enzymes true or false questions

Save. True or False: Enzymes are consumed in reactions and, thus, can only be used once. is related to " Enzymology Quiz Biology ". mrlowe's shop. True or false: All of the enzymes that a cell has are found in the cells' cytoplasm. True or false: Each step of a metabolic pathway is catalyzed by a specific enzyme. What is the term that describes how an enzyme and substrate wander around the aqueous environment of a cell in search of each other? Competitive inhibitors bind to the active site of an enzyme and prevent substrates from binding. -Not all cellular enzymes are located in the cytoplasm. -This is where a non-competitive inhibitor would bind. Answer: D. 2. Biochemistry Q&A Library Indicate whether each of the following statements about enzyme terminology is TRUE or FALSE. Name the 4 nucleotide bases. False. Enzymes are typicaly carbohydrates. true . 17. An apoenzyme has both a protein and nonprotein part. A molecule that binds to an allosteric site and prevents the proper functioning of an enzyme, A molecule that binds to a site on the enzyme other than the active site and inhibits the enzyme's activity is called a(n). The metal ion in pyruvate kinase also holds one substrate (ATP) to activate it. True or False? True or false? 30 seconds . An enzyme-catalyzed reaction velocity reaches Vmax when the substrate concentration is equal to 2 x Km. True. 9. 76% average accuracy. True or False, Enzymes are temperature and pH dependent. True: False: OK. Ans. Simple enzymes cannot contain cofactors. Next. An enzyme-catalyzed reaction velocity reaches Vmax when the substrate concentration is equal to 2 x Km. These molecules are the enzyme's substrates. How do enzymes speed up chemical reaction? Glucose + Glucose. False. Back to Science for Kids The rate of an enzyme-catalyzed reaction is a linear function of the substrate concentration. True or False? -Each enzyme in a cell catalyzes one or a few specific reactions. Enzymes change shape after a reaction occurs. Which of the following describes the activity of a particular enzyme? All conjugated enzymes contain a cofactor. false . They are match up with a specific and particular reactant. Ans. Enzymes whose concentration in a cell is depend­ent of an added inducer are termed constitutive enzymes. Biochemistry I Fall Term, 2005 Quiz Instructions in a pop-up window.. Go to the next quiz: Serine Proteases. Enzymes/DNA Handout Questions Flashcards Preview Year 1 Cell biology handouts > Enzymes/DNA Handout Questions > Flashcards Flashcards in Enzymes/DNA Handout Questions Deck (16) ... binding of an activator or inhibitor to one allosteric site will affect the activity of some of the active sites on the enzymes. True or false ? 3.Enzymes increase the activation energy. What binds to the active site of an enzyme? True or False: Enzymes are designed for very specific chemical reactions. In some reactions, one substrate is broken down into multiple products. Describe the concept of the metabolic pathway. Please tell me if these are true or false. In others, two substrates come together to create one larger molecule or to swap pieces. Which of the following are included in metabolism? Based off of its name, which one of the following proteins do you think is an enzyme? true . They are not used up. True or false? 19. True or false? Study Flashcards On Biochemistry Exam 4: True/False at Cram.com. Ans. TRUE FALSE False, the pyruvate kinase catalyzed step is an irreversible reaction in glycolysis, and therefore, True. true . I post things that are finished and that work. A more efficient way to catalyze a sequence of related biochemical reactions is to combine several proteins into a ________ complex; in this way, the product of each reaction can be delivered to the next enzyme, without being released to diffuse away. In fact, the central role of enzymes - which are proteins or RNA - is to act as catalysts in biological reactions to increase the rate and speed of chemical reactions. Cram.com makes it easy to get the grade you want! The trp operon codes for catabolic enzymes. Of those two main categories, what type of reactions are involved in the harvest of energy by breaking down larger molecules into smaller molecules? In the induced fit model, the enzyme is not rigid and changes shape slightly as the substrate enters the active site. True or false ? Enzymes. Biology. Author: Created by mrlowe. False Question 3 What is a cofactor? 9th - 10th grade ... Enzymes decrease the energy level of the products. What do enzymes do? The enzyme's activity can be increased or decreased. Complete very specific jobs and do nothing else. The collared lizard is a species found in the desert southwest. False. Created: Feb 12, 2012 | Updated: Aug 19, 2015. Lower temperatures prevent the formation of the substrate-enzyme complex while higher temperatures can denature the enzyme. o. What is the function of anabolic reactions? 