b Determine the expected and actual ratio of the diffusion coefficients, and determine whether the size difference accounts for the difference in the diffusion coefficients (D). (The M, of rhodopsin and fibronectin are 40000 and 460000 Da respectively.) Expected L(rhodopsin:fibronectin) = !3! Actual D(rhodopsin:fibronectin) = Previc Does the size difference account for the difference in diffusion coefficients in these two proteins?

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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please help with part B

LRoterences
Protein lateral motion is much slower than that of lipids because proteins are larger than lipids. Also, some membrane proteins can diffuse freely through the membrane, whereas others are
bound or anchored to other protein structures in the membrane.
The diffusion coefficient for the membrane protlein fibronectin is approximately 7.00x1013 cm/sec, whereas that for rhodopsin is about 3.00x10 cm/sec.
a Calculate the distance traversed (in nm) by cach of these proteins in 55.0 msec.
Distance traversed by rhodopsin = 257
Distance traversed by fibronectin = 3.92
V nm
Correct
The distance traversed is given by the equation:
Distance traversed (cm) =
4x Diffusion Coefficient (cm /s) x time (s)
Remember to convert the time in milliseconds into seconds by dividing by 1000.
The distance in cm can then be converted to nm by multiplying by 1×10'.
b Determine the expected and actual ratio of the diffusion coefficients, and determine whether the size difference accounts for the difference in the diffusion coefficients (D.
(The M, of rhodopsin and fibronectin are 40000 and 460000 Da respectively.)
Expected D(rhodopsin:fibronectin) =
Actual D(rhodopsin:fibronectin) =
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Does the size difference account for the difference in diffusion coefficients in these two proteins?|
Transcribed Image Text:LRoterences Protein lateral motion is much slower than that of lipids because proteins are larger than lipids. Also, some membrane proteins can diffuse freely through the membrane, whereas others are bound or anchored to other protein structures in the membrane. The diffusion coefficient for the membrane protlein fibronectin is approximately 7.00x1013 cm/sec, whereas that for rhodopsin is about 3.00x10 cm/sec. a Calculate the distance traversed (in nm) by cach of these proteins in 55.0 msec. Distance traversed by rhodopsin = 257 Distance traversed by fibronectin = 3.92 V nm Correct The distance traversed is given by the equation: Distance traversed (cm) = 4x Diffusion Coefficient (cm /s) x time (s) Remember to convert the time in milliseconds into seconds by dividing by 1000. The distance in cm can then be converted to nm by multiplying by 1×10'. b Determine the expected and actual ratio of the diffusion coefficients, and determine whether the size difference accounts for the difference in the diffusion coefficients (D. (The M, of rhodopsin and fibronectin are 40000 and 460000 Da respectively.) Expected D(rhodopsin:fibronectin) = Actual D(rhodopsin:fibronectin) = Previous Next Does the size difference account for the difference in diffusion coefficients in these two proteins?|
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