In the presence of an enzyme, the Activation energy is lowered. thus the reactions reaches the activation energy and the reaction is initiated faster and therefore completes faster than the reactions without enzymes. Enzymes lower activation energy, which allows a reaction to occur at a faster rate.
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Arrow a should point to muscle tissue, arrow B should point to an organ, arrow c should point to organ system.
Eukaryotic cells have a nucleus and Prokaryotic cells do not.
A, because because because because because yes❤️
