TEAS Science · Practice Question

    Enzymes: TEAS Practice Question with Answer & Explanation

    An original TEAS 7-style science practice question, written for nursing-school applicants — with a full breakdown of every answer choice.

    Question

    What usually happens to an enzyme exposed to a temperature far above its optimum?

    • A.It becomes a lipid
    • B.It is denatured
      Correct
    • C.It gains new substrates
    • D.It converts into ATP

    Correct answer: B. Excessive heat can disrupt the enzyme's three-dimensional shape and reduce its activity.

    Why B is correct

    Excessive heat can disrupt the enzyme's three-dimensional shape and reduce its activity.

    How to solve this TEAS question

    Identify what the question is testing, eliminate choices that conflict with the relevant rule or evidence, and then select the option that directly answers the prompt.

    Review the alternatives

    The other choices do not satisfy the scientific fact, mathematical operation, language rule, or reading evidence tested by this question. Always compare each option with the exact wording of the prompt before deciding.

    Quick study tip: Enzyme function depends on maintaining the active site's shape.

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