4 1 review. They maintain their three dimensional shape even at a very low pH. Enzymes are both proteins and biological catalysts produced by living organisms, and these catalysts accelerate various chemical reactions. This quiz is incomplete! True or false? If the statement is false, explain why. True or false ? B. Both the synthesis and breakdown of organic molecules. False. True or false? Complete very specific jobs and do nothing else. ... * True or False pls help its easy 6th grade science one question Enzymes are typicaly carbohydrates. Proteins or RNA molecules that act as catalysts. One enzyme can be used for many different types of chemical reactions . True or false: 1. One enzyme can be used for many different types of chemical reactions. Cells can regulate the activity of enzymes by inhibiting or activating them. Chemical reactions would take … Enzymes DRAFT. This website and its content is subject to our Terms and Select the true statements about cellular enzymes. The statement that is true about enzyme is letter C, each enzyme can catalyze many different biochemical reactions. Sucrose is a disaccharide composed of 2 monosaccharides: 1 glucose molecule and 1 fructose molecule. l. only a few enzymes are required to keep the typical living cell alive and functioning normally. Save. Enzymes change shape after a reaction occurs. True: False: OK. 3. Enzymes decrease the speed of a reaction 7. Temperature affects chemical reactions in the following way: increasing the temperature of an uncatalyzed reaction __________ the rate of that reaction. Enzymes interact with specific substrates . The _____________ site is a specific region of an enzyme to which non-competitive inhibitors bind in order to regulate enzyme activity. Enzymes change the _____ of a chemical reaction. Based off of its name, which one of the following proteins do you think is an enzyme? 4.402970297029702 565 reviews. PLS HELP WILL MARK BRAINLIST True or False Enzymes are specific. 3491 plays. -> ΔG < 0 True False 9. Ta!!! Restriction enzymes recognize specific sequences on DNA and always cuts so that only blunt ends are produced. TRUE FALSE False, 6-Phosphogluconate is a more oxidized form of glucose 6-phosphate. Tes Global Ltd is I make resources when I can't find anything that works in the way which I want it to. 5.Inreasing concentration increases the rate of reaction. Enzymes speed up reactions. 9th - 12th grade . Enzymes are typicaly carbohydrates. Enzymes do interact with specific substrates because the structure of the enzyme determines its function and which substrate it will be able to break the bonds of. 3. True or false, An enzyme can only bind one reactant at a time. Why does pepsin not function well at a pH of 7? According to the first law of thermodynamics, the change in energy in a system must be either -> positive or zero. -All of the reactions inside the complex can be controlled as one unit. Delete Quiz. Increasing the temperature outside the optimal range for an enzyme can alter the enzyme's structure and impair its function. 1 See answer 0x0 is waiting for your help. 9th - 12th grade . True False Question 4 To sequence a piece of DNA, you need the DNA you want to sequence, a DNA primer, an enzyme called DNA polymerase, and four nucleotides. a) True b) False Question 7 Which one of the following statements regarding V max and K M is false? Tags: Question 35 . n. the enzymes that digest milk sugar probably also digests table sugar. The optimum pH of most enzymes is 6 to ___. A. True or False: Enzymes are consumed in reactions and, thus, can only be used once. True or false enzymes interact with specific substrates See answer jesz jesz True. False. enzymes are sensitive to pH and function best across a narrow range of pH. a) True b) False Question 7 Which one of the following statements regarding V max and K M is false? Return to the Biochemistry I Quiz Index.. Lecture 15: Introduction to Enzymes. True or false, An enzyme can only bind one reactant at a time. Here at Quizzcreator we have millions of questions and quizzes, So Play this quiz from here at get the full result. It cleave after Arg residues. Restriction enzymes can be used to compare different genomes based on the produced pattern of DNA fragments. 19. 6. True or false? The rate of an enzyme-catalyzed reaction is a linear function of the substrate concentration. What do enzymes do? Type b. ____________ are proteins or RNA molecules that act as catalysts to speed up reactions in living organisms. Digestion and Enzymes Quiz. 3. ... New questions in Biology. What is(are) the effect(s) of a molecule binding to an allosteric site on an enzyme? True or false? 