Which effect results when cellular receptor tyrosine kinases are continuously activated by an endocrine hormone in the absence of a normal feedback signal?

💡 Explanation

Continuous tyrosine kinase activation bypasses normal regulatory mechanisms that control cell proliferation; because of this, cell cycle progression becomes unregulated, therefore leading to uncontrolled cell growth and potential oncogenesis, rather than receptor downregulation or hormone level changes.

• Why does aplastic anemia increase susceptibility to opportunistic infections more than iron deficiency anemia?
• Why does overhydration lead to hyponatremia in renal failure patients?
• Which mechanism explains why some bacterial infections become untreatable despite initial antibiotic sensitivity?
• If a genetically engineered mouse lacks functional MHC class II molecules, which consequence follows regarding its adaptive immune response to a novel bacterial infection?
• In a female patient with irregular menstrual cycles undergoing fertility treatment, what causes the multiple ovulations often stimulated by exogenous gonadotropins?
• A population of *Pseudomonas aeruginosa* expresses an efflux pump conferring resistance to a beta-lactam antibiotic. Which event most likely allows the bacteria to thrive, despite increasing antibiotic concentration?