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Winters 1
Academic Biology
Glucose metabolism questions
1. What is the primary source of energy for the cell?
a. The primary source of energy for the cell is ATP.
2. How does the cell produce a continual supply of energy?
a. The cell produces a continual supply of energy by
the process of cellular respiration.
3. What places in the cell does cellular respiration occur?
a. Cellular respiration occurs in the cytoplasm and the
mitochondria.
4. What is the first phase of respiration called and where
does it occur?
a. The first phase is glycolysis and it occurs in the
cytoplasm.
5. Describe the products made in glycolysis.
a. The products made in glycolysis are NADH,
pyruvate acid, and ATP molecules, these all aid to
produce energy.
6. What two pathways does pyruvate take after glycolysis?
What conditions allow it to happen each way?
a. When oxygen is present cellular respiration occurs.
b. When oxygen isn’t present fermentation occurs.
7. If oxygen is available, discuss the changes in pyruvate
and the products created. What is this process called?
a. When oxygen is available, metabolism is eventually
created through the process of the Krebs Cycle.
Two Carbon molecules are created along with two
NADH molecules.
Winters 2
8. Discuss the events in the electron transport chain.
a. In the electron transport chain, they use their
energy to pump protons into their inner membrane
space, then the protons flow through the enzyme
ATP synthrose, which releases the energy.
9. How many ATP are produced from the complete
breakdown of glucose in oxygen?
a. A total of 36 ATP are produced in the complete
breakdown of glucose in oxygen.
10.
What are the two electron carriers called?
a. The two electron carriers are called NADH and
FADH2
11.
How is fermentation similar to glycolysis?
a. Fermentation is similar to glycolysis because they
both inadvertently lead to the production of energy.
12.
How is fermentation different from glycolysis?
a. Fermentation does not use oxygen to produce
energy, while glycolysis does.
13.
Give 3 example of fermentation.
a. Three examples of fermentation are:
i. Ethanol fermentation – leads to methanol
ii. Lactic Acid fermentation – leads to lactose into
lactic acid – yogurt
iii. Alcohol fermentation – leads to alcohol
14.
How are the photosynthesis and respiration
equations related?
a. They both use Carbon Dioxide and water, they also
both share the equation C6H12O6 and 6O2, which
in respiration is glucose (sugar) and photosynthesis
sugar.
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15.
Why are fats such a good source of energy? (Note:
this needs to be related to ATP)
a. Fats are a good source of energy because there are
more calories in them, which makes ATP
productivity increase, and ATP is energy.