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 6.5, Problem 3SB
Summary Introduction
To review:
The reason for the fact that the activity of enzyme decreases to zero as the temperature increases.
Introduction:
The catalytic properties of an enzyme are based on the binding of substrate to the active site on the enzyme that mediates the process of catalysis. The physiological variables, such as pH, temperature and oxygen concentration, greatly alter the activity of an enzyme. The temperature at which the maximum catalytic function of an enzyme can be observed is called the pH optima.
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List two means by which enzyme activity is directly regulated.
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Chapter 6 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 6.1 - Prob. 1SBCh. 6.1 - In thermodynamics, what is meant by an isolated...Ch. 6.2 - Prob. 1SBCh. 6.2 - Prob. 2SBCh. 6.2 - Distinguish between exergonic and endergonic...Ch. 6.3 - Prob. 1SBCh. 6.3 - How are coupled reactions important to cell...Ch. 6.4 - How do enzymes increase the rates of the reaction...Ch. 6.4 - Can enzymes alter the G of a reaction?Ch. 6.5 - Prob. 1SB
Ch. 6.5 - What is the difference between competitive and...Ch. 6.5 - Prob. 3SBCh. 6.6 - Prob. 1SBCh. 6 - The capacity to do work best defines: a metabolic...Ch. 6 - The assembly of proteins from amino acids is best...Ch. 6 - When two glucose molecules react to form maltose:...Ch. 6 - When glucose reacts with ATP to form...Ch. 6 - In the following graph: A represents the product....Ch. 6 - Which of the following methods is not used by...Ch. 6 - In an enzymatic reaction: a. the enzyme leaves the...Ch. 6 - Which of the following statements about the...Ch. 6 - Which of the following statements about inhibition...Ch. 6 - Which of the following statements is incorrect? a....Ch. 6 - Prob. 11TYKCh. 6 - Discuss Concepts Trace the flow of energy through...Ch. 6 - Prob. 13TYKCh. 6 - Prob. 14TYKCh. 6 - Prob. 15TYKCh. 6 - Prob. 16TYKCh. 6 - Prob. 17TYKCh. 6 - Prob. 1ITDCh. 6 - Prob. 2ITDCh. 6 - Prob. 3ITD
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- If the cells of your body oxidize 1 mole of glucose, by how much would the temperature of your body (assume that your body consists of 75 kg of water) increase if the heat were not dissipated into the environment?arrow_forwardHow many ATP are made during the transition reaction step per glucose?arrow_forwarda) Describe a specific chemical reaction that occurs within the human body and state the name of the enzyme involved, the substrate(s) of the reaction, and the specific product(s) formed. b) Enzymes are not used up in chemical reactions. So, what exactly does an enzyme do? In your answer you should refer to activation energy. c) Explain what is meant by the induced fit action of an enzyme, referring to the role of the active site, and to the activation energy of an enzyme-catalysed reaction.arrow_forward
- Discuss the following statement: “enzymes and heat are alike in that both can speed up reactions that—although thermodynamically feasible—do not occur at an appreciable rate because they require a high activation energy. diseases that seem to benefit from the careful application of heat—in the form of hot chicken soup, for example—are therefore likely to be due to the insufficient function of an enzyme.”arrow_forwarda) What is the Steady State assumption; how does steady state differ from equilibrium? b) Transition state; what are two ways that enzymes can decrease the transition state energy?arrow_forwardWhy do some reactions in metabolic pathways occur, even though the change in standard free energy is positive?arrow_forward
- Indicate whether each of the following processes would be expected to involve the conversion of ATP to ADP or the conversion of ADP to ATP. a) Heart muscle contraction b) transport of nutrients to various locations in the bodyarrow_forwardWhat general effects would you expect the following changes to have on the rate of an enzyme-catalyzed reaction for an enzyme that has its maximum activity at body temperature (about 37 °C/310.15 K)?(a) Raising the temperature from 310 K (37 °C) to 343 K (70 °C)(b) Lowering the pH from 7 to 3(c) Adding an organic solvent, such as methanolarrow_forwardHow many ATP are made from one (1) molecule of glucose during anaerobic cellular respiration (AKA fermentation)?arrow_forward
- During the complete catabolism of one molecule of glucose, a typical cell gains: (a) 4–6 ATP. (b) 18–20 ATP. (c) 30–32 ATP. (d) 90–96 ATP.arrow_forwardDo enzymes use ATP?arrow_forwardDetermine the class of enzyme that is most likely to catalyze each of the following reactions, see bottom Figure 6D:arrow_forward
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