Q1 / 322 · NTA Abhyas (NEET) 2020 · Zoology · Chemical Coordination and Integration

Hormones which interact with the membrane-bound receptors normally do not enter the target cell but generate second messengers. These second messengers are referred as

  • A
    Calcium ion and inositol 3-phosphate
  • B
    Inositol 3-phosphate and cAMP
  • C
    cAMP and calcium ion
  • Correct answer
    D
    All of the above

Solution

Second messengers are intracellular signalling molecules released by the cell in response to exposure to extracellular signalling molecules: the first messengers.

Examples of second messenger molecules include cyclic AMP, cyclic GMP, inositol trisphosphate, diacylglycerol and calcium.

Hence, the correct answer is option: 'D'.

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