The fluidity of a lipid bilayer will be decreased by: A) increasing the number of unsaturated...
The fluidity of a lipid bilayer will be decreased by:
A) increasing the number of unsaturated positions.
B) increasing the temperature.
C) decreasing the temperature.
D) decreasing the length of the alkyl chains.
Homework Answers
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The fluidity of a lipid bilayer will be decreased by:
A) increasing the number of unsaturated...
The fluidity of the lipid side chains in the interior of a bilayer is generally DECREASED...
The fluidity of the lipid side chains in the interior of a bilayer is generally DECREASED by: A. an increase in temperature. B. an increase in fatty acyl chain length. C. an increase in the number of double bonds in fatty acids. D. the binding of water to the fatty acyl side chains E. none of the above or multiple of above is correct.
Below is a curve show lipid bilayer fluidity that contains mostly saturated triacylglcerides. The x-axis is...
Below is a curve show lipid bilayer fluidity that contains mostly saturated triacylglcerides. The x-axis is temperature in C and the y-axis is degree of fluidity (higher value means the membrane is more fluid). 1_I_I_I_I_I_ Describe a new curve on this graph showing fluidity for a bilayer (membrane) where more unsaturation was incorporated into the lipid bilayer • At low temperature (2) there is less fluidity and at high temperature (12) more fluidity © At low temperature (2) there is...
Question 6 3 pts Below is a curve show lipid bilayer fluidity that contains mostly saturated...
Question 6 3 pts Below is a curve show lipid bilayer fluidity that contains mostly saturated triacylglcerides. The x-axis is temperature in C and the y-axis is degree of fluidity (higher value means the membrane is more fluid). I_ I_V_ I I_ __ 4 ó ś io 12 Describe a new curve showing the original bilayer if it had cholesterol added. At low temperature (2) there is less fluidity and at high temperature (12) more fluidity At low temperature (2)...
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In winter many organisms adapt to the cold temperatures by increasing the fluidity of their membranes. Which of the following would accomplish this? a. Decreasing the effective membrane Tm b. Decreasing the length of its fatty acid chains c. Decreasing the saturation of its fatty acids chains d. All the above
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How are lipid bilayers formed? What is their fluidity dependent on? Group of answer choices: - Hydrophobic interactions are the driving force of forming bimolecular sheets of lipids spontaneously. Due to the hydrophobic effect, any tears in the lipid bilayer cause it to spontaneously rearrange to eliminate the free edge. Membrane fluidity depends on the percentage of unsaturated fatty acids. - Hydrophobic interactions are the driving force of forming bimolecular sheets of lipids spontaneously. Due to the hydrophobic effect, any...
Which of these statements about the composition of membranes is true?
Which of these statements about the composition of membranes is true?A) All biological membranes contain cholesterol.B) Free fatty acids are major components of all membranes. C) The inner and outer membranes of mitochondria have different protein compositions.D) The lipid composition of all membranes of eukaryotic cells is essentially the same.E) The lipid: protein ratio varies from about 1: 4 to 4: 1Membrane proteins:A) ere sometimes covalently attached to lipid moieties:B) are sometimes covalently attached to carbohydrate moieties.C) are composed of...
Incorrect Question 2 0/1 pts How are lipid bilayers formed? What is their fluidity dependent on?...
Incorrect Question 2 0/1 pts How are lipid bilayers formed? What is their fluidity dependent on? Hydrophobic interactions are the driving force of forming bimolecular sheets of lipids spontaneously. Due to the hydrophobic effect, any tears in the lipid bilayer cause it to spontaneously rearrange to eliminate the free edge. Membrane fluidity depends on the percentage of unsaturated fatty acids Hydrophobic interactions are the driving force of forming bimolecular sheets of lipids spontaneously. Due to the hydrophobic effect, any tears...
