3. Inside the treasure chest, you find that whoever last left this treasure had discovered an amazing new enzyme that will revolutionize life as we know it. It’s clear from the diagram provided along with the vial that the enzyme converts a substrate (S) into a product (P), with a Ks of 5 mM. You decide to set up an experiment: you add the enzyme to an initial substrate concentration of 15 µM. You note that after 8 minutes the concentration of the substrate is halved. What is the rate constant k, the vmax and the product concentration after 14 minutes?

3. Inside the treasure chest, you find that whoever last left this treasure had discovered an amazing new enzyme that will revolutionize life as we know it. It’s clear from the diagram provided along with the vial that the enzyme converts a substrate (S) into a product (P), with a Ks of 5 mM. You decide to set up an experiment: you add the enzyme to an initial substrate concentration of 15 µM. You note that after 8 minutes the concentration of the substrate is halved. What is the rate constant k, the vmax and the product concentration after 14 minutes?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter6: Energy, Enzymes, And Biological Reactions

Section: Chapter Questions

Problem 6TYK: Which of the following methods is not used by enzymes to increase the rate of reactions? a. covalent...

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Which of the following methods is not used by enzymes to increase the rate of reactions? a. covalent bonding with the substrate at their active site b. bringing reacting molecules into close prosimity c. orienting reactants into positions to favor transition states d. changing charges on reactants to hasten their reactivity e. increasing fit of enzyme and substrate that reduces the energy of activation
1. Looking at the graph you should be able to explain every activity of every enzyme. Please describe each one of them. 1A: Why is Temperature and pH so important? When is an enzyme able to work properly
1-sketched a graph to show what I think the effect of temperature will be on the rate of reaction (the effect of temperature on enzyme activity) 2-describe in words what you predict the effect of temperature will be on the rate of reaction
1. a) Fill in the blanks: a ____________ reaction is one that requires energy input, whereas a spontaneous reaction is one that _____________ energy. A spontaneous reaction is also called an ___________ reaction, whereas an endergonic reaction requires energy input. b) Briefly, why do living cells and organisms require an input of energy? c) How do animals like humans get their energy if they cannot obtain it directly from the sun like photosynthetic organisms? How do bacteria obtain energy? d) Chemical energy is the form of energy we will discuss. Where is the chemical energy stored in a molecule of glucose?
1. Using the following data, graph percent enzyme activity on the y-axis and pH on the x-axis 2.Do these enzymes have different optimum pHs? Explain why or why not. 3. Research what specific human enzymes would best match the data.
1. What is the significance of the effect of enzyme concentration to enzyme activity in relation to the medical aspect? a. A person with fever cannot eat well and may suffer from indigestion b. A person with hyperacidicity experience vomiting upon taking milk c. Abnormal level of diagnostic enzymes indicate damage in the body tissues d. Too much hydrogen peroxide in the body forms free radicals if not decomposed by peroxidase 2. What is the relation of the effect of temperature on enzyme activity to the medical field? a. To explain the cause why a feverish person cannot eat b. To explain why drinking carbonated leaves a fizzing sensation in our tongue c. To explain the cause why milk should not be taken by hyperacidic individual d. To explain why bubbles are formed when cleaning wounds with hydrogen peroxide 3. What reaction was involved in the determination of Vitamin C content of fruits? a. Oxidation…
1. What are the differences classification of enzymes? List 5 classification of enzymes and cite their functions.
The assembly of proteins from amino acids is best described as: a. a conversion of kinetic energy to potential energy reaction. b. an entropy reaction. c. a catabolic reaction. d. an anabolic reaction. e. an energy-free reaction.
Which of the following comparisons or contrasts between endergonic and exergonic reactions is false? Endergonic reactions have a positive ?G and exergonic reactions have a negative ?G Endergonic reactions consume energy and exergonic reactions release energy Both endergonic and exergonic reactions require a small amount of energy to overcome an activation barrier Endergonic reactions take place slowly and exergonic reactions take place quickly.
Which of the following statements about inhibition is true? a. Allosteric inhibitors and allosteric activators are competitive for a given enzyme. b. If an inhibitor binds the active site, it is considered noncompetitive. c. If an inhibitor binds to a site other than the active site, this competitive inhibition. d. A noncompetitive inhibitor is believed to change the shape of the enzyme, making its active site inoperable. e. Competitive inhibition is usually not reversible.
Which of the following statements about the allosteric site is true? a. The allosteric site is a second active site on a substrate in a metabolic pathway. b. The allosteric site on an enzyme can allow the product of a metabolic pathway to inhibit that enzyme and stop the pathway. c. When the allosteric site of an enzyme is occupied, the reaction is irreversible and the enzyme cannot react again. d. An allosteric activator prevents binding at the active site. e. An enzyme that possesses allosteric sites does not possess an active site.
1) Which of these is NOT a correct statement about enzymes? Group of answer choices Enzyme activity may require a non-protein component (cofactor). Enzymes catalyze chemical reactions and are reusable. Enzymes increase the activation energy (Eact) of reactions. Enzyme activity is affected by the environment (e.g., temperature and pH).