CAMP.BIO:CONC...MOD.MAST+PRINT>I<
10th Edition
ISBN: 9780136858287
Author: Taylor
Publisher: INTER PEAR
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Chapter 6, Problem 19TYK
Explain how the mechanism of brown fat
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Chapter 6 Solutions
CAMP.BIO:CONC...MOD.MAST+PRINT>I<
Ch. 6 - Fill in the blanks in this summary map to help you...Ch. 6 - A biochemist wanted to study how various...Ch. 6 - In glycolysis, _____ is oxidized and _____ is...Ch. 6 - Most of the CO2 from cellular respiration is...Ch. 6 - Which of the following is the most immediate...Ch. 6 - Which of the following is a true distinction...Ch. 6 - The poison cyanide binds to an electron carrier...Ch. 6 - In which of the following is the first molecule...Ch. 6 - Which of the three stages of cellular respiration...Ch. 6 - Compare and contrast fermentation as it occurs in...
Ch. 6 - Prob. 11TYKCh. 6 - Prob. 12TYKCh. 6 - Prob. 13TYKCh. 6 - Oxidative phosphorylation involves the flow of...Ch. 6 - In the citric acid cycle, an enzyme oxidizes...Ch. 6 - ATP synthase enzymes are found in the prokaryotic...Ch. 6 - Prob. 17TYKCh. 6 - For a short time in the 1930s, some physicians...Ch. 6 - Explain how the mechanism of brown fat metabolism...
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- After infection, some T cells (a particular type of immune cell) may persist as memory T cells (TMcells). When they re-encounter the same pathogen, TM cells rapidly divide to produce more T cells to help fight off the infection. This rapid cell division requires substantial energy. One way that this energy is provided to TMcells is via increased activity of the ETC. One standard type of experiment for analyzing oxidative metabolism is measuring the oxygen consumption rate OCR in the presence of different compounds. The lines indicate the time at which the different ETC/OxPhos inhibitors were added. Note that the inhibitors are never removed. Complete the table below. Time Period 1 2 3 4 Inhibitor added None Oligomycin (inhibits ATP Synthase) FCCP (Uncoupler) Rotenone + Antimycin (Complexes I and III) Can electrons flow? If so, from which compound to which compound? If not, what is preventing it? Can H+move through the membrane? If so,…arrow_forwardThe bodies of humans and other mammals store triglycerides in two kinds of tissue, which are called white and brown fat. The main function of white fat is to store triglycerides for energy. Brown tissue has more mitochondria than white tissue, and these are used to generate body heat in an unusual process. Mitochondria in brown fat make thermogenin, a protein that uncouples ATP synthesis from mitochondrial electron transfer chains. Thermogenin is a transport protein that allows hydrogen ions to move directly across the inner mitochondrial membrane instead of through ATP synthase. Since ATP synthase isn't activated, these "leaky" membranes produce less ATP. However, electrons still pass through electron transfer chains, and this process generates heat. In 2015, Daniele Barbato and his colleagues investigated the effect of a high-fat diet on brown fat mitochondrial function in mice. They maintained an experimental group of mice on a high-fat diet (HFD, 60% fat), and a control group…arrow_forwardIt has been hypothesized that a diet heavy in sugar may lead to a condition known as non-alcoholic fatty liver disease. Explain?arrow_forward
- The cholesterol synthesized by cells uses which component of the glycolytic pathway as a starting point? a. glucose b. acetyl CoA c. pyruvate d. carbon dioxidearrow_forwardIn hepatocytes, the enzyme glucokinase catalyzes the ATP-coupled phosphorylation of glucose. Glucokinase binds both ATP and glucose, forming a glucose-ATP-enzyme complex. The enzyme then transfers the phosphoryl group directly from ATP to glucose. Select the advantages of phosphoryl group transfer compared to hydrolysis and subsequent phosphorylation? Glucokinase increases the transition state energy, favoring glucose phosphorylation. Reaction intermediates do not need to be present in excess. The process takes advantage of the high phosphoryl group transfer potential of ATP. ATP hydrolysis is thermodynamically unfavorable compared to group transfer.arrow_forwardOne role of the pancreas is to help regulate blood glucose levels. Two types of cells in the pancreas, beta and alpha, serve as sensors to detect changes in blood glucose levels. High glucose levels cause beta cells to increase the amount of insulin given off by the pancreas. The insulin triggers body cells to take in glucose and the liver to store excess glucose as glycogen, decreasing the blood glucose level. On the other hand, low glucose blood levels trigger alpha cells to signal for glycogen to free up stored glucose from your liver, thus increasing the blood glucose level. (4 points) 1. What type of feedback mechanism is this, positive or negative? Explain your answer based on the description of the mechanism. Blood glucose levels change throughout the day. Explain what causes these changes and describe how these feedback cycles work together to maintain a dynamic homeostasis. III. Predict what will happen to this feedback mechanism and then to a person's body if the beta cells…arrow_forward
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