1 SEM ACC W/RAVEN CARDED
12th Edition
ISBN: 9781265486297
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 46, Problem 4S
Unlike many cases of convergence (see section 47.5), ruminants and langur monkeys have modified the enzyme lysozyme in the same wayto achieve the same end result. Why might this case be different?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Congenital sucrase-isomaltase deficiency (CSID) is a genetic condition that prevents the metabolism of cane sugar (sucrose). This condition can result in, among other things, abdominal cramps and bloating, diarrhea, vomiting, and increased susceptibility to upper respiratory tract infections.
A) Suggest a possible molecular mechanism underlying this condition.
B) Based on the mechanism described above, offer a hypothesis as to why this condition may be more severe in some individuals than others.
You have the task of producing 3 kilogram of porcine (pig) insulin from pig pancreases to create an emergency stockpile of insulin. You know that a typical adult pig has a 269 gram pancreas and it is possible to produce 15 micromoles of purified insulin from 1 kg of pancreatic tissue. How many fresh pig carcasses would you need to produce 3 kg of insulin?
Shortly after a typical meal, your blood glucose will rise from its fastinglevel of 4.4 mM to 6.6 mM.(a) How many grams of glucose does this increase represent? (An averageadult male weighing 70 kg has a blood volume of about 5 L.)(b) Estimate the change in velocity for the liver hexokinase isozyme (IV)and the muscle hexokinase isozyme (I) that the fasting versus fed glucoseconcentrations would produce.
Chapter 46 Solutions
1 SEM ACC W/RAVEN CARDED
Ch. 46.1 - Prob. 1LOCh. 46.1 - Prob. 2LOCh. 46.1 - Prob. 3LOCh. 46.2 - Prob. 1LOCh. 46.2 - Prob. 2LOCh. 46.3 - Prob. 1LOCh. 46.3 - Prob. 2LOCh. 46.4 - Prob. 1LOCh. 46.4 - Explain how absorbed nutrients move into the blood...Ch. 46.5 - Prob. 1LO
Ch. 46.5 - Prob. 2LOCh. 46.5 - Prob. 3LOCh. 46.6 - Prob. 1LOCh. 46.6 - Prob. 2LOCh. 46.7 - Prob. 1LOCh. 46.7 - Prob. 2LOCh. 46.7 - Prob. 3LOCh. 46.8 - Prob. 1LOCh. 46.8 - Describe how rumination works.Ch. 46.8 - Prob. 3LOCh. 46 - Prob. 1DACh. 46 - If you constructed a phylogeny using molecular...Ch. 46 - Prob. 1IQCh. 46 - Prob. 2IQCh. 46 - Prob. 3IQCh. 46 - Prob. 4IQCh. 46 - How is the digestion of fats different from that...Ch. 46 - Although the stomach is normally thought of as the...Ch. 46 - After being absorbed through the intestinal...Ch. 46 - Which of these pairings is incorrect? a. Fat...Ch. 46 - Intestinal microorganisms aid digestion and...Ch. 46 - Prob. 6UCh. 46 - Which of the following represents the action of...Ch. 46 - Prob. 1ACh. 46 - The primary function of the large intestine is to...Ch. 46 - Inactive forms of some molecules are secreted a....Ch. 46 - Prob. 4ACh. 46 - Many birds possess crops, although few mammals do....Ch. 46 - Suppose that you wanted to develop a new treatment...Ch. 46 - How could a drop in plasma proteins and a decrease...Ch. 46 - Unlike many cases of convergence (see section...Ch. 46 - Prob. 5S
Knowledge Booster
Learn more about
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
- Offer a theory to explain why segmentation occurs and peristalsis slows in the small intestine.arrow_forwardIn the liver, the relative activity of ornithine transcarbamylase is high, that of argininosuccinate synthetase is low, and that of arginase is high. Why is it important that ornithine transcarbamylase activity be high in the liver? What might be the consequence if arginase activity is low or defective?arrow_forwardGive only typing answer with explanation and conclusionarrow_forward
