Question

Figure 1. Receptor proteins produced as a result of alternative splicing followed by activation of a second messenger

Answer 1

Answer:

Explanation:

Firstly; the missing figure is attached in the diagram below.

Ligand A and ligand B can cause identical cellular responses in a cell due to the fact that there are cross-linkages in the various enzymatic activities taking place in the receptor proteins located in the plasma membrane.

This implies that a particular compound in the cell signaling in eukayortes can be triggered by some mechanism. For example as we can see right in the diagram; The ligands  can trigger the G-protein in the plasma membrane which result into increase in cAMP.

In addition to that; IP3/DAG pathway  can signal and trigger the calcium influx moving into the cytoplasm from the endoplasmic reticulum