Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 2, Problem 14TYK
Summary Introduction
To explain:
The substance that can be added to the reaction mixture to maintain a high activity of the enzyme, with the reason for the same.
Introduction:
The acidic or basic character is expressed in terms of pH (potential of hydrogen). It is a negative logarithm of the concentration of
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enzymes 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).
Predict the missing reactant of this biochemical reaction:
X + Pi
P-O
+ H₂O
That is, in the drawing area below, draw the chemical structure of the reactant molecule X.
Note for advanced students: you can assume any necessary small-molecule reactants, like water, are available.
Click and drag to start drawing a
structure.
X
:0
Ś
Based on the given question which of the following choices is the correct answer?A. The enzyme's activity continually increases as pH increases from 5.0 to 9.0B. The optimum pH of the enzyme is 5.8C. The optimum pH of the enzyme is 6.6D. The enzyme's activity is greater around pH of 8.0 than around pH of 5.0
Chapter 2 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 2.1 - Distinguish between an element and an atom, and...Ch. 2.2 - Prob. 1SBCh. 2.2 - Prob. 2SBCh. 2.2 - Prob. 3SBCh. 2.3 - Prob. 1SBCh. 2.3 - Prob. 2SBCh. 2.3 - Prob. 3SBCh. 2.3 - Prob. 4SBCh. 2.4 - Prob. 1SBCh. 2.4 - Prob. 2SB
Ch. 2.5 - Prob. 1SBCh. 2.5 - Why are buffers important for living organisms?Ch. 2 - Which of the following statements about the mass...Ch. 2 - Oxygen (O) is a(n) _______; the oxygen we breathe...Ch. 2 - The chemical activity of an atom: a. depends on...Ch. 2 - When electrons are shared equally between atoms,...Ch. 2 - Which of the following is not a property of water?...Ch. 2 - The water lattice: a. is formed from hydrophobic...Ch. 2 - A hydrogen bond is: a. a strong attraction between...Ch. 2 - Apply Evolutionary Thinking What properties of...Ch. 2 - If pond water has a pH of 5, the hydroxide...Ch. 2 - Prob. 10TYKCh. 2 - Prob. 11TYKCh. 2 - Prob. 12TYKCh. 2 - Discuss Concepts You place a metal pan full of...Ch. 2 - Prob. 14TYKCh. 2 - Prob. 15TYKCh. 2 - The pH of human stomach acid ranges from 1.0 to...Ch. 2 - Prob. 2ITDCh. 2 - Prob. 3ITD
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- Enzyme kinetics uses math to quantify all of the following, except: a. An enzyme's substrate affinity b. None; all the other choices are correct OC. An enzyme's catalytic power Od. An enzyme's stabilityarrow_forwardHow does the average reaction rate differ from an instantaneous reaction rate? © A. The average reaction rate is how quickly the reaction proceeds over time. An instantaneous reaction rate is how quickly the reaction proceeds at a specific time. B. The average reaction rate is how quickly the reaction proceeds at a specific time. An instantaneous reaction rate is how quickly the reaction proceeds over time. C. The average reaction rate is how quickly the reaction proceeds over time considering the reactants. An instantaneous reaction rate is how quickly the reaction proceeds at a specific time considering the products. D. The average reaction rate is how quickly the reaction proceeds over time. An instantaneous reaction rate is how quickly the reaction proceeds compared to another reaction.arrow_forwardCalculate the change in enthalpy and the change in entropy for the above reaction. Please indicate which number is entropy and which is enthalpy in your answer Please show your calculations so I can understand what you didarrow_forward
- Chemistry (True / False) A researcher speculates that an enzyme has the following energy profile and that it is a reasonable profile given what we know about enzyme behavior. Enzyme bound to Substrate: -7.00 kcal/mol Enzyme bound to Product: -10.00 kcal/mol Enzyme in transition state: -5.00 kcal/mol Why would the answer be false?arrow_forwardPredict the missing reactant of this biochemical reaction: anatate.. CH3 C CH₂¯ X Pi + H₂O That is, in the drawing area below, draw the chemical structure of the reactant molecule X. Note for advanced students: you can assume any necessary small-molecule reactants, like water, are available. Click and drag to start drawing a structure. X :0 Śarrow_forwardFind kcat for a reaction in which Vmax is 4 × 10-4 mol•min-1 and the reaction mixture contains one microgram of enzyme (the molecular weight of the enzyme is 200,000 D). Show your work/reasoning.arrow_forward
- Consider the following process: NaCl(s) water−→−−water→ Na+(aq) + Cl-(aq); ΔH = +4.2 kJ/mol Under what conditions (temperature) would you expect this process to be spontaneous? Select a relatively high temperature and a relatively low temperature, calculate (estimate) the relative values of ΔG to support your conclusion. The entropy increases in this process Please insert an image of your workarrow_forwardWhich statements are true and which are false? Modify each false statement so that it reads correctly. a. In a closed system, neither energy nor matter is exchanged with the surroundings. b. State functions are independent of the pathway. c. A process is isothermic if ΔH = 0. d. The sign and magnitude of ΔG give important information about the direction and rate of a reaction. e. At equilibrium, ΔG = ΔG°. f. For two reactions to be coupled, they must have a common intermediate.arrow_forwarduce the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions The reverse of this reaction is always spontaneous but proceeds slower at temperatures below 132. °C. AH is (pick one) AS is (pick one) His (pick one) B This reaction is endothermic. AS is (pick one) This reaction is spontaneous except below 110. °C but proceeds at a slower rate below 135. °C. AH IS (pick one) AS is (pick one)varrow_forward
- I’m not sure which answer would be standard conditions can you please help?arrow_forwardDefine the following terms:a. exergonic reactionb. endergonic reactionc. phosphoryl group transfer potentiald. dissipative systeme. phosphoanhydride bondarrow_forwardA. Will decreasing the amount of energy needed to make an exergonic reaction occur cause the reaction to be more exergonic? Why or why not? B. Will such an energetic alteration change the rate of the reaction? Why or why notarrow_forward
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