Question

Biological reactions usually involve the interaction of an enzyme with a substrate, the substance that actually undergoes the chemical change. In many cases, the rate of reaction depends on the concentration of the enzyme but is independent of the substrate concentration. What is the order of the reaction with respect to the substrate in such instances?

Name: Problem 22, Chapter 13: Chemistry: The Molecular Nature of Matter
Uploaded: 2021-07-08T18:09:07-08:00
Duration: 1 min 21 s
Channel: Anthony Han
Description: Biological reactions usually involve the interaction of an enzyme with a substrate, the substance that actually undergoes the chemical change. In many cases, the rate of reaction depends on the concentration of the enzyme but is independent of the substrate concentration. What is the order of the reaction with respect to the substrate in such instances?

   Biological reactions usually involve the interaction of an enzyme with a substrate, the substance that actually undergoes the chemical change. In many cases, the rate of reaction depends on the concentration of the enzyme but is independent of the substrate concentration. What is the order of the reaction with respect to the substrate in such instances?

Chemistry: The Molecular Nature of Matter

Neil D. Jespersen,… 7th Edition

Chapter 13, Problem 22

Instant Answer

Solved by Expert Anthony Han

07/08/2021

Step 1

This means that the substrate concentration does not appear in the rate equation. Show more…

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Biological reactions usually involve the interaction of an enzyme with a substrate, the substance that actually undergoes the chemical change. In many cases, the rate of reaction depends on the concentration of the enzyme but is independent of the substrate concentration. What is the order of the reaction with respect to the substrate in such instances?

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Key Concepts

Enzyme Kinetics

This is the study of chemical reactions that are catalyzed by enzymes. It involves understanding how enzymes interact with substrates to form products, which often includes concepts like enzyme-substrate binding, catalytic efficiency, and reaction rates under different conditions.

Reaction Order

Reaction order refers to the power to which the concentration of a reactant is raised in the rate equation. It indicates how sensitively the rate of a reaction depends on the concentration of that reactant.

Zero-Order Reaction

In zero-order reactions, the reaction rate is independent of the concentration of one of the reactants—in this case, the substrate. This typically occurs in enzyme-catalyzed reactions when the enzyme is saturated with substrate, meaning that further increases in substrate concentration do not affect the rate of product formation.

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