Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy. Many enzymes change shape when substrates bind. This is termed "induced fit", meaning that the precise orientation of the enzyme required for catalytic activity can be induced by the binding of the substrate. Show Enzymes have active sites. The enzyme active site is the location on the enzyme surface where substrates bind, and where the chemical reaction catalyzed by the enzyme occurs. There is a precise substrate interaction that occurs at the active site stabilized by numerous weak interactions (hydrogen bonds, electrostatic interactions, hydrophobic contacts, and van der Waals forces). Enzymes form complexes with their substrates. The binding of a substrate to an enzyme active site is termed the "enzyme-substrate complex." A generic equation for complex formation is as follows: Enzymes do not:Change the equilibrium constant for a reaction. Keq depends only on the difference in energy level between reactants and products. Change ΔG for a reaction. As shown in the graphs above, enzymes only lower activation energy, but do not change the difference in energy levels between reactants and products. Which of the following statements are true about Enzymes?The correct answer is (b) Enzymes can require vitamin or mineral cofactors for their function. Enzymes are proteins that function to catalyze chemical reactions in living organisms.
What three statements are true about Enzymes?Select the three statements that correctly describe enzymes An enzyme makes a reaction more likely by lowering the energy of the products. The active site of an enzyme binds a reactant Enzymes catalyze biological reactions_ Enzymes have 'specific three-dimensional shapes.
What is the statement about Enzymes?Enzymes are proteins
They act as catalysts, which means that they make biochemical reactions happen faster than they would otherwise. Without enzymes, those reactions simply would not occur or would run too slowly to sustain life. For example, without enzymes, digestion would be impossible.
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