Homework Answers
Te correct answer is option C - ATP synthesis will decrease and heat generation will increase
Explanation: Thermogenin is a 33KD protein which is present in the inner mitochondrial membrane. This protein transports proton and is a 'uncoupling proteins' which use proton gradients to generate heat.rather than making ATP. ETC transport proton from mitochondrial matrix to inner membrane space of mitochondria. When these protons move back to matrix through F0F1 ATPase ATPs are generated. But as thermogenin transport ATP in the matrix without the aid of F0F1 ATPase, ATP synthesis will decrease and the protons are used to generate heat.
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QUESTION 21 Brown fat cells produce a protein called thermogenin in their mitochondrial inner membrane. Thermogenin...
13. Brown fat cells produce a protein called thermogenin in 5/5 their mitochondrial inner membrane. Thermogenin...
13. Brown fat cells produce a protein called thermogenin in 5/5 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?*
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...
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
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
21) Which process in eukaryotic cells will normally proceed whether O2 is present or absent? A)...
21) Which process in eukaryotic cells will normally proceed whether O2 is present or absent? A) oxidative phosphorylation B) glycolysis C) Krebs cycle D) electron transport 22) The direct energy source that drives ATP synthesis during respiratory oxidative phosphorylation is A) thermodynamically favorable transfer of phosphate from glycolysis and Krebs cycle intermediate molecules of ADP. B) the thermodynamically favorable flow of electrons from NADH to the mitochondrial electron transport carriers. C) the final transfer of electrons to oxygen. D) the...
Hibernating animals and human infants contain brown fat deposits, so-called because of the presence of large...
Hibernating animals and human infants contain brown fat deposits, so-called because of the presence of large numbers of mitochondria, the site of electron transport and oxidative phosphorylation. In brown fat, given the appropriate stimulus, oxidative phosphorylation and electron transport can be uncoupled, causing energy to be dissipated as heat. The protein responsible for the uncoupling is a brown fat inner mitochondrial membrane protein previously named UCP (for uncoupling protein), but now referred to as UCP1, since a second uncoupling protein...
Q2. The release of ATP by the beta subunit is most directly dependent on: Select ONE...
Q2.
The release of ATP by the beta subunit is most directly
dependent on:
Select ONE option:
1. the flow of protons from the intermembrane space to the
matrix.
2. the rotation of the c-ring in the membrane.
3. the passage of electrons along the electron transport
chain.
4. a conformational change in the beta subunit.
Q3.
What defines the direction of rotation of the c-ring in the F0
complex?
(Select ALL that apply.)
1. Amino acids side chains in...
13. Brown fat cells produce a protein called thermogenin in 5/5 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?*
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
21) Which process in eukaryotic cells will normally proceed whether O2 is present or absent? A) oxidative phosphorylation B) glycolysis C) Krebs cycle D) electron transport 22) The direct energy source that drives ATP synthesis during respiratory oxidative phosphorylation is A) thermodynamically favorable transfer of phosphate from glycolysis and Krebs cycle intermediate molecules of ADP. B) the thermodynamically favorable flow of electrons from NADH to the mitochondrial electron transport carriers. C) the final transfer of electrons to oxygen. D) the...
Q2.
The release of ATP by the beta subunit is most directly
dependent on:
Select ONE option:
1. the flow of protons from the intermembrane space to the
matrix.
2. the rotation of the c-ring in the membrane.
3. the passage of electrons along the electron transport
chain.
4. a conformational change in the beta subunit.
Q3.
What defines the direction of rotation of the c-ring in the F0
complex?
(Select ALL that apply.)
1. Amino acids side chains in...
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