6.Pressure increases the rates of gaseous reactions. When several enzymes that catalyze different steps of a sequence of reactions are associated with one another in a noncovalently bonded assembly, they form a(n). Which of the following is the best indicator that a reaction will occur spontaneously? A substance that binds to an enzyme and decreases its activity is an. Metabolic reactions are broken down into two main categories. True or false: Each step of a metabolic pathway is catalyzed by a specific enzyme. True or false? Enzyme-driven metabolic pathways can be made more efficient by. Ans. Busta Heine. Order the steps in enzyme catalysis starting at the top. The active site is -> a specific site on an enzyme where only a particular substrate will bind. START QUIZ. A reactant molecule that binds to the active site of an enzyme. __________ enzymes are enzymes that can exist in either an active or inactive conformation. Click here to get an answer to your question ️ Photosynthesis required enzymes true or false sanjayyadav5367 sanjayyadav5367 09.06.2018 Biology Secondary School Photosynthesis required enzymes true or false 2 See answers 8109619168 8109619168 SURVEY . True False Question 3 A map of restriction enzymes can be generated by cutting DNA with different combinations of restriction enzymes. That is, an enzyme will catalyze reactions of one molecule only. 3. QUIZ NEW SUPER DRAFT. I post things that are finished and that work. False. Name the 4 nucleotide bases. An enzyme specifically activate and accelerate the rate of a reaction. To play this quiz, please finish editing it. True or false: Each step of a metabolic pathway is catalyzed by a specific enzyme. Pepsinogen is secreted by the chief cells of the stomach. What is the specificity of the Clostripain protease? 2. Select the reasons why changing the pH of the fluid in which a human enzyme is dissolved (for example to a pH of 3) will affect the enzyme's ability to function. Coenzymes, like enzymes, can be reused and recycled without changing reaction rate or effectiveness. Type b. Select the statements that accurately describe multienzyme complexes. If they do work and you like them then please comment too. QUIZ NEW SUPER DRAFT. Enzymes whose concentration in a cell is depend­ent of an added inducer are termed constitutive enzymes. False. Anabolic reactions are involved in the synthesis of larger molecules from smaller precursor molecules. REVIEW QUESTIONS FOR ENZYME KINETICS: ANSWERS, continued 7. True or false? true . True False Question 3 A map of restriction enzymes can be generated by cutting DNA with different combinations of restriction enzymes. (vii) The pyruvate kinase catalyzed step is a reversible reaction in glycolysis, allowing gluconeogenesis to procede via the same enzyme. A substance that binds to an enzyme in a way which results in a decrease of enzyme activity is called a(n) _____________. Enzyme reactions can be slowed or halted using inhibitors. The right answer is False. true In __________ inhibition, the end product of a pathway affects the first enzyme in the series to shut down the pathway. True False OK Question Title * 3. A- Substrate B-active site C- enzyme D- products. True. Enzymes Practice Test. Questions; Chemistry. * - 21161321 mcgaughyem07 mcgaughyem07 5 minutes ago Biology ... New questions in Biology. Enzymes are: Proteins. Complete: Right: Wrong: Clock << >> Change answer: Q. 3. __ true _____ Enzymes interact with many different substrates. 4 years ago by . Based off of its name, which one of the following proteins do you think is an enzyme? FALSE c. d. e. 4. Enzymes True or False Quiz. answer choices . Indicate whether each of the following is true or false. True False OK Question Title * 3. * - 21161321 mcgaughyem07 mcgaughyem07 5 minutes ago Biology ... New questions in Biology. Only tell me if you are definatly sure. registered in England (Company No 02017289) with its registered office at 26 Red Lion True. Glucose + Glucose. a. Rate c. Reactants d. Product e. Yield 3. Enzymes are special types of: a. Catalysts b. Proteins c. Organelles d. Both a and b e. All of the Above 2. 4 1 customer reviews. True or false ? a. True or false ? -By regulating metabolic pathways, cells waste less energy. false. Busta Heine. True or false? Thanks. 2. -> Importing True False 9. True or false: Substances can bind to an enzyme and change its shape, affecting its activity. In the earliest cells, the first catalyzed chemical reactions were probably reactions composed of how many steps? True or false? The enzyme is not modified during the reaction (it doesn't get used up). 8. True or false? TRUE b. The answer is false. True. Which of the following acts as an inhibitor of the first enzyme reaction in a metabolic pathway during feedback inhibition. QUESTIONS: 1. They are proteins present in the living organisms and they reduce the rate of reaction by hastening the reaction process. Enzymes change shape after a reaction occurs. A- Substrate B-active site C- enzyme D- products. true . True or False: Enzymes are designed for very specific chemical reactions. True or False? Select the true statements about allosteric sites on enzymes. IELTS True False Not Given Tips for Reading. True. Complete: Right: Wrong: Clock << >> Change answer: false . Enzymes are special types of: a. Catalysts b. Proteins c. Organelles d. Both a and b e. All of the Above 2. What happens if a chemical substance binds to an enzyme and alters its shape? Pepsin is an enzyme found in the stomach that functions best at an acidic pH. SURVEY . Enzymes speed up reactions . Preview. ENZYMES Multiple Choice Questions :-1. ______________ enzymes are enzymes that can exist in either an active or inactive conformation. True or false, An enzyme speeds up a chemical reaction in the cell, but can only be used once. (catabolic or anabolic) ells harvest energy during _______ reactions and expand energy during _________ reactions. true . 