Enzymes are catalysts that increase the rate of reactions bypulling two substrates together. lowering the energy of activation. binding to a substrate and releasing protons. binding to a substrate and producing energy.

Answered: Enzymes are catalysts that increase the…

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter3: Cells And How They Work

Section: Chapter Questions

Problem 8SQ: Enzymes _______. a. enhance reaction rates b. are affected by pH c. act on specific substrates d....

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Question

Enzymes are catalysts that increase the rate of reactions by

pulling two substrates together.
lowering the energy of activation.
binding to a substrate and releasing protons.
binding to a substrate and producing energy.

Expert Solution

Step 1

Catalysts speed up the chemical reaction without being changed themselves. All living organisms prepare biological catalysts called enzymes. Enzymes are globular proteins that act as biocatalysts for many chemical reactions. In the absence of enzymes, many chemical processes occur at a very slow rate in living organisms. By preparing enzymes, cells can regulate what chemical reactions happen in their cytoplasm.