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SCI 135 - Fourth 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.
Oxygen debt happens in
_______ a. Plant cells when there’s no light
b. Muscle cells that need more oxygen than they can get
c. Lung cells, in order to move oxygen
d. Water when oxygen levels drop
e. Future banks - you won’t want to default on their loans!
2. Most of the
ATP output of aerobic respiration happens in
_______ a. The electron transport chain
b. Glycolysis c. Krebs cycle
d. Cellulysis
e. A little ATP machine
3. The
“Snowball Period” changed life on Earth by
_______ a. Bringing in water
b. Concentrating primordial soup c.
Increasing competition
d. Stopping chemosynthesis
e. Making it all about winter funtime
4.
Modern versions of Darwin’s evolution theories see changes
over time in
_______ a. Species features
b. Individual fitness c. Kingdoms
d. Gene pools
e. The level of craziness in the “counter” theories
5.
Vitamins are a type of
_______ a. Mineral
b. Cofactor c. Coenzyme
d. Carbohydrate e. Health scam
6. The
Laws of Thermodynamics apply to
_______ a. Nutritional content of food
b. Movement of energy in a food chain
c. Enzyme efficiency
d. Photosynthesis in low light
e. The hotness of your gorgeousity, Baby! (is that appropriate?)
7. Living things
most likely colonized the land from
_______ a. Swamps and forests
b. Beaches and islands c. Swamps and
islands
d. Tidal pools and shallow fresh water
d. Their waterfront properties
8. The famous
“plant problem” involves
_______ a. Food chains
b. Environmental toxins c. Beginnings
of Life d. The nature of
sunlight
e. They’re going to rise up and choke us in our sleep
9. Two
nutrients plants need, but are not
the main input of photosynthesis:
_______ a. Nitrates & Phosphates
b. Water & phosphates c. Nitrate &
carbon dioxide
d. Water & carbon dioxide
e. Pizza & beer
10. In
chemosynthesis, the environmental energy
type is usually
_______ a. Light
b. Lightning c. Ultraviolet
d. Heat e. Red Bull
11.
Reradiation can happen in materials when
_______ a. Electrons jump outward
b. Electrons jump back inward c. They
break down
d. They combine chemically e. They
don’t like the radiation they got for Christmas
12. Which works
by lowering activation energy?
_______ a. Photosynthesis
b. Respiration c. Enzymes
d. Entropy
e. I’m just lowering expectations for my mark...
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. Show the basic overall process of
aerobic respiration. Include all reactants,
products, and energy uses. |
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2. In general, what are
coupled in coupled reactions?
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| 3. Show the basic overall process of
photosynthesis. Include all reactants,
products, and energy uses. |
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| 4. Give the normal progression
(very generalized) of organism types in a food chain. |
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| 5. When ATP is
broken down for energy, what are the
two products? |
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6. What are the two major
uses plants have for glucose? |
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| 7. RNA might
have led to our “modern” cell chemistry because it can do some things
like proteins and DNA... |
Like
proteins,
it can -
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Like
DNA,
it can -
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8. Where, exactly, do nitrogenous wastes
come from?
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| 9. A mutation probably
combined which two systems in the evolution of
photosynthesis? |
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| 10. Two different basic
functions plants have for carotenoids - |
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| 11. What are two rules
that Hardy-Weinberg applies to an allele
that keep it around in a population? |
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| 12. What are two different
possible causes of
mass extinctions? |
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14. Why, exactly, can
a change in pH affect how well enzymes behave?
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| 15. Two features the very
first “living systems” had to have: |
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| 16. Two features the first
“modern” living systems eventually had to have: |
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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 each step in the theoretical development of Life on
Earth, put them in chronological order,
from earliest
to latest, 1 - 8 in the boxes to the left. |
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Molecular
Competition
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Aerobic
Respiration
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Primordial
Soup
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Prokaryote
Cells |
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Cambrian
Explosion
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Snowball
Period
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Photosynthesis
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2. Describe (don’t just give
a term) four different types
of reproductive isolation. |
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3. At the points labeled with the stars, attach the
appropriate labels from this list:
Violet. X-Ray. InfraRed. Red. Blue. Ultraviolet. |
High Frequency \ Visible Range / Low Frequency
* * / * * * \ *
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4. What are four different ways that
anaerobic organisms
impact humans? |
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5. For the main photosynthesis reactions: |
| Name |
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Exact Materials or Energy Used
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Exact Materials Produced
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6. Briefly describe the three different ways that
enzyme
inhibitors can work.
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7. Answer the questions on the graph for the
relationship
between enzyme activity and temperature. A. Why is the rate dropping off here? B. What is
this point called? C. Why is the rate
rising here? |
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*
*
*
*
*
Reaction
C *
* A
Rate
*
*
*
*
*
*
*
*
*****
******
B
Temperature ---->
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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 would mass extinctions be associated with bottleneck
effects? Three Points.
Irreversible enzyme inhibition is often produced by what
sorts of secretions? Three Points.
How does the sweetener Splenda relate to the enzyme
specificity? Three Points.
When geologists dove to investigate hydrothermal vents,
what discovery there took them totally by surprise? Three Points.
What do animals that produce uric acid have in common that
connects to that particular feature? Three Points.
What sorts of atoms (which element) are critical in moving
electrons around? Three Points.
What type of abnormal cells can go into oxygen debt? Three
Points.
What was the first indication that there had been a
Snowball Period? Three Points.
Why are brightly-colored fish not brightly colored where
they normally live? Three Points.
What color flowers can a typical bee not pick out from the
background? Three Points.
What mineral can greatly increase algae growth in the open
ocean? Three Points.
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