18. About this quiz: All the questions on this quiz are based on information that can be found at Biology: Enzymes. true. true. Add your answer and earn points. What is produced by the binding of enzyme and substrate? START QUIZ. What organic molecules can accept electrons from the active site of one enzyme and then transfer them to another enzyme where the electrons are released to a substrate in a different reaction? Subject: Biology. Only you will know that all the answers are true… From source website: To catalyze a reaction, an enzyme will grab on (bind) to one or more reactant molecules. Enzymes. Organic molecules that temporarily attach to an enzyme and promote a chemical reaction without being changed during the reaction. True or false: Biochemical pathways evolved quickly over time. __________ are small chemical components, usually inorganic ions, such as Zn2+, Cu2+, and Mn2+, that are often found in the active site participating directly in catalysis. The ____________ site is a specific region of an enzyme to which non-competitive inhibitors bind in order to regulate enzyme activity. Here you can create your own quiz and questions like Enzymes are protein catalysts. Select the true statements about the effect of temperature on an uncatalzyed chemical reaction. The correct answer to this question is yes, enzymes are protein catalysts. Enzymes are: Proteins. Enzymes are protein-based compounds that facilitate specific chemical reactions in living organisms. A molecule that binds to a site other than the active site of an enzyme and inhibits the enzyme's function. o. An apoenzyme is present in all holoenzymes. True False Question 4 To sequence a piece of DNA, you need the DNA you want to sequence, a DNA primer, an enzyme called DNA polymerase, and four nucleotides. answer choices . Cells, nutrition, and animals Dna the molecule Enzyme Quiz. 4.Reactions slow down if diluted. -They can exist in either active or inactive form. Quickly memorize the terms, phrases and much more. ___________ inhibitors bind to the active site of an enzyme and prevent the substrate from binding. If the statement is false, explain why. -Enzymes cannot maintain their three-dimensional shape at extreme pHs, such as a pH of 3. One enzyme can be used for many different types of chemical reactions. What is an enzyme? London WC1R 4HQ. Select the statements that correctly describe differences between anabolic and catabolic reactions. This test consists of 28 questions of the same from section 1.4 of the book. True or false ? k. enzymes are often named by adding -ase to the kind of molecule or reaction they influence. What is the optimal pH range for most human enzymes? __ false _____ Enzymes change shape after a reaction occurs . True or false: 1. Why do most enzymes function maximally in a narrow range of temperature? False. It can be affected by substances which bind the enzyme and alter its shape. True or false? How many different kinds of enzymes are known in total? true In __________ inhibition, the end product of a pathway affects the first enzyme in the series to shut down the pathway. True or False: Enzymes can be used over and over in a reaction. A calorimeter tests for the energy stored in a food 5. Select the ways in which multienzyme complexes improve catalytic efficiency. True Question 2 True or False: Enzymes slow down chemical reactions to conserve energy. Select the true statements about allosteric enzymes. Pepsinogen is the inactive form of pepsin that must be activated by stomach acid and pepsin. Restriction enzymes can be used to compare different genomes based on the produced pattern of DNA fragments. How does feedback regulation regulate enzyme activity? These molecules are the enzyme's substrates. During the reactions, the enzyme changes shape and cannot be used again. -Enzymes may be used more than once in a cell. What is the term that describes how an enzyme and substrate wander around the aqueous environment of a cell in search of each other? Active enzymes change substrates into the products an organism needs to carry out essential functions, whether chemical or physiological. The correct answer to this question is yes, enzymes are protein catalysts. True or false? True or false? True or false, An enzyme speeds up a chemical reaction in the cell, but can only be used once. _______ are small organic molecules that temporarily attach to an enzyme and promote a chemical reaction without being changed during the reaction. The optimum temperature for an enzyme is the temperature where the enzyme has the ____ energy 9. All enzymes are specific to a single substrate chemical. True or false? Preview this quiz on Quizizz. Age range: 14-16. true . Increasing the temperature outside the optimal range for an enzyme can lead to _________ of the enzyme, altering the enzyme's structure and function. alternatives . What type of reactions are involved in the synthesis of larger molecules from smaller precursor molecules? True or false? False. m. enzymes can change the equilibrium concentrations of reactants or products. What binds to the active site of an enzyme? True or False: Enzymes are fatty acid catalysts; A) False B) True. Which of the following is an accurate description of a coenzyme? 