Which of the following is (are) intracellular second messengers?

a. Ca2+                        b. cAMP          c. epinephrine             

d. protein kinase A      e. protein kinase C

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#Question id: 19506

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The elements with atomic numbers 9, 17, 35, 53, 85 are all ———-

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#Question id: 19507

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Which of the following electronic configurations of an atom has the lowest ionisation enthalpy?

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#Question id: 19508

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The Ionic radius of cation is always———

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#Question id: 19509

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Which of the following elements has the maximum negative electron gain enthalpy?

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#Question id: 19510

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The most electronegative element in the periodic table is———

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#Question id: 19511

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The elements of group 16 are called———-