For Each Sentence Below, Choose the Correct Preposition to Insert

question 14

Multiple Choice

For each sentence below, choose the correct preposition to insert. Select the letter of the correct answer. I left the sheet music ____ top of the piano.

• A) in
• B) on
• C) for

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Definitions:

Catalysts

Substances that increase the rate of a chemical reaction without themselves undergoing any permanent chemical change.

Enzymes

Biological molecules that significantly speed up the rate of virtually all of the chemical reactions within cells.

Anabolism

The constructive phase of metabolism in which cells synthesize complex molecules from simpler ones, such as proteins from amino acids.

Structural Proteins

Proteins that provide support and shape to cells and organisms, such as collagen in connective tissues and keratin in hair and nails.