five. |
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2. Name and give a
brief description for the four levels of
protein structure. |
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3.
Give four rules from
the Cell Theory. |
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| 4. For
carbohydrates - |
Process that makes
most of them - |
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Two main
forms - |
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Organisms that
make them - |
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5. Using the numbers of bonds as a
guide, fill in the symbols for either Carbon,
Hydrogen, Nitrogen, or Oxygen. |
Can't recreate
the original hand drawing.
O O O
O O O O
O O O
O O |
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6. All for the most
common isotope –
How many
protons?
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40.08
Ca
Calcium
# 20
Column
2 |
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How many
neutrons?
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Typical
ion
form?
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How many
electrons?
(Uncharged form)
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7. Microscopes can be split into two main groups based upon either
listed feature. For each feature, name the
groups. |
Nature of the
Imaging Beam |
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Interaction of Beam
with specimen |
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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.
How can the emission of radiation cause a change of
element? Three Points.
The right-hand column on the test’s periodic table is
labeled “0." According to our rules, what should the label be (Three Points),
and why does it have a zero on it (Three Points)?
What body functions actually make use of oxygen radicals?
Three Points Each.
Why is there so much nitrogen in the atmosphere? Three
Points.
What property of water makes fiber a laxative? Three
Points.
What is the molecule ATP used for? Three Points.
Why do plants make what we considered digestible starches?
Three Points.
What system is supposed to have proteins with low
specificity? Three Points.
What type of molecule has been found fairly recently to
have many many different varieties doing lots of jobs? Three Points.
Mr. McDarby put out a class email that related to this
exam. What was it about specifically? Three Points.
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