EBK HUMAN BIOLOGY
8th Edition
ISBN: 8220102019683
Author: Johnson
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 13TY
Which of the following is true regarding enzymes?
a. The synthesis of an enzyme involves hydrolysis reactions.
b. Enzymes provide energy for biochemical reactions.
c. One enzyme can catalyze many different types of reactions.
d. The instructions for the synthesis of an enzyme are found in DNA.
e. Each enzyme molecule can be used only once.
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Students have asked these similar questions
Which of the following statements is true of all enzymes?
A
They are soluble in water.
B
They have a quaternary structure.
They have only one active site.
D They catalyse anabolic reactions.
C
Which of the following statements about enzymes or their function is true?
Select one:
a. Enzymes are permanently modified during a biochemical reaction.
O b. Enzymes act as catalysts.
c. Enzymes modify reactions thermodynamic equilibrium.
O d. Enzymes increase the activation energy required for a biochemical reaction to occur.
Characterization of enzyme activity does not allow us to:
a. determine how different variables affect the enzyme's ability to function
b. determine the molecular composition of the enzyme
c. determine the optimal environment for an enzyme to function
d. determine the effect of inhibitors on the enzyme
Chapter 2 Solutions
EBK HUMAN BIOLOGY
Ch. 2 -
1. Who do you think should be responsible for...Ch. 2 - Prob. 2QCCh. 2 - Describe the electrical charges and relative...Ch. 2 -
2. Explain why two atoms of hydrogen tend to...Ch. 2 -
3. Explain why polar and charged molecules tend...Ch. 2 - How is a covalent bond different from an ionic...Ch. 2 - Compare and contrast potential energy and kinetic...Ch. 2 - Distinguish between saturated and unsaturated...Ch. 2 - Describe the process known as dehydration...Ch. 2 - Explain why proteins come in an almost unlimited...
Ch. 2 -
9. Discuss the importance of enzymes in living...Ch. 2 -
10. Describe the role of ATP in energy transfer...Ch. 2 - If a molecule of starch is repeatedly hydrolyzed,...Ch. 2 - Which of these molecules would be described as...Ch. 2 -
3. _______bonds form between the oxygen and...Ch. 2 - 13C and 14C are ______ of carbon. a. isotopes b....Ch. 2 - Which of the following substances has the lowest...Ch. 2 - When sugar is dissolved in water, sugar is the...Ch. 2 - A monosaccharide is to a polysaccharide as an...Ch. 2 -
8. Which of these bonds is the easiest to...Ch. 2 -
9. The primary structure of a protein is...Ch. 2 -
10. DNA ultimately contains the instructions for...Ch. 2 - If one strand of DNA has the sequence...Ch. 2 - Which of the following is true regarding the...Ch. 2 -
13. Which of the following is true regarding...Ch. 2 - Synthesis of proteins requires the input of...Ch. 2 - Prob. 15TYCh. 2 - Prob. 1AWKCh. 2 - Prob. 2AWKCh. 2 - Many people use cholesterol-lowering drugs to...Ch. 2 - Prob. 4AWKCh. 2 -
5. Coca-Cola is a very acidic drink; its pH is...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following statements concerning enzymes is TRUE? a. Enzymes can increase the equilibrium constant of a reaction by 1000-fold. b. The activity of many enzymes can be regulated. c. Many enzymes are consumed in the reactions they catalyze. d. The rate of enzymatic catalysis is independent of pH.arrow_forwardWhich one of the following statements is true of enzyme catalysts? a. Their catalytic activity is independent of pH. b. They are generally equally active on D and L isomers of a given substrate. c. They can increase the equilibrium constant for a given reaction by a thousand fold or more. d. They can increase the reaction rate for a given reaction by a thousand fold or more. e. To be effective, they must be present at the same concentration as their substrate.arrow_forwardWhich of the following statements is not true about enzymes?* A. Enzymes are biological catalysts B. Enzymes as catalysts lowers the activation energy thus, speeds up the rate of reaction C. Enzymes are proteins D. Enzymes are highly specific E. None of the given optionsarrow_forward
