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Enzymology Quiz Biology

Enzymology Quiz Biology

Enzymes accelerate chemical reactions. The molecules upon which enzymes may act are called substrates and the enzyme converts the substrates into different molecules known as products.

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Quiz Questions And Answers

Enzymes are protein catalysts. True or false?

True
False

Defined, a catalyst is:

A substance that speeds up a chemical reaction, but is consumed in the process
A substance that slows down a chemical reaction, without being consumed in the process
A substance that speeds up a chemical reaction, without being consumed in the process
A substance that slows down a chemical reaction, but is consumed in the process

In catalyzed reactions, the reactants are converted into products much slower than they would without a catalyst. True or false?

True
False

Some reactions possess an activation energy barrier that must be overcome for the reaction to occur.

True
False

Living cells can rely on high levels of heat as a source of activation energy

True
False

A catalyst speeds up endergonic and exergonic reactions by heightening the activation energy.

True
False

A catalyst speeds up endergonic and exergonic reactions by lowering the activation energy, but it does not change the value of delta G

True
False

Catalysts work by reducing the activation energy, thereby speeding up forward and reverse reactions at different rates

True
False

Defined, a substrate is:

The reactant that an enzyme acts on when it catalyzes a chemical reaction
The product that an enzyme acts on when it catalyzes a chemical reaction
A and B
None of the above

The substrate binds to a particular site on the enzyme to which it is attracted

True
False

Enzymes are proteins in tertiary or quaternary structure with simple conformations

True
False

Enzymes are very specific for the substrate to which they bind

True
False

In enzyme-catalyzed reactions, the substrate binds to a very small portion of the enzyme, called the:

Binding site
Active site
Inactive site
Bonding site

The substrate and active site must contain distinctive shapes for binding to occur

True
False

The attachment of the substrate to the enzyme's active site creates the:

Enzyme-substrate complex
Substrate complex
Enzyme complex
Catalyst complex
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