`Ca^(+2),IP_(3),C-AMP` etc. Are generated after binding of hormone on receptor present on membrane thus these are termed as

Answer

**Step-by-Step Solution:**

1. **Understanding the Components**: The question mentions Ca²⁺ (calcium ions), IP₃ (inositol triphosphate), and cAMP (cyclic adenosine monophosphate). These are all molecules that play a role in cellular signaling.

2. **Hormone-Receptor Interaction**: Hormones, particularly peptide hormones, bind to specific receptors on the cell membrane. This binding is crucial because peptide hormones are hydrophilic and cannot cross the lipid bilayer of the plasma membrane.

3. **Role of Secondary Messengers**: Upon binding of the hormone to its receptor, a cascade of intracellular events is triggered. This often involves the generation of secondary messengers such as Ca²⁺, IP₃, and cAMP. These secondary messengers amplify the signal initiated by the hormone.

4. **Definition of Secondary Messengers**: The molecules generated (Ca²⁺, IP₃, cAMP) after the hormone binds to its receptor are termed "secondary messengers." They serve to relay and amplify the signal from the hormone, allowing for a cellular response.

5. **Conclusion**: Therefore, the answer to the question is that Ca²⁺, IP₃, and cAMP are termed as **secondary messengers**.

---