SEELEY'S ANATOMY+PHYSIOLOGY
12th Edition
ISBN: 9781260172195
Author: VanPutte
Publisher: RENT MCG
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Textbook Question
Chapter 2, Problem 12RAC
Which of these statements concerning enzymes is correct?
- Enzymes increase the
rate of reactions but are permanently changed as a result. - Enzymes are proteins that function as catalysts.
- Enzymes increase the actiation energy requirement for a reaction to occur.
- Enzymes usually can only double the rate of a
chemical reaction . - Enzymes increase the kinetic energy of the reactants.
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Students have asked these similar questions
Which of the following is correct regarding enzymes?
Enzymes can speed up the rate of reaction by shifting the equilibrium of the reaction
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Enzymes can make a nonspontaneous reaction spontaneous.
Most enzymes are made up of DNA and RNA and are named based on the reaction that they
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Enzymes can increase the rate of a reaction, but do not shift the equilibrium of a reaction.
Which of the following statements about exergonic chemical reaction is true?
Choose only the best response.
There is a release of energy due to the breakage of high-energy bonds in the
products.
There is a release of energy due to the breakage of high-energy bonds in the
reactants.
There is a release of energy because the energy needed to form new bonds in
the products, is less than the energy released from breaking of bonds in the
reactants.
There is a release of energy because the energy needed to break bonds in the
reactants, is less than the energy released when forming new bonds in the
products.
Which of the following is/are TRUE of an enzyme?
Enzymes lower the release of free energy
Enzymes are not consumed in a reaction
Not all enzymes are proteins
Enzymes only affect endergonic reactions
Enzymes only affect exergonic reactions
Chapter 2 Solutions
SEELEY'S ANATOMY+PHYSIOLOGY
Ch. 2.1 - Define matter. How are the mass and the weight of...Ch. 2.1 - Differentiate between element and atom. What four...Ch. 2.1 - Prob. 3AYPCh. 2.1 - Which subatomic particle determines the atomic...Ch. 2.1 - What is an isotope? How are isotopes denoted?Ch. 2.1 - What is avogardro’s number? How is it related to a...Ch. 2.1 - Describe how an ionic bond is formed. What are...Ch. 2.1 - What occurs in the formation of a covalent bond?...Ch. 2.1 - Distinguish between a molecule and a compund. Give...Ch. 2.1 - What are intermolecular forces, and how do they...
Ch. 2.1 - What is meant by the statement “table sugar is...Ch. 2.1 - Describe what occurs during the dissociation of...Ch. 2.1 - Explain the difference between electrolytes and...Ch. 2.2 - Using the terms reactant and product, describe...Ch. 2.2 - Contrast synthesis and decomposition reactions,...Ch. 2.2 - Describe the role of water in dehydration and...Ch. 2.2 - What is a reversible reaction? How does this type...Ch. 2.2 - What are oxidation-reduction reactions?Ch. 2.2 - Define energy. How are potential and kinetic...Ch. 2.2 - Summarize the characteristics of mechanical,...Ch. 2.2 - Use ATP and ADP to Illustrate the release or input...Ch. 2.2 - Define activation energy, catalyst, and enzymes;...Ch. 2.2 - What effect does increasing temperature or...Ch. 2.3 - What is the difference between inorganic and...Ch. 2.3 - What two properites of water are the result of...Ch. 2.3 - List and briefly describe the four functions that...Ch. 2.3 - Prob. 27AYPCh. 2.3 - Prob. 28AYPCh. 2.3 - Prob. 29AYPCh. 2.3 - Prob. 30AYPCh. 2.3 - Prob. 31AYPCh. 2.3 - Prob. 32AYPCh. 2.3 - Prob. 33AYPCh. 2.3 - Prob. 34AYPCh. 2.3 - What are the functions of oxygen and carbon...Ch. 2.4 - Prob. 36AYPCh. 2.4 - Prob. 37AYPCh. 2.4 - Prob. 38AYPCh. 2.4 - Prob. 39AYPCh. 2.4 - Which carbohydrates are used for energy? What is...Ch. 2.4 - Prob. 41AYPCh. 2.4 - Prob. 42AYPCh. 2.4 - Prob. 43AYPCh. 2.4 - Prob. 44AYPCh. 2.4 - Prob. 45AYPCh. 2.4 - Prob. 46AYPCh. 2.4 - What are the building blocks of proteins? What...Ch. 2.4 - Prob. 48AYPCh. 2.4 - Prob. 49AYPCh. 2.4 - Compare the lock-and-key and the induced fit...Ch. 2.4 - Prob. 51AYPCh. 2.4 - What are the basic building blocks of nucleic...Ch. 2.4 - DNA is like a twisted ladder. What forms the sides...Ch. 2.4 - Prob. 54AYPCh. 2.4 - Prob. 55AYPCh. 2.4 - Prob. 56AYPCh. 2.4 - Prob. 57AYPCh. 2 - Prob. 1RACCh. 2 - Prob. 2RACCh. 2 - Prob. 3RACCh. 2 - Prob. 4RACCh. 2 - Table salt (NaCl) is an atom organic. a molecule....Ch. 2 - Prob. 6RACCh. 2 - Prob. 7RACCh. 2 - Prob. 8RACCh. 2 - Prob. 9RACCh. 2 - Prob. 10RACCh. 2 - Prob. 11RACCh. 2 - Which of these statements concerning enzymes is...Ch. 2 - Prob. 13RACCh. 2 - Prob. 14RACCh. 2 - Prob. 15RACCh. 2 - Prob. 16RACCh. 2 - A buffer slows down chemical reactions. speeds up...Ch. 2 - Prob. 18RACCh. 2 - Prob. 19RACCh. 2 - Prob. 20RACCh. 2 - Prob. 21RACCh. 2 - Prob. 22RACCh. 2 - Prob. 23RACCh. 2 - DNA molecules conatin genes. contain a single...Ch. 2 - Prob. 25RACCh. 2 - Prob. 1CTCh. 2 - Prob. 2CTCh. 2 - A mixture of chemicals is warmed slightly. As a...Ch. 2 - Two solutions, when mixed together at room...Ch. 2 - Prob. 5CTCh. 2 - Prob. 6CTCh. 2 - Carbon dioxide that accumulates in the blood can...Ch. 2 - An enzyme (E) catalyzes the following reaction:...Ch. 2 - Using the materials commonly found in a kitchen,...
