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Question.
Passage: "Arsenate, a derivative of arsenic, is a deadly poison that acts as a substrate for glyceraldehyde 3-phosphate dehydrogenase."
Question:
The action of arsenate on glyceraldehyde 3-phosphate dehydrogenase is best described as:
A. competitive inhibition
B. noncompetitive inhibition
C. allosteric inhibition
D. negative feedback
Based on the passage alone, you cannot distinguish if the inhibition is competitive or noncompetitive, correct?
I think the way to answer this question is to look at the answer choices. D cannot be correct. According to EK, "You will not be asked to distinguish allosteric inhibition from noncompetitive inhibition on the MCAT." First off is this statement true?
If so, then B and C are the same choice, and by process of elimination A must be correct.
Does "substrate" imply a substrate at the active site and therefore competitive inhibition? Or do you call molecules that bind at places other than the active site (noncompetitive inhibitors) 'substrates' as well?
Passage: "Arsenate, a derivative of arsenic, is a deadly poison that acts as a substrate for glyceraldehyde 3-phosphate dehydrogenase."
Question:
The action of arsenate on glyceraldehyde 3-phosphate dehydrogenase is best described as:
A. competitive inhibition
B. noncompetitive inhibition
C. allosteric inhibition
D. negative feedback
Based on the passage alone, you cannot distinguish if the inhibition is competitive or noncompetitive, correct?
I think the way to answer this question is to look at the answer choices. D cannot be correct. According to EK, "You will not be asked to distinguish allosteric inhibition from noncompetitive inhibition on the MCAT." First off is this statement true?
If so, then B and C are the same choice, and by process of elimination A must be correct.
Does "substrate" imply a substrate at the active site and therefore competitive inhibition? Or do you call molecules that bind at places other than the active site (noncompetitive inhibitors) 'substrates' as well?