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Chapter 6, Problem 7TYU

DRAW IT Using a series of arrows, draw the branched metabolic reaction pathway described by the following statements. Then answer the question at the end. Use red arrows and minus signs to indicate inhibition.

L can form either M or N.

M can form O .

O can form either P or R.

P can form Q .

R can form S.

O inhibits the reaction of L to form M.

Q inhibits the reaction of O to form P.

S inhibits the reaction of O to form R.

Which reaction would prevail if both Q and S were present in the cell at high concentrations?

  1. A.    L → M
  2. B.     M → O
  3. C.     L → N
  4. D.    O → P
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DRAW IT Using a series of arrows, draw the branched metabolicreaction pathway described by the following statements, andthen answer the question at the end. Use red arrows and minussigns to indicate inhibition.L can form either M or N.M can form O.O can form either P or R.P can form Q.R can form S.O inhibits the reaction of L to form M.Q inhibits the reaction of O to form P.S inhibits the reaction of O to form R.Which reaction would prevail if both Q and S were present inthe cell in high concentrations?(A) L S M(B) M S O(C) L S N(D) O S P
Draw a typical enzyme and explain how lactose could be broken down by the enzyme. Label the enzyme and explain the difference between competitive and noncompetitive inhibition (which one is more dangerous and why?)
For each of the statements below about the dUTPase enzyme, mark whether it is true or false. If it is false, change the language to make the statement true. _______If the dUTPase enzyme is the rate determining step in a larger metabolic pathway, the reaction likely lies near to equilibrium and is irreversible. _______For the dUTPase reaction, it is not likely that DG’ = DG°’ _______ dUTPase has a higher affinity for its substrate than for its product, but both of these are higher than the affinity for the transition state _______Kinetic analysis of dUTPase using Michaelis-Menten methods assumes that the formation of the E*S complex has a large negative value for DG
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