Final answer:
True. Receptor tyrosine kinases (RTKs) dimerize upon activation, forming a functional complex called a dimer.
Step-by-step explanation:
True. Receptor tyrosine kinases (RTKs) dimerize upon activation. Dimerization is the interaction of two receptor proteins to form a functional complex called a dimer. When a signaling molecule binds to an RTK, the extracellular domains of the receptors come into close contact, leading to the activation of their intracellular domains. This activation initiates a downstream cellular response.