- Which vitamin is lacking from rice? Describe how genetic engineering has addressed this problem. What is the name of the GMO rice, and is it now widely cultivated?arrow_forwardA teenager was admitted to the hospital with extreme muscle pain, lightheadedness and fatigue after an attempt at intensive exercise. Tests revealed accumulation of very high levels of pyruvate in muscle cells. Symptoms were alleviated by providing intravenous glucose regularly. Advanced tests revealed that this individual carried a mutation in the gene for a single muscle enzyme. (a) Based on the information provided, speculate on which enzyme was mutated in this individual. Write the enzyme name here: (b) Justify your answer to (a).arrow_forwardThe following experimental data were collected during a study of the catalytic activity of an intestinal peptidase with the substrate glycylglycine: Glycylglycine + H2O → 2 glycine [S] (mM) Product formed (µmol/min¬1) 0.21 0.24 0.28 1.5 2.0 3.0 4.0 0.33 0.40 8.0 16.0 0.45 Use graphical analysis (see Box 6-1) to determine the Vmax and Km for this enzyme preparation and substrate.arrow_forward
- The intravenous infusion of fructose into healthy volunteers leads to a two- to fivefold increase in the level of lactate in the blood, a far greater increase than that observed after the infusion of the same amount of glucose. (a) Why is glycolysis more rapid after the infusion of fructose? (b) Fructose has been used in place of glucose for intravenous feeding. Why is this use of fructose unwise?arrow_forwardPhosphofructokinase 1 (PFK1) activity is regulated by the concentration of ATP through allostery. Increasing the cellular concentration of ATP decreases the affinity of the enzyme for the substrate fructose-6-phosphate. Given that ATP is also one of the substrates for PFK1, how does this regulation mechanism work so effectively? a) ATP can bind to two places on PFK, when ATP is bound in the other site, PFK changes conformation leading to lower affinity for fructose-6-phosphate b) At high concentrations, ATP binds and reverses the PFK reaction c) ATP decreases the activity of aldolase, leading to product inhibition of PFK d) ATP at high concentration binds in place of fructose-6-phosphatearrow_forwardWhy is it surprising that humans consumed milk products long before the existence of the gene mutation for digesting lactose?arrow_forward
- A recent study (Prasath, G.S. et al., 2014) found that strawberries contain a compound called fisetin which slows the release of glucose into blood during fasting. This slowing occurs whether the glucose is generated from glycogen hydrolysis or gluconeogenesis. Propose an enzyme that fisetin inhibits and defend your answer. How does the intacellular concentration of citrate affect fructose 1,6-bis phosphatase? [If you cannot remember, try to deduce it.] Describe how this fits into cellular physiology. Describe a situation in gluconeogenesis where having a cytoplasmic and mitochondrial isoenzyme that can catalyze the same reaction provides a benefit. Can the energy in consumed ethanol be stored in glycogen? Explain.arrow_forwardIn germ-free mice, which harbor no intestinal bacteria, the O-linked oligosaccharides of intestinal glycoproteins tend to lack a terminal fucose residue (see Fig.). (a) What enzyme is not produced in normal quantities in these mice? (b) What monosaccharides tend to appear at the ends of O-linked oligosaccharides in these animals?arrow_forwardThe cytochrome P450 system metabolizes many medicinally useful drugs. Although all human beings have the same number of P450 genes, individual polymorphisms exist that alter the specificity and efficiency of the proteins encoded by the genes. How could knowledge of individual polymorphisms be useful clinically?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Anatomy & PhysiologyBiologyISBN:9781938168130Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark WomblePublisher:OpenStax College
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Principles Of Radiographic Imaging: An Art And A ...Health & NutritionISBN:9781337711067Author:Richard R. Carlton, Arlene M. Adler, Vesna BalacPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Anatomy & Physiology
Biology
ISBN:9781938168130
Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher:OpenStax College
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Principles Of Radiographic Imaging: An Art And A ...
Health & Nutrition
ISBN:9781337711067
Author:Richard R. Carlton, Arlene M. Adler, Vesna Balac
Publisher:Cengage Learning
Human digestive system - How it works! (Animation); Author: Thomas Schwenke;https://www.youtube.com/watch?v=X3TAROotFfM;License: Standard Youtube License