Homework Answers
Thermogenin is an uncoupling protein found in the mitochondria of brown adipose tissue.
Mitochondria produce ATP by oxidative phosphorylation.
Oxidative phosphorylation is mediated by the differential proton
gradient across the inner mitochondrial membrane.
Thermogenin is a transmembrane protein that decreases proton
gradient produced by NADH and FADH2.
Thermogenin uncouples proton gradient from ATP production. So,
mitochondria produce heat instead of ATP.
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13. Brown fat cells produce a protein called thermogenin in 5/5 their mitochondrial inner membrane. Thermogenin...
QUESTION 21 Brown fat cells produce a protein called thermogenin in their mitochondrial inner membrane. Thermogenin...
QUESTION 21 Brown fat cells produce a protein called thermogenin in their mitochondrial inner membrane. Thermogenin is a channel for facilitated transport of protons across the membrane. What will occur in the brown fat cells when they produce thermogenin OA. ATP synthesis and heat generation will both increase. OB. ATP synthesis and heat generation will stay the same. OC. ATP synthesis will decrease and heat generation will increase D. ATP synthesis and heat generation will both decrease E. ATP synthesis...
intermediate molecules of ADP. 48. Approximately how many molecules of ATP are produced from the complete...
intermediate molecules of ADP. 48. Approximately how many molecules of ATP are produced from the complete oxidanono molecules of glucose (C6H1206) in aerobic cellular respiration? A) 2 B) 4 C) 15 D) 30-32 E) 60-64 49. In liver cells, the inner mitochondrial membranes are about five times the area of the out mitochondrial membranes. What purpose must this serve? A) It increases the surface area for glycolysis. B) It increases the surface area for the citric acid cycle. C) It...
Most newborn mammals, including human infants, have a special type of adipose tissue called brown fat,...
Most newborn mammals, including human infants, have a special type
of adipose tissue called brown fat, in which a naturally occurring
uncoupling protein called thermogenin is present in the inner
mitochondrial membrane. Thermogenin uncouples ATP synthesis from
electron transport so that the energy released as electrons flow
through the electron transport chain is lost as heat instead.
What kind of an experiment can you suggest to test your hypothesis? Drag the terms on the left to the appropriate blanks on...
The electron transport chain consists of protein complexes embedded in the inner mitochondrial membrane, where it...
The electron transport chain consists of protein complexes embedded in the inner mitochondrial membrane, where it generat a proton gradient by a series of oxidation-reduction, or redox, reactions. Although all of the stages of cellular respiration (glycolysis, the citric acid cycle, and the electron transport chain) are necessary for life, the electron transport chain is sometimes called the most important stage. First complete the sentence, then answer the question. The electron transport chain uses the transfer of protons between protein...
6) What protein complex in the inner mitochondrial membrane allows protons to return to the matrix?...
6) What protein complex in the inner mitochondrial membrane allows protons to return to the matrix? ONADH dehydrogenase FoF1 porin electron transport carriers cytochrome 47) Which of the following compounds inhibits the pyruvate dehydrogenase (2pts) complex? O FAD NAD+ □ ADP acetyl COA 48) The acetyl group of acetyl CoA is transferred to oxaloacetate by the enzyme citrate synthase. OTrue (2pts) False
please answer all 1. A type of adipose tissue in many organisms is called brown fat....
please answer all 1. A type of adipose tissue in many organisms is called brown fat. Which of the following statements is correct for brown fat? Hibernating bears have very little of this type of adipose tissue. It produces a great deal of heat as a result of the presence of thermogenin. The efficiency of oxidative phosphorylation is high in this tissue. Its color is derived from high blood supply. 2. What statement illustrates the role of Ca2+ in regulation...
The transport system that conveys malate and alpha-ketoglutarate across the inner mitochondrial membrane is inhibited by...
The transport system that conveys malate and alpha-ketoglutarate across the inner mitochondrial membrane is inhibited by n-butylmalonate. Suppose n-butylmalonate is added to an aerobic suspension of kidney cells using glucose exclusively as fuel. Predict the effect of this inhibitor on: a) Glycolysis b) Oxygen consumption c) Lactate formation d) ATP synthesis
Complete the sentences to explain why long chain fatty acids cannot pass the mitochondrial membrane via...
Complete the sentences to explain why long chain fatty
acids cannot pass the mitochondrial membrane via diffusion, and the
mechanism by which the cells transport them.
duction of Energy via Fatty Acid Oxidation CPT II mitochondrial matrix large CPT I inner mitochondrial Long-chain fatty acids have an alkyl chain of more than 10 carbon atoms. Fatty acids with alkyl chains of this length are characterized as size. This length decreases their ability to cross the lipid bilayer of the mitochondrial...
