Which of the Following Is an Immediate Effect of Histamine

question 20

Multiple Choice

Which of the following is an immediate effect of histamine release?

• A) dilation of local blood vessels
• B) blocking of a response to ragweed pollen
• C) decrease in heart rate
• D) increase in blood pressure

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Definitions:

Activation Energy

The minimum amount of energy required to initiate a chemical reaction.

Biological Catalysts

Enzymes that speed up chemical reactions in biological processes without being consumed.

Enzymes

Biological catalysts that speed up chemical reactions in living organisms by lowering the activation energy.

Phosphorylation Reaction

A chemical process that involves the addition of a phosphate group to a molecule, often altering the function of proteins.