13 Jun It takes an input of energy to create starch from glucose
Question
1.It has been hypothesized that, if the sun disappeared, all life would end. Other
than the obvious
drop in temperature, why would humans probably die if the sun suddenly
stopped shining?
Outline the flow of energy that takes place ,including energy transformations
2.It takes an input of energy to create starch from glucose; however, energy
is released when glucose is created from starch. Why is this case? Can
you apply a specific law of thermodynamics to explain this ?
3.Would ATP be the energy currency of the cell if the phosphate groups
the cell contains were not
charged? Why or why ?
4.Phosphofructokinase is an enzyme involved in glycolysis, which is a
metabolic pathway involved
in ATP production. It can be allosterically regulated by both ATP and
ADP. Why is regulating the
activity of this enzyme important? Predict what will happen to the rate of
reaction when ATP
levels in the cell are high, and predict what will happen when the levels
of ADP in the cell are high.
5.A woman suffering from severe dehydration goes into the hospital. The
doctor tells the woman
that her blood has far too much solute in it and not enough water.
Explain how this condition
could affect the cells of her body and why.
6.An accident victim lost a lot of blood and was rushed to the emergency
room. In the emergency
room, the first thing the doctors did was replace lost fluids by giving an
IV of pure water. But this caused the patient to die. Propose a reason
why the patient died.
7.What are two major differences between active transport and passive
transport? Please give a
specific example of each that occurs within a eukaryotic cell.
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