4 years ago by . A substance that binds to an enzyme and decreases its activity is called a(n). Enzymes speed up reactions. Questions; Chemistry. Biology. A(n) _________________ inhibitor binds to an area outside of the active site of an enzyme and impairs proper functioning of the enzyme. That is, an enzyme will catalyze reactions of one molecule only. Which of the following is true about the regulation of enzyme activity in cells? a) V max is the maximum rate at which a particular enzyme-catalysed reaction can proceed. Our customer service team will review your report and will be in touch. k. enzymes are often named by adding -ase to the kind of molecule or reaction they influence. It cleave after … 3. A substrate. 2. false . Square This quiz is based on the content within the Nelson Biology 12 textbook. When a reactant binds to the active site of an enzyme, a(n) ___________-____________ complex forms. Catabolic reactions release energy, while anabolic reaction need energy input. How does temperature affect the functioning of an enzyme? Like this as an enzyme starter activity. Changes in pH affect an enzyme because the interaction of charged amino acid residues in the enzyme are affected by. Answer: 2 question Enzymes are typicaly carbohydrates. Restriction enzymes cut DNA randomly. Handy starter printed on two sheets to reduce to A5 on printing. 17. a. How do enzymes speed up chemical reaction? Which of the following statements best describes an allosteric inhibitor? True or false ? -> ΔG < 0 True False 9. An enzyme is a protein with catalytic properties. 1. -> Importing True False 9. Enzymes change the _____ of a chemical reaction. In many oxidation-reduction reactions, electrons pass in pairs from the active site of the enzyme to a(n) ____________ that serves as an electron acceptor, which can then release the electrons to the substrates of another reaction. Digestion and Enzymes Quiz. A cofactor is a small chemical component that assists an enzyme during the catalysis reactions. An allosteric _________ binds to a site in the enzyme other than the active site and by doing so it keeps the enzyme in its active configuration. your goal is to determine the function, if any, of male color patterns in collared lizards, using the scientific method. True. FALSE c. d. e. 4. A substrate. 10. 4. In some reactions, one substrate is broken down into multiple products. Restriction enzymes cut DNA randomly. male collared lizards show considerable color variation, ranging from brightly colored to a very dull pattern. In catalyzed reactions, the reactants are converted into products much slower than they would without a catalyst. a) V max is the maximum rate at which a particular enzyme-catalysed reaction can proceed. Resource type: Game/puzzle/quiz. * True or False QUESTIONS: 1. n. the enzymes that digest milk sugar probably also digests table sugar. Temperature and pH can greatly affect the function of some enzymes by causing denaturation. True False Question 4 1 pts lactose is The repressor protein encoded by the regulatory gene of the lac operon binds the operator wh scarce. Rate c. Reactants d. Product e. Yield 3. Restriction enzymes recognize specific sequences on DNA and always cuts so that only blunt ends are produced. During each step of the metabolic pathway that adds phosphate groups to various sugars, a separate _________ is needed to catalyze the reaction. Each ________ in a biochemical pathway acts on the products of the previous reaction. alternatives . True or false? A quiz to test your knowledge! Enzymes interact with specific substrates . And give a general example. l. only a few enzymes are required to keep the typical living cell alive and functioning normally. Enzymes Practice Test. Student: The substrate binds to a particular site on the enzyme to which it is attracted. Only you will know that all the answers are true, some look outlandish but they are real. 2.Reations slow if catalysts are used. false. True. Inhibitors that bind to the active site of an enzyme preventing the binding of substrates are. Describe the concept of the metabolic pathway. -Enzymes in multienzyme complexes catalyze a sequence of reactions. When an enzyme gains a coenzyme, it then becomes a holoenzyme, or active enzyme. ... * True or False pls help its easy 6th grade science one question Enzymes are typicaly carbohydrates. b. Ans. Most human enzymes function best between 35 and 40οC, while the enzymes of bacteria that inhabit hot, sulfur springs have a higher ________ temperature. Select the statements that accurately describe cellular enzymes. False. They lower the activation energy of a reaction by binding to the substrates. How can the functioning of an enzyme be affected by the external environment? Most enzymes in the human body work best at neutral pH. True or False, Enzymes are temperature and pH dependent. 