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Class 12 Biology · Chapter 3 · Test 5

Receptors and Drugs

38 MCQs

MCQs

38 questions · 30 min · 38 marks

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Sample questions

The first 5 of 38. Try each one, then tap to see the answer.

  1. Question 1

    Nociceptors are specialized receptors that detect:

    • ALight touch
    • BDeep pressure
    • CPain
    • DTaste
    Show answer

    Answer: C

    Nociceptors detect pain as a stimulus causing or about to cause tissue damage.

  2. Question 2

    Which receptor detects deep pressure and vibration?

    • AMeissner's corpuscles
    • BPacinian corpuscles
    • CMerkel cells
    • DRuffini endings
    Show answer

    Answer: B

    Pacinian corpuscles lie deep in the skin and detect deep pressure and vibration.

  3. Question 3

    Which of the following is a narcotic drug used for pain relief?

    • ACaffeine
    • BMorphine
    • CAlcohol
    • DNicotine
    Show answer

    Answer: B

    Morphine is an opioid narcotic along with codeine and oxycodone.

  4. Question 4

    Withdrawal symptoms of drug abuse include:

    • AImproved concentration
    • BHeadache, nausea, and anxiety
    • CIncreased euphoria
    • DFaster drug metabolism
    Show answer

    Answer: B

    Withdrawal causes symptoms like headache nausea anxiety and insomnia.

  5. Question 5

    Caffeine increases alertness by:

    • AIncreasing dopamine receptors
    • BBlocking adenosine receptors
    • CStimulating nociceptors
    • DEnhancing serotonin degradation
    Show answer

    Answer: B

    Caffeine blocks the action of adenosine which promotes sleep.

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