Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
3rd Edition
ISBN: 9780134895727
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 32.3, Problem 2CC
Summary Introduction
To explain:
The negative feedback in thermoregulation differs from feedback inhibition in an enzyme catalyzed biosynthetic process.
Introduction:
Negative feedback occurs when the end product of an enzyme interferes or decreases the effect of the same enzyme that produced it. The feedback inhibition mechanism is the cellular process in which the end product of an enzyme inhibits the production of the same enzyme that produced it. By this process there is the maintenance of the amount of enzyme required. Both processes help in the regulation of the
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Chapter : Lipid Metabolism"It has been proposed that malonyl CoA may be one of the signals sent to the brain to decrease the appetite response. When mice are given a derivative of cerulenin (a fungal epoxide) named C75, their appetite is suppressed and they rapidly lose weight. Cerulenin and its derivatives have been shown to be potent inhibitors of fatty acid synthase (FAS). Suggest how C75 might act as a potential weight reduction drug"Thanks. Please write the answers clearly.
Q: Establish a correspondence between the items indicated by a number and a letter:
features of catalysis:-
Catalyzes the oxidative phosphorylation reaction.
Participates in the reaction of substrate phosphorylation. b)
Forms oxaloacetate in the mitochondria of the cell. d)
Enzyme:-
a) ATP synthase;
b) succinate thiokinase;
c) isocitrate dehydrogenase;
d) malate dehydrogenase;
e) citrate synthase.
How do both activation energy barriers and enzymes help maintain thestructural and metabolic order of life?
Chapter 32 Solutions
Campbell Biology In Focus, Loose-leaf Edition (3rd Edition)
Ch. 32.1 - What properties do all types of epithelia share?Ch. 32.1 - Prob. 2CCCh. 32.2 - Prob. 1CCCh. 32.2 - Prob. 2CCCh. 32.2 - Prob. 3CCCh. 32.3 - Is it accurate to define homeostasis as a constant...Ch. 32.3 - Prob. 2CCCh. 32.3 - Prob. 3CCCh. 32.4 - What is the function of the filtration step in...Ch. 32.4 - What advantage does uric acid offer as a...
Ch. 32.4 - WHAT IF? A camel standing in the sun requires much...Ch. 32.5 - Prob. 1CCCh. 32.5 - Prob. 2CCCh. 32.5 - WHAT IF? If blood pressure in the afferent...Ch. 32 - The body tissue that consists largely of material...Ch. 32 - Prob. 2TYUCh. 32 - Which process in the nephron is least selective?...Ch. 32 - Homeostasis typically relies on negative feedback...Ch. 32 - Prob. 5TYUCh. 32 - In which of the following species should natural...Ch. 32 - Prob. 7TYUCh. 32 - Prob. 8TYUCh. 32 - Prob. 9TYUCh. 32 - Prob. 10TYUCh. 32 - Prob. 11TYUCh. 32 - SYNTHESIZE YOUR KNOWLEDGE These macaques (Macaca...
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
- • Draw out the pathway for the biosynthesis of the following triacylglycerol starting with dihydroxyacetone phosphate and the component fatty acids as it occurs in the adipose tissue. Show the structures of all reactants and products, as well as the names of the enzymes. You do not need to draw the structures of ATP, NAD+, COA, etc., but do show them as reactants or products in the appropriate places. You do not need to show the mechanisms of the enzymes. H₂C- H—C— [1220625 H₂C-0 ном HOM 12 STACGLO u ULJ obc juarrow_forward• Draw out the pathway for the biosynthesis of the following glycerophospholipid starting with dihydroxyacetone phosphate and the component fatty acids as it occurs in the liver tissue. Show the structures of all reactants and products, as well as the names of the enzymes. You do not need to draw the structures of ATP, NAD+, COA, etc., but do show them as reactants or products in the appropriate places. You do not need to show the mechanisms of the enzymes. ● • What is the name of the phospholipid? O H₂C-0- H—C—0 CH₂ -P- O O OH H₂ H₂ c-c-C-OH Harrow_forwardQ20:arrow_forward
- Q48arrow_forwardVmax for an enzyme-catalyzed reaction: A)is twice the rate observed when the concentration of substrate is equal to Km. B)is unchanged in the presence of a noncompetitive inhibitor. C)generally increases when pH increases. D)increases in the presence of a competitive inhibitor. E)is limited only by the amount of substrate supplied.arrow_forwardCytosol Mitochondrion A. PATHWAY 1. major pathway of ethanol metabolism NAD* NADH + H* NAD* NADH + H* in the liver CH,-CH,-OH ADH + CH,-C=O CH;-C-OH + H-O-H ALDH ETHANOL ACETALDEHYDE АСЕТАТЕ WATER B. PATHWAY 2 microsomal ethanol CYP2E1 oxidizing system (MEOS) NADPH + H* + O2 NADP* + 2H,O Excess alcohol consumption increases the NADH:NAD* ratio in the cytosol of hepatocytes.arrow_forward
- © Macmillan Learning A outside → Ainside, is 10.9 kJ/mol at 25°C. Consider a uniport system where a carrier protein transports an uncharged substance A across a cell membrane. Suppose that at a certain ratio of [A] inside to [A] outside, the AG for the transport of substance A from outside the cell to the inside, What is the ratio of the concentration of substance A inside the cell to the concentration outside? [A]inside [A] outside -81.28 Incorrect Answer Choose the true statement about the transport of A under the conditions described. Decreasing the concentration of the uniport protein in the membrane will cause AG to become a smaller positive number. Because AG is positive, the ratio [A] inside/[A] outside must be less than one. Increasing [A] outside will cause AG for movement of Aoutside to Ainside to become a larger positive number. Movement of Ainside to Aoutside will be spontaneous. Incorrect Answerarrow_forwardThe following diagram shows the biosynthesis of B12 coenzymes, starting with the vitamin. DMB is dimethylbenzimidazole. (a) What one additional substrate or cofactor is required by enzyme B?(b) Genetic deficiency in animals of enzyme C would result in excessiveurinary excretion of what compound?(c) Some forms of the condition described in (b) can be successfully treatedby injection of rather massive doses of vitamin B12. What kind ofgenetic alteration in the enzyme would be consistent with this result?(d) Genetic deficiency in animals of enzyme B will result in excessive urinaryexcretion of what amino acid?arrow_forwardB) 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: /1 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…arrow_forward
- Q14:arrow_forwardVmax for an enzyme-catalyzed reaction: A) generally increases when pH increases. B) is limited only by the amount of substrate supplied. C) is twice the rate observed when the concentration of substrate is equal to the Km. D) is unchanged in the presence of a uncompetitive inhibitor. E) increases in the presence of a competitive inhibitor.arrow_forwardChapter: Lipid Metabolism Individuals with abnormally low levels of carnitine in their muscles suffer from muscular weakness during moderate exercise. In addition, their muscles have significantly increased levels of triacylglycerols. (a) Explain these two effects. (b) Can these individuals metabolize muscle glycogen aerobically?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning