SECTION 1: ACTIVATION ENERGY The picture to the right shows someone trying to push a boulder up a hill. In order for the boulder to reach its final destination at point B, it must be pushed to the top of the hill because once it reaches the top of the hill it will roll down the rest of the way. A similar scenario exists in chemistry, before a chemical reaction will take place, energy must be put into the system. The energy needed for a chemical reaction to move from point A to the top of the hill is known as activation energy, also written as Ea. Increasing Energy Activation Energy Activation Energy Energy Content of Reactants. Progress A + B Reactants. FIGURE 3 SV سعد Reaction Uncatalyzed Reaction (without enzyme) W FIGURE 2 Energy Content of Products Catalyzed Reaction (with enzyme) A C + D Products S X₁A ↓ (TIME) 3. Compare Figure 3 above to the Figure 1 (comparing the heights of 2 mountains), determine how using an enzyme in a chemical reaction impacts the reaction by answering these questions. As seen in the graph a. Does it speed up or slow down the reaction? b. What does the enzyme do to activation energy? c. Based on your answers to questions a and b, what do you think the term "catalyzed" means?

Can someone give me  an understanding of Products and Reactants? The first image is from the the first chapter where it was introduced under the subject of life, chemistry and water. The second image is on another chapter I am speaks under the subject of Energy, Enzymes and Biological reactions. I can't understand it without the root understanding and application of Products and Reactants.

SECTION 4: FACTORS AFFECTING ENZYME RATE You now know that enzymes have a very specific shape and they must retain their shape in order to function properly. There are many factors that can change the shape of an enzyme and/or change the rate at which it works. Concentration of enzyme or substrate, temperature and pH are just a few factors that have the potential to change the rate of a chemical reaction. 16. With the knowledge that a lot of enzymes work within the human body, hypothesize what temperature and pH might be optimal for enzymes to work properly. Analyze the experiment below to determine the effects of temperature and pH on enzymatic activity. H₂O2 is produced as a byproduct of many metabolic processes, but it is toxic to most living organisms. Many organisms are capable of enzymatically destroying the H₂O2 before it can do much damage. H₂O₂ can be converted to oxygen and water, as follows: 2 H₂O2 → 2 H₂O + O₂ Although this reaction occurs spontaneously, enzymes increase…

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