Question

an enzyme

is an organic catalyst
increases the the activation energy of a reaction
is a inorganic catalyst
can bind to nearly any molecule
is a source of energy for endergonic reactions

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part d

what name is given to the reactants in an enzymatically catalyzed reaction?

products
substrate
active sites
reactors

Explanation:

Enzymes are proteins that act as organic catalysts, speeding up chemical reactions by lowering the activation energy. They are highly specific in binding to substrates (the reactants in an enzymatically - catalyzed reaction). They are not a source of energy for endergonic reactions and are not inorganic.

Answer:

First question: is an organic catalyst
Second question: substrate