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Chemistry
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13 Dec 2019

What are enzymes?

(A) Catalysts for biological reactions

(B) Products of a chemical reaction

(C) Reactants of a chemical reaction

(D) Substances needed to start a reaction

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Keith LeannonLv2
17 Dec 2019
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Related questions

Which of the following correctly applies to a catalyst?

A. They do not actually participate in the chemical reaction and therefore are unchanged at the end of the reaction.

B. They provide an alternate lower energy mechanism by which the reaction proceeds.

C. They must be in the same phase as the reactants in the chemical reaction.

D. Biological catalysts are proteins called substrates.

From the following statements select all that are true.

Question 6 options:

A)

All enzymes are proteins.
B)

All proteins are enzymes.
C)

Enzymes in our bodies function as biological catalysts.
D)

Biological catalysts speed up rates of chemical reactions.
E)

If an enzyme slows down a chemical reaction it is called an allosteric inhibitor.
F)

Many inorganic divalent cations like iron (Fe2+), zinc (Zn2+) and magnesium (Mg2+) are essential for our survival in part because they function as cofactors that activate enzymes in our bodies.
G)

Enzyme inhibitors retard an enzyme's activity and an inhibitor can be classified as a non competitive inhibitor if its effects on the enzyme's activity can be overcome simply by adding more substrate to the system.

What factors influence the rate of a chemical reaction? a. temperature, quality of glassware, reactant concentration, catalysts, pressure, particle size, phase of reactants b. temperature, pressure, reactant concentration, catalysts, pressure, color, phase of reactants c. temperature, time of day, reactant concentration, catalysts, pressure, color, phase of reactants d. temperature, reactant concentration, catalysts, pressure, surface area, phase of reactants

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