Biology: Enzymes Biology, grade 9 - 12. Review the role of enzymes as catalysts that lower the activation energy of biochemical reactions in biological systems. Based on NGSS standards HS-LS1-1, HS-LS1-2, HS-LS1-3. 15 Questions by Science_by_Kahoot 12/07/2017 answers Play N/A plays Enzymes are ... lipids carbohydrates proteins nucleic acids What is made and used by cells to speed up the rate of reaction? carbohydrates ph regulators nucleic acids catalysts An enzyme speeds up a reaction by ... lowering the activation energy raising the activation energy releasing energy absorbing energy and 11 more awesome questions! Check them out by clicking “Play”.