Enzyme's Gizmos Test With Verified And Correct Answers.

What is metabolism? - correct answer term used for all of the chemical reactions that happen in the body All chemical reactions = - correct answer metabolism What is a catabolic reaction? - correct answer Breaks down larger molecules into smaller molecules All chemical reactions involve? - correct answer Chemical substances=reactants and different substances=products What happens when the reaction starts to the reactants? - correct answer reactants get used up so their amount decreases. The reaction makes more products, so their amount increases. What is reaction rate? - correct answer The speed at which a chemical reaction happens. In science, the word "rate" refers to how quickly something changed over time. Reaction rate example - correct answer When the reaction was performed at a slow rate, 4 product molecules were made over 2 seconds (2 products/seconds). When the reaction rate was faster, 6 products were made. reaction rate formula - correct answer Amount of product/time = Rate Why are reaction rates important? - correct answer for organisms to survive and grow, their chemical reactions must happen very quickly Chemical reactions break down food - correct answer Adding enzymes speeds up digestion Chemical reactions build muscles - correct answer Adding enzymes speed up muscle growth What is an enzyme? - correct answer Enzymes are proteins that make chemical reactions happen faster. What are catalysts? - correct answer Substances that increase the rate of a chemical reaction. Enzymes = catalysts that organisms use to speed up their chemical reactions. For example, the reaction of nitrogen and hydrogen to form ammonia is important in both organisms and in chemistry. This reaction is slow and the rate must be increased with a catalyst (ex. iron). Are all enzymes catalysts? Are all catalysts enzymes? - correct answer Key concept: enzymes are a type of catalyst. All enzymes are catalysts, but not all catalysts are enzymes. What effects would the enzyme have on the amount of product made in 3 seconds. - correct answer Enzymes speed up chemical reactions so more product is made in the same amount of time. What effect would the enzyme have on the time to make 1 mg of product. - correct answer Enzymes speed up chemical reactions so the product is made in less time. Which line is the ready with an enzyme (insert graphs) - correct answer Enzymes increase the reaction rate causing the reaction to make more products. Like A shows the reaction that formed more product (200mg vs Line AB's 20 mg), so line A must be the reaction with enzyme. What is needed for a chemical reaction to begin? - correct answer Energy Activation energy - correct answer The smallest (minimum) amount of energy needed to start a chemical reaction. Once the activation energy is added, the reaction starts. Sources of energy to enable reaction initiation - correct answer 1) heat 2) collision of reactants. Oftentimes, there is not enough energy available to reach the activation energy, so the reaction never begins. Do enzymes reduce or increase activation energy? - correct answer Enzymes reduce the activation energy. Instead of just colliding, the reactants attach to the enzyme and the reaction happens much more efficiently. As a result, less energy is needed and reactions start more often. Which of the following will not increase the reaction rate. 1) increase the amount of energy 2) add an enzyme 3) lower the activation energy 4) decrease the temperature - correct answer 4 - it would lower the amount of energy. With less energy, the reactants would be less likely to reach the activation energy and start the reaction. A graph that shows the level of energy at different times during a reaction. - correct answer X axis- the progress of the reaction from reactants to products Y- axis - level of energy Wh