Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Chapter 4, Problem 25RA
Summary Introduction
To review:
The pH (potential of hydrogen) values of half maximal activity of pepsin.
Introduction:
Enzymes catalyse the biochemical reactions to speed up the product formations. Most of the enzymes are protein in nature. The enzymes require optimum temperature and pH to perform efficiently. The rise in temperature results the in degradation of the enzyme and the low temperature inactivates the enzymes.
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Chapter 4 Solutions
Human Physiology
Ch. 4 - Use the lock-and-key model to explain how enzymes...Ch. 4 - Explain how enzymes are named, and the nature of...Ch. 4 - Draw graphs to represent the effects of changes in...Ch. 4 - Prob. 4CPCh. 4 - Prob. 5aCPCh. 4 - Prob. 5bCPCh. 4 - Prob. 5cCPCh. 4 - Prob. 6aCPCh. 4 - Define the terms exergonic reaction and endergonic...Ch. 4 - Prob. 7aCP
Ch. 4 - Prob. 7bCPCh. 4 - Which of these statements about enzymes is...Ch. 4 - Which of these statements about enzyme-catalyzed...Ch. 4 - Which of these statements about lactate...Ch. 4 - In a metabolic pathway, a. the product of one...Ch. 4 - In an inborn error of metabolism,
a. a genetic...Ch. 4 - Which of these represents an endergonic...Ch. 4 - Which of these statements about ATP is true? a....Ch. 4 - When oxygen is combined with 2 hydrogens to make...Ch. 4 - Enzymes increase the rate of chemical reactions...Ch. 4 - According to the law of mass action, which of...Ch. 4 - Explain the relationship between an enzyme's...Ch. 4 - Explain how the rate of enzymatic reactions may be...Ch. 4 - Explain how end-product inhibition represents a...Ch. 4 - Prob. 14RACh. 4 - The coenzymes NAD and FAD can "shuttle" hydrogens...Ch. 4 - Prob. 16RACh. 4 - Why do we need to eat food containing niacin and...Ch. 4 - Metabolic pathways can be likened to intersecting...Ch. 4 - Prob. 19RACh. 4 - Suppose you come across a bottle of enzyme tablets...Ch. 4 - Describe the energy transformations that occur...Ch. 4 - Use the reversible reactions involving the...Ch. 4 - Use the graph here and in figure 4.4 to answer the...Ch. 4 - Use the graph here and in figure 4.4 to answer the...Ch. 4 - Prob. 25RACh. 4 - Prob. 26RACh. 4 - Prob. 27RA
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- How do bile acids aid in the digestion of lipids? (Give a detailed answer.)arrow_forwardexplain (the process and name of the enzyme) in the metabolism of amino acids from the stomach, small intestine to the mitochondria of the liverarrow_forwardWhich products of fat hydrolysis would cause a change in pH of the whole milk sample? Why does a person with a low production of stomach HCl have difficulty with protein digestion? Write the equation for the action of Pancreatin (lipase) on a molecule of Tristearin.arrow_forward
- Give typing answer with explanation and conclusion Which activity results from the action of hydrochloric acid on protein in the stomach? a. Denaturation b. Condensation c. Decreased enzyme activity d. Increased alkalinityarrow_forwardMatch the terms transamination and deamination to the following? A. An amino acid group is removed from an amino acid and donated to a ketogenic acid. B. An ammonium ion is produced C. New amino acids are synthesized from other amino acids D. A ketogenic acid is produced from an amino acidarrow_forwardbriefly explain how a glucose molecule from a starch molecule in food is absorbed by a muscle cellarrow_forward
- How does a ketogenic diet decrease the level of urea in obese patients and increase the level of creatine in obese patients? (explain on a molecular level)arrow_forwardExplain why fish is susceptible to infectious diseases when the diet is deficient in essential fatty acidsarrow_forwardThe activity of pepsin was measured at various pH values. When the temperature and the concentrations of pepsin and substrate were held constant, the following activities were obtained: pH Activity 1.0 0.5 1.5 2.6 2.0 4.8 3.0 2.0 4.0 0.4 5.0 0.0 Predict the activity of pepsin in the blood at pH 7.4.arrow_forward
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