Enzymes a and B Catalyze Different Reactions, but Use the Same

question 61

Essay

Enzymes A and B catalyze different reactions, but use the same reactant molecule as a substrate.The graph in Figure 3-74 presents the reaction rates observed when enzyme A and enzyme B are mixed together in a single test tube containing molecule X.What are the V_max and the apparent K_m values for each enzyme under these conditions? How might these values change for enzyme B if it were analyzed in the absence of enzyme A? Explain your answer. (A)
$\begin{array} { l } x \stackrel { A } { \rightleftharpoons } Y \\X \stackrel { B } { \rightleftharpoons } z\end{array}$

(B)

Figure 3-74

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Definitions:

Bovine Infertility

The inability of cows to conceive and produce offspring.

Supply Curve

A graphical representation of the relationship between the price of a good or service and the quantity of that good or service that a supplier is willing and able to supply at each price.

Elastic

Describes the responsiveness of the quantity demanded or supplied of a good or service to a change in its price.

Price Elasticity

A measure that describes how the quantity demanded of a good changes in response to a change in its price.