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- The capacity to do work best defines: a metabolic pathway. entropy. kinetic or potential energy. a chemical equilibrium. thermodynamics.arrow_forwardEnzymes are key components in biological reactions. Which of the following statements about enzyme function in biological systems is FALSE? Enzymes are key components in biological reactions. Which of the following statements about enzyme function in biological systems is FALSE? Enzymes increase the rate of a reaction, but do not change the free energy of a reaction. Enzymes frequently work in metabolic pathways, such that the activity of one enzyme can affect the activity of a second enzyme in the pathway by altering the concentration of a substrate or product of the second enzyme. Enzymes will alter the equilibrium of a reaction such that the enzyme increases the exergonic reaction relative to the endergonic reaction. Even if the enzyme forms a bond with a substrate during a reaction, the enzyme returns to its original form at the end of the reaction.arrow_forwardHere is a chemical reaction: H₂O2 -> O2 + H₂O What is/are the reactants? What is/are the products? H₂O2 is the product while O₂ and H₂O are reactants. There are no products or reactants as an enzyme is needed for the reaction to occur. There are no products or reactants as O2 and H₂O occur in the environment. O H₂O2 is the reactant while O₂ and H₂O are productsarrow_forward
- Enzymes are biological catalysts that enhance the rate of a reaction by: stabilizing the transition state. decreasing the amount of free energy released. increasing the activation energy. increasing the amount of free energy released. O increasing the energy in the transition state.arrow_forwardWhich of the following statements is NOT true? Enzymes increase the probability that a chemical reaction will take place by lowering the activation energy The energy required to cause a chemical reaction to occur is called the activation energy Chemical reactions in living cells are catalyzed by enzymes None of the other four answers (all are true) Decomposition (degradation, catabolic) reactions are usually endergonicarrow_forwardWhich of the following statement is FALSE about enzymes? Enzymes are unconsumed during a biochemical reaction. Enzymes' denaturation cannot affect its biological activity. Enzymes speed up the rates of a biochemical reaction by lowering its activation energy. Enzymes do not alter the position of the equilibrium.arrow_forward
- MC: Which of the following are true of an enzyme? An enzyme is never needed for an exothermic reaction An enzyme works by minimizing the AG An enzyme is never consumed in a reaction An enzyme is not always a proteinarrow_forwardWhich of the following statements are incorrect? Enzymes and inorganic catalysts speed up reactions. Enzymes and inorganic catalysts are non-specific. Enzymatic activity can be regulated. Enzymes undo allosteric change and inorganic catalysts cannot.arrow_forwardWhich of the following is NOT true about enzymes? Enzymes are proteins Enzymes raise the activation energy of a chemical reaction Enzymes help a chemical reaction to occur more quickly Enzymes have an active site Enzymes may be controlled by feedback inhibitionarrow_forward
- Homeostasis is important for all of the functions of the human body. Why is maintaining homeostasis important for enzymes? Group of answer choices: To maintain their normal structure and function To prevent substrate from binding to the enzyme To allow the substrate to bind forever To cause the enzyme to fold differently for each reactionarrow_forwardThe velocity of a reaction is the quantity of the: solution color that disappears in a specified unit of time. reactant that appears in a specified unit of time. reactant that disappears in a specified unit of time. (or product that appears) solution color that appears in a specified unit of time. product that disappears in a specified unit of time.arrow_forwardAmylase is an enzyme found in saliva that breaks down starch. The enzyme is currently functioning at its optimal pH of 7 and optimal temperature of 32oC. Which of the following could result in an increase in the reaction rate? Providing an environment with a pH of 9. Decreasing enzyme concentration. Placing the reactants in an environment at 10oC. Increasing substrate concentration.arrow_forward
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