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biochemistry parcial
1-6 chapters of harvey
Question | Answer |
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which one of the following statements about enzymic reaction is correct? | at a certain enzyme concentration, the reaction velocity increases with increasing substrate concentration until V max is reached |
one of the factors that regulate the activity of an enzyme is substrate or the cellular concentration of substrate. when is enzyme activity effectively regulated by the substrate concentration? | when the substrate concentration is less than or equal to Km |
Glucose+ATP-glucose 6-P+ADP ; Delta G= -400 cal/mol Reaction=1 | Reaction 3 will proceed as directed because its delta G is negative |
the rate of an enzyme-catalized reaction was measured using several substrate concentrations that were much lower than Km. Which one of the following statements is Correct? | reaction velocity is proportional to the substrate concentration |
which of the following statements about the properties of individual amino acids is Correct? | because of its hydrophobic character, methionine is commonly found in amphipathic helices, on the face that is oriented toward the interior of the protein |
oxidative phosphorylation is true? | complex IV binds cyanide (CN-) |
the urea is dissolved in water, the solution gets colder. what statement can you make about the entropy change of this process? | The delta S is positive |
characteristic of allosteric enzymes? | they frequently show cooperative binding of substrate |
2,4 dinitrophenol is an effective weight-reducing agent. its weight reducing capacity is ascribes to its ability to | lower the concentration of protons in the inter-membranous space of the mitochondria |