A Plot of Enzyme Activity with and Without an Inhibitor

question 4

Essay

A plot of enzyme activity with and without an inhibitor present gave the following plot. What type of inhibitor is present? How does this inhibitor function? What changes are seen in V_max and K_M? Draw a line that approximates the result from addition of twice as much inhibitor to the reaction.

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Definitions:

Absorption Costing

A product costing method in accounting that adds up all manufacturing expenses, including direct materials, direct labor, and both kinds of overheads (variable and fixed), to derive a product’s cost.

Variable Costing

An accounting method that only includes variable production costs (materials, labor, and overhead) in product costs, excluding fixed overhead.

Direct Labor

Direct labor comprises the labor costs of workers directly involved in the production of goods or services.

Absorption Costing

A costing method that includes all manufacturing costs - direct materials, direct labor, and both variable and fixed manufacturing overhead - in the cost of a unit of product.