Concept explainers
Introduction:
A catalyst is a chemical that increases the rate of a
Answer to Problem 18A
Correct answer :
The correct answer is option C. a catalyst.
Explanation of Solution
Explanation/justification for the correct answer :
Option C. a catalyst. Catalyst is a substance that modifies the transition state to lower the activation energy; they are composed only of protein or small molecule cofactor is termed an enzyme. A catalyst increases the
Explanation for incorrect answer :
Option A. an ion. Ions are electrically charged atom or group of atoms formed by the loss or gain of one or more electrons. So, this is an incorrect answer.
Option B. a reactant. Reactant is a substance that takes part in and undergoes change during a reaction. So, this is an incorrect answer.
Option D. a substrate. Substrate is the starting material for an enzymatic chemical reaction. There may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. So, this is an incorrect answer.
Chapter 6 Solutions
Biology Illinois Edition (Glencoe Science)
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