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SCI 135 - Fourth Exam Fall 2016
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. The “plant problem” was faced by
_______ a. Ecologists explaining food chains b. Animals during a mass extinction
c. Scientists trying to explain the first Life d. The first life on land
e. Folks with very noisy rose bushes
2.
Glucose is
split into two pyruvate molecules during
_______ a. Krebs / Citric Acid Cycle b. Glycolysis c. Electron Transport Chain
d. Calvin Cycle e. The latest Penn & Teller magic special
3. A founder effect involves
_______ a. The first reaction in a pathway b. Migration of a small group
c. When the land was first colonized d. Electron carriers and water
e. A lost girl, what you say – “Found ‘er!”
4.
Which would be true of an ongoing
endergonic reaction?
________ a. It continually absorbs energy b. First it absorbs energy, then continuously releases
energy
c. It continually releases energy d. It could not be affected by enzymes
e. It has one of the weirder names in science
5.
Enzymes are affected by
changes in pH because
_______ a. The heat breaks the molecules apart b. Inhibitors affect the substrates
c. Activation energy is increased d. Ions can disrupt hydrogen bonds
e. They really don’t like each other
6. How is a
Calorie different from a calorie?
_______ a. They’re the same b. A Calorie measure Energy, a calorie measures heat
c. One Calorie is a thousand calories d. One calorie is a thousand Calories
e. Um, upper case and lower case-?
7.
Which process is a step in
both photosynthesis and aerobic respiration?
_______ a. Krebs Cycle b. Protein breakdown c. Calvin Cycle d. Electron transport chain
e. Both make steam come out of your ears when you read
about them
8. When protein molecules are
broken down
_______ a. All parts are used in respiratory pathways
b. All parts are removed as wastes
c. The carbon parts go into respiration and the nitrogen
parts become waste
d. The nitrogen parts go into respiration and the carbon
parts become waste
e. It’s really tough to find a garage that can fix them
9. Space dust
far between the stars can be analyzed because
of
_______ a. Pigments b. Reradiation c. Reflection d. Spacecraft collections e. Aliens
10.
In both major
energy processes, most of the ATP is made
in the
_______ a. Cycles b. Half-molecule process c. Use of the light d. Electron transport chain
e. Time when the workers are taking a Twitter break
11. According to
modern theory, evolution produces changes
by affecting the
_______ a. Individuals b. Gene pool c. Isolation types d. Ancestors e. Stuff it now affects
12. This term’s
definition is connected particularly to the chemistry of
humans -
_______ a. Active site b. Microbiome c. Inhibitors d. Vitamins e. Pizza addict
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. For oxygen debt - |
Where does
it happen? |
What
material
builds up? |
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2. In order to qualify as “living,” what two abilities did
the first living molecules have to have? |
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3. What happens in the process of end-product inhibition?
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4. What happens during niche isolation? Do not use the word
“niche” in the answer, define it.
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5. What do fungus and bacterial symbionts do for
land
plants?
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6. Two features of RNA that makes it a good candidate as
the earliest “living molecular cooperative.” |
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7. Explain what activation energy is.
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8. What are two different, general functions of carotenoids? |
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9.
What are two major challenges facing living things when
they were adapting to life on land? |
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10. Briefly explain what panspermia is.
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11. Why is chemosynthesis most likely to be the process of
the first producers?
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12. How do living things appear to
"break" the 2nd
Thermodynamics Law?
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13. What are coupled reactions?
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14. When working in enzyme systems, minerals are generally
called –
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15. How does hybrid vigor work?
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16. The two likely “staging area” environments that allowed
colonization of the land. |
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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.
1. Briefly describe the three different ways that
enzyme inhibition can work.
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2.
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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Movement onto Land
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Photosynthesis
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Cambrian
Explosion
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Primordial
Soup |
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Aerobic
Respiration |
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Molecular
Competition
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Prokaryote
Cells
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Multicelled
Systems
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3. 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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4. 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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5. What are four different ways that anaerobic organisms
impact humans? |
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6. 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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7. For mass extinctions - |
Common early
step - |
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Possible
cause - |
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Another possible
cause - |
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Another possible
cause - |
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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.
According to Einstein's E = mc2, what's the
general relationship between matter and energy? Three Points.
What is happening at the molecular level that requires the
testicles to be more-or-less outside of the body? Four Points.
For warm-bloodedness over cold-bloodedness, for Four Points
Each, give one metabolic:
Advantage:
Disadvantage:
Why is it called “denaturing”? Three Points.
The asteroid that wiped out the dinosaurs - where on Earth
did it hit? Three Points.
You weigh a potted plant. One month later, you weigh it
again and it has gained significant weight. Where exactly did the weight come
from? Three Points.
Plants both release oxygen and then use it in aerobic
respiration. Why is there so much “left over” for the world’s consumers? Three
Points.
When atoms absorb electromagnetic energy, what tends to
“jump”? Three Points.
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