How to Change Font Color in Adobe Reader. March 31, 2015. Adobe created the portable document format, or PDF, so that files could be shared easily across computer platforms. Adobe PDF documents can be multi-page documents or single-page documents, and can include an array of graphics and text in an assortment of colors.
Which fact is most important in explaining how enzymes speed reactions? Very low potential energy tends to make molecules unstable. High-energy collisions are less common than low-energy collisions. It takes less energy to break a hydrogen bond than a covalent bond. Large molecules collide more energetically than small molecules. Every reaction step adds to the time required for the overall reaction. Study Enzyme Activity.
â¢ Enzymes are proteins that act as catalysts. Catalysts increase the rate of a chemical reaction without being consume by the reaction. Enzymes are not altered during a reaction and therefore they can be reused again and again.â¢ An enzyme speeds up a reaction by lowing the reactionâs activation energy.ll reactions require some energy to get started (activation energy). Enzymes lower the activation energy they do not provide activation energy. All chemical reactions require activation energy (Ea). Without enzymes reaction in cells would be slow and take a very long time.â¢ Enzymes are specific for certain reactions.