- If the environmental temperature gets too high, what will happen to an enzyme and the chemical reaction it catalyzes? Group of answer choices A. It will not encounter its substrates often, and the reaction will slow down. B. It will crystallize, the active site will become inflexible and slow down the reaction. C. It will denature, lose its shape, and the reaction will not occur. D. It will become less fluid, and be unable to transport substances easily. E. It will become more fluid, and speed up the reaction.arrow_forwardEnzymes can be regulated in a many different ways. Covalent modification is one way. Here, the functional groups are attached to or removed from the enzyme. A phosphate group is an example of a functional group that can be added to an enzyme. Depending on the enzyme, addition of a phosphate group can either increase or decrease an enzyme's activity. Evaluate the following names and identify the general name of an enzyme that functions to add phosphate groups to its substrate? A. isomerase B. phosphatase C. kinase D. ligasearrow_forwardEnzymes work by at least three mechanisms. Which of the following is NOT a mechanism by which enzymes function? A. by putting reactants in close proximity to each other. B. by altering the free energy ( ΔG) of the reaction. C. by orienting the reactants so they are positioned to favour the transition state. D. by altering the immediate environment of the reactants to promote reactant interactions.arrow_forward
- Which of the following statements about allosteric enzyme regulations are true. A. Allosteric regulations is always used to negatively regulate enzyme activity. B. Allosteric regulations are often end products of a biochemical pathway. C. Diffrent allosteric regulators turn enzyme activity on or off by binding the same site. D. Binding of allosteric regulators alters the conformation of an enzyme. B only B and C B and D D only A and Darrow_forwardThe following statements are either True or False. Please label accordingly. a. L-Amino reductase is an enzyme. b. Allosteric enzymes are composed of two or more protein chains. Heavy metals are examples of inhibitors. They function by binding to sulfur on cysteine amino acid residues. C. d. A reversible noncompetitive inhibitor temporarily blocks an enzyme's active site. Enzymes don't denature as easily as smaller proteins when heated or stressed due to their complex secondary and tertiary structure. e. Oxidative phosphorylation is the biochemical process by which ATP is synthesized from ADP when protons cross the inner mitochondrial membrane. f. g. DNA and RNA strands differ only in the fact that DNA forms a double helix. h. There is no secondary structure in RNA strands.arrow_forwardenzymes are naturally occurring catalysts responsible for various biochemical reactions. Give a modern and recent application of an enzyme used in a biochemical reaction a - the commercial or trade name of the catalyst and enzyme. b - the properties of the catalyst and enzyme (e.g., shape, size, colour, price). c - the advantages and the disadvantages of the chosen catalyst and enzyme d - catalytic reaction (e.g., the reactant, product, reaction equation, phase, selectivity, promoter, catalyst support, operating temperature & pressure).arrow_forward
- proteins function to give structure to the body, regulate processes, provide protection, help muscles to contract,transport substances and serve as enzymes. As enzymes,proteins serves to: a.Lower the activation energy of biochemical reactions b.speed up biochemical reactions c.orient colliding molecules d.all of the above e.only two of the abovearrow_forwardINSTRUCTIONS - Answer the following multiple-choice questions and EXPLAIN in 3-5 sentences why you chose that answer. Answer properly -arrow_forwardThe concept of “induced fit” refers to the fact that: a. enzyme specificity is induced by enzyme-substrate binding. b. enzyme-substrate binding induces an increase in the reaction entropy, thereby catalyzing the reaction. c. enzyme-substrate binding induces movement along the reaction coordinate to the transition state. d. substrate binding may induce a conformational change in the enzyme, which then brings catalytic groups into proper orientation. e. when a substrate binds to an enzyme, the enzyme induces a loss of water (desolvation) from the substrate.arrow_forward
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