Km in the Michaelis-Menten equation represents
A) The maximum amount of substrate that can be catalyzed by the enzyme.
B) The amount of substrate required for the initial velocity to be half of the maximal velocity.
C) The amount of substrate required to start an enzymatic reaction.
D) A set constant used for all enzymatic reactions
Answer: B
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Glycolysis is best defined as the breakdown of
A. glycogen to glucose-6-phosphate. B. glucose to carbon dioxide and water. C. glucose to two molecules of pyruvate. D. pyruvate to carbon dioxide and water. E. glucose to glycogen.
What substances are needed to produce red blood cells?
A. Folic acid B. Iron C. Vitamin B12 D. All of the choices are correct.
The opening of more and more Na+ channels during depolarization
A. is an example of a positive feedback cycle. B. is the cause of the afterpotential. C. is the result of the sodium-potassium exchange pump. D. is an example of a negative feedback cycle. E. is possible only if K+ channels remain closed.
Both pancreatic juice and bile are secreted into the duodenum
Indicate whether the statement is true or false