Campbell Biology Custom Stony Brook 10 Th Edition
10th Edition
ISBN: 9781269870818
Author: Reece Urry Cain Wasserman Minorsky Jackson
Publisher: PEARSON
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Chapter 41.4, Problem 3CC
WHAT IF? → "Lactose-intolerant" people have a shortage of lactase, the enzyme that breaks down lactose in milk. As a result, they sometimes develop cramps, bloating, or diarrhea after consuming dairy products. Suppose such a person ate yogurt that contains bacteria that produce lactase. Why would eating yogurt likely provide at best only temporary relief of the symptoms?
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B) Read the situations below and indicate which of the four methods of enzyme regulation is
occurring for each.
a) The energy-carrying molecule ATP is made by the enzyme ATP synthase. Muscle cells use a
lot of energy and also have higher amounts of the ATP synthase enzyme than many ouier cem
types.
General mechanism of enzyme regulation:
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b) Prostaglandins are messenger molecules involved in the inflammatory response, as well as th
perception of pain. They are synthesized from polyunsaturated fatty acid substrates by an enzyn
called cyclo-oxygenase. "Ibuprofen" is the active ingredient in a variety of anti-inflammatory
medications such as Motrin® and Advil®. It reduces pain and swelling by binding to a
hydrophobic channel in the active site of cyclo-oxygenase, blocking the polyunsaturated fatty
acids from binding to the enzyme, and therefore stopping production of prostaglandins.
General mechanism of enzyme regulation:
a) In point form, describe the steps by which ATP is produced…
explain.
Chapter 41 Solutions
Campbell Biology Custom Stony Brook 10 Th Edition
Ch. 41.1 - An animal requires 20 amino acids to make...Ch. 41.1 - Prob. 2CCCh. 41.1 - WHAT IF? If a zoo animal eating ample food shows...Ch. 41.2 - Prob. 1CCCh. 41.2 - In what sense are nutrients from a recently...Ch. 41.2 - Prob. 3CCCh. 41.3 - Explain why a proton pump inhibitor, such as the...Ch. 41.3 - Thinking about our nutritional needs and feeding...Ch. 41.3 - Prob. 3CCCh. 41.4 - Prob. 1CC
Ch. 41.4 - What features of a mammal's digestive system make...Ch. 41.4 - WHAT IF? "Lactose-intolerant" people have a...Ch. 41.5 - Explain how people can become obese even if their...Ch. 41.5 - WHAT IF? Suppose you were studying two groups of...Ch. 41.5 - Prob. 3CCCh. 41 - Prob. 41.1CRCh. 41 - Propose an artificial diet that would eliminate...Ch. 41 - Prob. 41.3CRCh. 41 - How does human anatomy indicate that our primate...Ch. 41 - Prob. 41.5CRCh. 41 - Fat digestion yields fatty acids and glycerol....Ch. 41 - The mammalian trachea and esophagus both connect...Ch. 41 - Which of the following organs is incorrectly...Ch. 41 - Prob. 4TYUCh. 41 - After surgical removal of the gallbladder, a...Ch. 41 - If you were to jog 1 km a few hours after lunch,...Ch. 41 - DRAW IT Create a flowchart to summarize the events...Ch. 41 - Prob. 8TYUCh. 41 - SCIENTIFIC INQUIRY In human populations of...Ch. 41 - WRITE ABOUT A THEME: ORGANIZATION Hair is largely...Ch. 41 - SYNTHESIZE YOUR KNOWLEDGE Hummingbirds are well...
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- 3) Read the situations below and indicate which of the four methods of enzyme regulation is occurring for each. a) The energy-carrying molecule ATP is made by the enzyme ATP synthase. Muscle cells use a lot of energy and also have higher amounts of the ATP synthase enzyme than many other cell types. General mechanism of enzyme regulation: S b) Prostaglandins are messenger molecules involved in the inflammatory response, as well as the perception of pain. They are synthesized from polyunsaturated fatty acid substrates by an enzym called cyclo-oxygenase. "Ibuprofen" is the active ingredient in a variety of anti-inflammatory medications such as Motrin® and Advil®. It reduces pain and swelling by binding to a hydrophobic channel in the active site of cyclo-oxygenase, blocking the polyunsaturated fatty acids from binding to the enzyme, and therefore stopping production of prostaglandins. General mechanism of enzyme regulation:arrow_forwardQ: Breast milk from femae humans and other mammals has a variety of nutritious metabolites for growing infantts including antibodies that are passed on from the mother to the child lactose How does jactone enter giyoonysis in the intant's cell? A)it is broken down into alucose, which enters glycolysis directly, and galactose but it is particularly high in the carbohydrate which enters glycolysis after a series of reactions involving a sugqar-nucleotide that epimerize it to a phosphorylated form of glucose B)Its nonveducing end is attacked by norganic phosphate (PI), creating a giycolysis intermediate C) Hexokinase phosphorytates it to create a glycolysis intermediate D) A salivary amylase enryme begins to catabolize it then a pancreatic amylase enzyme continues to catabolize it at lower pH E)it enters giycolysis after a series of reactions involving a sugar-nucieotide that epimerize it directly to a phosphorylated form of glucosearrow_forwardDraw a schematic diagram of how we can nonpharmacologically manage Lactose Intolerance ? Please answer at your own words.arrow_forward
- How does the presence of α-bonds versus β-bonds influence the digestibility of glucose polymers by humans? Hint: There are two effects.arrow_forwardExplain the answerarrow_forwardVI. Although most biologically relevant sugars have the D-configuration, L-fucose is a commonly observed monosaccharide component in glycoproteins. Glycosylated antibodies (IgGs) observed in patients with active TB have more fucose than those found in patients with latent TB (Lu et. al., 2016). Latent TB occurs when a person has the TB bacteria, but bacterial proliferation is kept under control by the body's immune system; hence, the infected person is asymptomatic and not infectious. A person with latent TB will test positive for the tuberculin test or TB blood test. a) L-fucose is also known as 6-deoxy-L-galactose. Note that D-galactose is a C-4 epimer of D-glucose. Draw the Fisher projections for D-glucose, D-galactose and L-fucose. (Hints: D- and L-isomers are enantiomers. 6-deoxy means that the hydroxyl group at C-6 is removed leaving just the methyl group). D-galactose: D-glucose: L-fucose (6-deoxy-L-galactose): b) L-fucose can cyclize into a pyranose and form two anomers. Draw…arrow_forward
- . Students carry out a laboratory experiment with avidin (a protein in eg white) having a very high aflinity for biotin enzymes. Which enzyme of glucose metabolism would be inhibited by the addition of avidin to a cell homogenate? For answer: a) draw a reaction that would be blocked by the addition of avidin to a cell homogenate; b) write a diagram of the carbohydrate metabolism in which this reaction takes place.arrow_forwardSee photo pleasearrow_forward12arrow_forward
- What is the importance of this protein?? Please explain.arrow_forwardA 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_forwardExplain the role that Gla residues play in complexes. Explain the role of vitamin K / warfarins in the synthesis of protease factors and list the Vitamin K-dependent factorsarrow_forward
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