1. Lets compare two lipid bilayer systems: one composed of phospholipids having saturated acyl chains 20...
1. Lets compare two lipid bilayer systems: one composed of phospholipids having saturated acyl chains 20 carbons in length, and the other having acyl chains of the same length but with cis double bonds at C-5, C-8, C-11 and C-14. a. Lets assume that all of the head-groups are phosphatidylethanolamine. Draw a representative lipid from each bilayer system. b. Which lipid bilayer system will have the highest Tm? Explain.
Protein folding and lipid-bilayer formation result in decreased entropy for a protein molecule and bilayer components....
Protein folding and lipid-bilayer formation result in decreased entropy for a protein molecule and bilayer components. The decrease entropy of the surrounding entropy is balanced by a large increase in the OTemperature Salt solutions Pressure Water molecules Water's ability to dissolve a wide variety of molecules is important, but more important is the hydrophobic effect, which drives the aggregation of nonpolar molecules and plays a role in the folding of proteins and formation of lipid bilayers. What forces drive the...
8. Protons are unable to cross the lipid bilayer because: a) the lipid bilayer is too...
8. Protons are unable to cross the lipid bilayer because: a) the lipid bilayer is too hydrophilic b) protons are nonpolar c) protons are too small d) the lipid bilayer is only permeable to polar substances e) none of the above  9. The side chain of an amino acid labeled ‘basic’ is most likely ______ at cellular pH and it therefore ______ water. Fill in the blanks with the word pair that correctly completes the sentence. a) negatively-charged; b)...
The fluidity of the lipid side chains in the interior of a bilayer is generally DECREASED by: A. an increase in temperature. B. an increase in fatty acyl chain length. C. an increase in the number of double bonds in fatty acids. D. the binding of water to the fatty acyl side chains E. none of the above or multiple of above is correct.
Below is a curve show lipid bilayer fluidity that contains mostly saturated triacylglcerides. The x-axis is temperature in C and the y-axis is degree of fluidity (higher value means the membrane is more fluid). 1_I_I_I_I_I_ Describe a new curve on this graph showing fluidity for a bilayer (membrane) where more unsaturation was incorporated into the lipid bilayer • At low temperature (2) there is less fluidity and at high temperature (12) more fluidity © At low temperature (2) there is...
Question 6 3 pts Below is a curve show lipid bilayer fluidity that contains mostly saturated triacylglcerides. The x-axis is temperature in C and the y-axis is degree of fluidity (higher value means the membrane is more fluid). I_ I_V_ I I_ __ 4 ó ś io 12 Describe a new curve showing the original bilayer if it had cholesterol added. At low temperature (2) there is less fluidity and at high temperature (12) more fluidity At low temperature (2)...
Incorrect Question 2 0/1 pts How are lipid bilayers formed? What is their fluidity dependent on? Hydrophobic interactions are the driving force of forming bimolecular sheets of lipids spontaneously. Due to the hydrophobic effect, any tears in the lipid bilayer cause it to spontaneously rearrange to eliminate the free edge. Membrane fluidity depends on the percentage of unsaturated fatty acids Hydrophobic interactions are the driving force of forming bimolecular sheets of lipids spontaneously. Due to the hydrophobic effect, any tears...
1. Lets compare two lipid bilayer systems: one composed of phospholipids having saturated acyl chains 20 carbons in length, and the other having acyl chains of the same length but with cis double bonds at C-5, C-8, C-11 and C-14. a. Lets assume that all of the head-groups are phosphatidylethanolamine. Draw a representative lipid from each bilayer system. b. Which lipid bilayer system will have the highest Tm? Explain.
Protein folding and lipid-bilayer formation result in decreased entropy for a protein molecule and bilayer components. The decrease entropy of the surrounding entropy is balanced by a large increase in the OTemperature Salt solutions Pressure Water molecules Water's ability to dissolve a wide variety of molecules is important, but more important is the hydrophobic effect, which drives the aggregation of nonpolar molecules and plays a role in the folding of proteins and formation of lipid bilayers. What forces drive the...
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