Biochemistry A small Ca2+ binding protein that modifies the activity of many enzymes and other proteins m response to changes in Ca2+ concentration, is known as A Cycline B Calmodulin C Collagen D Kinesin 💡 Explanation A small Ca2+ binding protein that modifies the activity of many enzymes and other proteins m response to changes in Ca2+ concentration, is known as ✓ Correct Answer: B. Calmodulin