3491 plays. Sucrose is a disaccharide composed of 2 monosaccharides: 1 glucose molecule and 1 fructose molecule. True . Conditions. One enzyme can be used for many different types of chemical reactions . Report this resourceto let us know if it violates our terms and conditions. TRUE b. Enzymes change shape after a reaction occurs. I make resources when I can't find anything that works in the way which I want it to. To play this quiz, please finish editing it. Student: The substrate binds to a particular site on the enzyme to which it is attracted. answer choices . * True or False Question 6 Enzyme-catalysed reactions do not involve a transition state. From source website: To catalyze a reaction, an enzyme will grab on (bind) to one or more reactant molecules. answer choices . Select the events that must occur before bonds in the substrate are broken during an enzyme catalyzed reaction. Preview this quiz on Quizizz. Enzymes interact with specific substrates. The metal ion in pyruvate kinase also holds one substrate (ATP) to activate it. Some things take a long time to make and to get right... so I charge a little for those. Next. ______________, or reactants, are molecules that bind to an enzyme at the active site and are converted to products in chemical reactions. 20 seconds . Compare the activation energy with and without the enzyme . Which of the following describes the active site of an enzyme? Where does a substrate bind on an enzyme in order for a chemical reaction to take place? false . Enzymes True or False Quiz. Enzyme reactions can be slowed or halted using inhibitors They catalyze chemical reactions in cells or outside the cells. Chemical reactions would take … Tags: Question 19 . Indicate whether each of the following is true or false. Sucrose is composed of ____. What are the small chemicals, usually inorganic ions, that temporarily attach to the surface of an enzyme and promote a chemical reaction? The stomach enzyme pepsin functions well at very ___ pH. For webquest or practice, print a copy of this quiz at the Biology: Enzymes webquest print page. Enzymes are protein catalysts. m. enzymes can change the equilibrium concentrations of reactants or products. Metal ions cannot be present in a cofactor. In __________ inhibition, the end product of a pathway affects the first enzyme in the series to shut down the pathway. According to the first law of thermodynamics, the change in energy in a system must be either -> positive or zero. How can some enzymes function well at a very low pH? Binding of a molecule to an allosteric site can inhibit the proper functioning of an enzyme. All enzymes are specific to a single substrate chemical. 2. The active site is -> a specific site on an enzyme where only a particular substrate will bind. A quiz to test your knowledge! A) False B) True. A. concentrating enzymes within specific cellular compartments B. grouping enzymes into free-floating, multienzyme complexes C. fixing enzymes into membranes so that they are adjacent to each other D. All of the above. True or False, Enzymes are temperature and pH dependent. One enzyme can be used for many different types of chemical reactions. If they don't work for you then let me know through the comments section and I'll try to put them right. In fact, the central role of enzymes - which are proteins or RNA - is to act as catalysts in biological reactions to increase the rate and speed of chemical reactions. Handy starter printed on two sheets that can be reduced for printing. What is the name of the enzyme that breaks down carbohydrates? Question 6 Enzyme-catalysed reactions do not involve a transition state. Sucrose is composed of ____. It is the part of the enzyme where the substrate fits. In others, two substrates come together to create one larger molecule or to swap pieces. The enzyme catalyzes a reaction by combining with a specific substrate. Question 1 True or False: Metabolism is a controlled set of biochemical reactions that occur in living organisms in order to maintain life. 18. Enzymes speed up reactions. * True or False - the answers to estudyassistant.com Ans. 1.Catalysts are specific to certain reactions. The final product of a metabolic pathway inactivates the first enzyme in the pathway by binding to its allosteric site. True or false ? Explain mathmematically how a value for Km can be obtained from the Vo vs So graph when Vo = 1/2 Vmax. True or false?