Part A Complete the sentences to explain why long-chain fatty acids cannot pass the mitochondrial membrane...
Part A Complete the sentences to explain why long-chain fatty acids cannot pass the mitochondrial membrane via diffusion, and the mechanism by which the cells transport them. Match the words in the left column to the appropriate blanks in the sentences on the right. View Available Hint(s) Reset Help translocase polar acyl-CoA synthetase Long-chain fatty acids have an alkyl chain of more than 10 carbon atoms. Fatty acids with alkyl chains of this length are characterized as in terms of...
NH HO HO Man Protein HO HO- Man or What type of membrane protein is shown...
NH HO HO Man Protein HO HO- Man or What type of membrane protein is shown below? Glycoprotein Man HO- HNo HO OR OH OM o0 wtracedular cell membrane eytesel Integral membrane protein GPI-anchored protein Peripheral membrane protein membrane proteins are bound primarily by electrostatic and hydrogen-bond interactions with the head groups of lipids. Peripheral membrane protein O Integral membrane protein GPI-anchored protein An antiporter and a symporter are examples of: passive diffusion Osecondary active transport O primary active transporters...
QUESTION 21 Brown fat cells produce a protein called thermogenin in their mitochondrial inner membrane. Thermogenin is a channel for facilitated transport of protons across the membrane. What will occur in the brown fat cells when they produce thermogenin OA. ATP synthesis and heat generation will both increase. OB. ATP synthesis and heat generation will stay the same. OC. ATP synthesis will decrease and heat generation will increase D. ATP synthesis and heat generation will both decrease E. ATP synthesis...
intermediate molecules of ADP. 48. Approximately how many molecules of ATP are produced from the complete oxidanono molecules of glucose (C6H1206) in aerobic cellular respiration? A) 2 B) 4 C) 15 D) 30-32 E) 60-64 49. In liver cells, the inner mitochondrial membranes are about five times the area of the out mitochondrial membranes. What purpose must this serve? A) It increases the surface area for glycolysis. B) It increases the surface area for the citric acid cycle. C) It...
Most newborn mammals, including human infants, have a special type
of adipose tissue called brown fat, in which a naturally occurring
uncoupling protein called thermogenin is present in the inner
mitochondrial membrane. Thermogenin uncouples ATP synthesis from
electron transport so that the energy released as electrons flow
through the electron transport chain is lost as heat instead.
What kind of an experiment can you suggest to test your hypothesis? Drag the terms on the left to the appropriate blanks on...
The electron transport chain consists of protein complexes embedded in the inner mitochondrial membrane, where it generat a proton gradient by a series of oxidation-reduction, or redox, reactions. Although all of the stages of cellular respiration (glycolysis, the citric acid cycle, and the electron transport chain) are necessary for life, the electron transport chain is sometimes called the most important stage. First complete the sentence, then answer the question. The electron transport chain uses the transfer of protons between protein...
6) What protein complex in the inner mitochondrial membrane allows protons to return to the matrix? ONADH dehydrogenase FoF1 porin electron transport carriers cytochrome 47) Which of the following compounds inhibits the pyruvate dehydrogenase (2pts) complex? O FAD NAD+ □ ADP acetyl COA 48) The acetyl group of acetyl CoA is transferred to oxaloacetate by the enzyme citrate synthase. OTrue (2pts) False
Complete the sentences to explain why long chain fatty
acids cannot pass the mitochondrial membrane via diffusion, and the
mechanism by which the cells transport them.
duction of Energy via Fatty Acid Oxidation CPT II mitochondrial matrix large CPT I inner mitochondrial Long-chain fatty acids have an alkyl chain of more than 10 carbon atoms. Fatty acids with alkyl chains of this length are characterized as size. This length decreases their ability to cross the lipid bilayer of the mitochondrial...
Part A Complete the sentences to explain why long-chain fatty acids cannot pass the mitochondrial membrane via diffusion, and the mechanism by which the cells transport them. Match the words in the left column to the appropriate blanks in the sentences on the right. View Available Hint(s) Reset Help translocase polar acyl-CoA synthetase Long-chain fatty acids have an alkyl chain of more than 10 carbon atoms. Fatty acids with alkyl chains of this length are characterized as in terms of...
NH HO HO Man Protein HO HO- Man or What type of membrane protein is shown below? Glycoprotein Man HO- HNo HO OR OH OM o0 wtracedular cell membrane eytesel Integral membrane protein GPI-anchored protein Peripheral membrane protein membrane proteins are bound primarily by electrostatic and hydrogen-bond interactions with the head groups of lipids. Peripheral membrane protein O Integral membrane protein GPI-anchored protein An antiporter and a symporter are examples of: passive diffusion Osecondary active transport O primary active transporters...
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