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Cards In This Set
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 The curve above shows the activity (# reactions catalyzed per second) for a human enzyme. If a scientist wanted to minimize the activity of this enzyme while purifying it, while still maintaining a folded, functional enzyme at the end of the process, which situation should she choose? |
Purify the enzyme in a cold room at 10 degrees
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An anabolic metabolic pathway is one that stores matter in complex biomolecules. This statement is:
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True
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During glycolysis 2 carbons from glucose are released as CO2 . This statement is
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False
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During the Krebs cycle (citric acid cycle) 4 carbons from glucose are released as CO2 . This statement is:
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True
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 “E” = Enzyme and A,B,C, D, and F are chemical species. If you add an allosteric activator of E1 to the cell, what will initially happen? |
The E1 quaternary structure will change and the enzyme will become more active
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Nitrogen is an abundant element in biological macromolecules like ______________.
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Proteins and Nucleic acids
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 Curves A and B represent the same chemical reaction under two different conditions. Curve A represents an ________ reaction that is __________ by an enzyme. |
Exergonic; uncatalyzed
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A chemical reaction has ΔG = -10 kJ/mol and EA = 25 kJ/mol. In the presence of an enzyme these values would become ΔG _____ and EA _______.
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Still -10 kJ/mol; less than 25 kJ/mol
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 “E” = Enzyme and A,B,C, D, and F are chemical species. If you add a competitive inhibitor of enzyme E1 to a cell, which species would increase in concentration in the cell? |
Species A and B
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During the turnover of an enzyme, all of the following events occur EXCEPT:
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The products are bound so tight that the enzyme is unable to release them
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In the presence of an enzyme a chemical reaction has a ΔG of -13 kJ/mol and a EA of +5 kJ/mol. This reaction is endergonic. This statement is:
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False
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An electron far away from the nucleus will ______ potential energy and _______ kinetic energy as it moves away from the nucleus.
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Gain; lose
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During the process of glycolysis, a net 2 ATP are created. Where do these ATP come from?
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Substrate-level phosphorylation of ADP
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In the presence of an enzyme a chemical reaction has a ΔG of -13 kJ/mol and a EA of +5 kJ/mol. This reaction is non-spontaneous. This statement is:
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False
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Fats have the highest energy density (calories per gram) of all nutritional sources. This is because they are rich in _____________ bonds
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C - H
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