TEAS Science · Practice Question

    Blood: 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

    Which blood component is primarily responsible for clot formation?

    • A.Platelets
      Correct
    • B.Erythrocytes
    • C.Plasma water
    • D.Lymphocytes

    Correct answer: A. Platelets aggregate at damaged vessels and help activate the clotting cascade.

    Why A is correct

    Platelets aggregate at damaged vessels and help activate the clotting cascade.

    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: Platelets plug and clot; red blood cells transport oxygen.

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