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BIOLOGY 189 EXAM 3 CSN QUESTIONS WITH 100% CORRECT ANSWERS

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BIOLOGY 189 EXAM 3 CSN QUESTIONS WITH 100% CORRECT ANSWERS

Institution
Biology 189
Course
Biology 189

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Pyruvate oxidation and the citric acid cycle


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completes the breakdown of glucose




Active Site


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The site on the enzyme where the substrate binds




(T or F) Electrons lose a lot of their potential energy when they are transferred from
glucose to NAD+

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False. (They lose very little of their potential energy)




Lagging Strand


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A discontinuously synthesized DNA strand that elongates by means of
Okazaki fragments, each synthesized in a 5' → 3' direction away from the
replication fork




Thermal Energy


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It is kinetic energy associated with the random movement of atoms or
molecules




What does Antiparallel mean (in reference to DNA)?


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the two strands of DNA are oriented in opposite directions, like the lanes of
a divided highway. Two sugar phosphate backbones of DNA

,The elongation of the leading strand during DNA synthesis...?


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Depends on the action of DNA polymerase




Some bacteria are metabolically active in hot springs because...?


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their enzymes have high optimal temperature




Activator


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A protein that binds to DNA and stimulates gene transcription. In
prokaryotes, activators bind in or near the promoter. In eukaryotes,
activators generally bind to control elements in enhancers




DNA Ligase


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, It is an an enzyme that, once DNA pol I has removed all the primers and
replaced them with DNA nucleotides, it joins the sugar-phosphate
backbones of all the Okazaki Fragments into a continuous DNA strand




Cellular Respiration (Pyruvate Oxidation and the Krebs Cycle)


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Why is ATP useful to the cell?


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It is useful to the cell because the energy it releases on losing a phosphate
group is somewhat greater than the energy most other molecules could
deliver




Most CO2 from catabolism is released during...?


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Institution
Biology 189
Course
Biology 189

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