Which of the Following Statements Concerning the Action of a Catalyst

question 4

Multiple Choice

Which of the following statements concerning the action of a catalyst are true? Select all that apply.

• A) Catalysts alter the enthalpy change of a reaction.
• B) Catalysts are normally consumed during the course of a reaction.
• C) Catalysts provide an alternative mechanism for the reaction.
• D) Catalysts do not take part in the reaction that they speed up.
• E) Catalysts lower the activation energy of a reaction.

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Definitions:

Spiracles

Small openings on the surface of some animals, like insects, that lead to the respiratory system, allowing gas exchange.

Ventilate

To provide with a supply of fresh air by allowing air to flow through a space, often through natural or mechanical means.

Respire

The process by which living organisms take in oxygen and release carbon dioxide, involved in energy production.

Gas Exchange

The biological process through which organisms, such as plants and animals, exchange gases with their environment, involving oxygen and carbon dioxide.