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Human Physiology, Stuart Ira Fox Chapter 4 Questions and Answers $8.19   Add to cart
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Human Physiology, Stuart Ira Fox Chapter 4 Questions and Answers
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  • Fundamentals of Human Physiology

Human Physiology, Stuart Ira Fox Chapter 4 Questions and Answers Enzymes *** biological catalysts that speed up the rate of chemical reactions Ability of enzymes to lower energy requirement is due to __________ *** structure Substrate *** the reactant on which an enzyme works

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  • June 29, 2024
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  • 2023/2024
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Human Physiology, Stuart Ira Fox Chapter 4
Questions and Answers
Enzymes *** biological catalysts that speed up the rate of chemical reactions

Ability of enzymes to lower energy requirement is due to __________ *** structure

Substrate *** the reactant on which an enzyme works

conformation of an enzyme *** highly-ordered 3D shape

T/F: Enzymes act by bringing substrates close together so they can react *** True

Substrates fit into the specifically shaped ________ _______ of the enzymes that
catalyze their reactions. *** active sites

enzyme activity influenced by: *** temperature, pH, concentration of cofactors,
coenzymes, enzyme and substrate

Enzymes have optimal ________ and ________ *** temperature; pH ranges

cofactors and coenzymes *** two types of activators (ways to turn on enzymes);
necessary for normal activity of enzymes

Cofactors *** include metal ions such as Ca, Mg, Mn, Zn, Cu, Se

Coenzymes *** are organic molecules derived from vitamins

T/F: Coenzymes transport small molecules needed by enzymes *** True

zymogen *** inactive form of an enzyme

Rate of product formation increases as ________ increases; (until reaction rate reaches
a plateau) *** substrate concentration

Where enzyme is said to be __________, every enzyme in a solution is being used and
adding anymore substrates will not increase rate of chemical reaction *** saturated

law of mass action *** The rate of a chemical reaction is proportional to the product of
the concentrations of the reactants

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