INTRO.TO GENERAL,ORGAN...-OWLV2 ACCESS
12th Edition
ISBN: 9781337915977
Author: Bettelheim
Publisher: CENGAGE L
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Chapter 20, Problem 77P
Interpretation Introduction
Interpretation:
The difference between a facilitated transporter and an active transporter should be identified.
Concept Introduction:
Facilitated diffusion allows charged and polar molecules like carbohydrates, amino acids, nucleosides, and ions, to cross the plasma membrane.
The process by which the movement of dissolved molecules take place from lower concentration to higher concentration across a cell membrane.
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(a
4 shows scanning electron microscope (SEM) images of extruded
actions of packing bed for two capillary columns of different diameters,
al 750 (bottom image) and b) 30-μm-i.d. Both columns are packed with the
same stationary phase, spherical particles with 1-um diameter.
A) When the columns were prepared, the figure shows that the column with
the larger diameter has more packing irregularities. Explain this observation.
B) Predict what affect this should have on band broadening and discuss your
prediction using the van Deemter terms.
C) Does this figure support your explanations in application question 33?
Explain why or why not and make any changes in your answers in light of
this figure.
Figure 4 SEM images of
sections of packed columns
for a) 750 and b) 30-um-i.d.
capillary columns.³
fcrip
= ↓ bandwidth Il temp
32. What impact (increase, decrease, or no change) does each of the following conditions have on the individual
components of the van Deemter equation and consequently, band broadening?
Increase temperature
Longer column
Using a gas mobile phase
instead of liquid
Smaller particle stationary phase
Multiple Paths
Diffusion
Mass Transfer
34. Figure 3 shows Van Deemter plots for a solute molecule using different column inner diameters (i.d.).
A) Predict whether decreasing the column inner diameters increase or decrease bandwidth.
B) Predict which van Deemter equation coefficient (A, B, or C) has the greatest effect on increasing or
decreasing bandwidth as a function of i.d. and justify your answer.
Figure 3 Van Deemter plots for hydroquinone using different column inner diameters (i.d. in μm). The data was
obtained from liquid chromatography experiments using fused-silica capillary columns packed with 1.0-μm particles.
35
20
H(um)
큰 20
15
90
0+
1500
100
75
550
01
02
594
05
μ(cm/sec)
30
15
10
Chapter 20 Solutions
INTRO.TO GENERAL,ORGAN...-OWLV2 ACCESS
Ch. 20.2 - Prob. 20.1QCCh. 20.4 - Prob. 20.2QCCh. 20.5 - Prob. 20.3QCCh. 20.7 - Prob. 20.4QCCh. 20.8 - Prob. 20.5QCCh. 20.9 - Prob. 20.6QCCh. 20.10 - Prob. 20.7QCCh. 20.13 - Prob. 20.8QCCh. 20 - Prob. 1PCh. 20 - 21-2 Why are fats a good source of energy for...
Ch. 20 - 21-3 Proteins, nucleic acids, and carbohydrates...Ch. 20 - Prob. 4PCh. 20 - Prob. 5PCh. 20 - Draw the line-angle structure for the following:...Ch. 20 - Prob. 7PCh. 20 - What is the difference between the -system and...Ch. 20 - Prob. 9PCh. 20 - Prob. 10PCh. 20 - Prob. 11PCh. 20 - Prob. 12PCh. 20 - For the diglycerides in Problem 12 , predict which...Ch. 20 - 21-8 Predict which acid in each pair has the...Ch. 20 - Prob. 15PCh. 20 - Prob. 16PCh. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - 21-13 Rank the following in order of increasing...Ch. 20 - Prob. 20PCh. 20 - Prob. 21PCh. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - Prob. 24PCh. 20 - Prob. 25PCh. 20 - Prob. 26PCh. 20 - Prob. 27PCh. 20 - Prob. 28PCh. 20 - 21-29 Name all the groups of complex lipids that...Ch. 20 - Prob. 30PCh. 20 - Prob. 31PCh. 20 - Prob. 32PCh. 20 - Prob. 33PCh. 20 - Prob. 34PCh. 20 - Prob. 35PCh. 20 - Prob. 36PCh. 20 - Prob. 37PCh. 20 - Prob. 38PCh. 20 - 21-39 How does VLDL become LDL?Ch. 20 - Prob. 40PCh. 20 - Prob. 41PCh. 20 - Prob. 42PCh. 20 - Prob. 43PCh. 20 - 21-44 Describe the difference in structure between...Ch. 20 - Prob. 45PCh. 20 - Prob. 46PCh. 20 - Prob. 47PCh. 20 - 21-48 List all of the functional groups that make...Ch. 20 - 21-49 Explain how the constant elimination of bile...Ch. 20 - Prob. 50PCh. 20 - Prob. 51PCh. 20 - 21-52 What are the chemical and physiological...Ch. 20 - 21-53 How does aspirin, an anti-inflammatory drug,...Ch. 20 - Prob. 54PCh. 20 - Prob. 55PCh. 20 - For each of the processes below, tell whether it...Ch. 20 - Prob. 57PCh. 20 - Prob. 58PCh. 20 - Prob. 59PCh. 20 - Prob. 60PCh. 20 - Prob. 61PCh. 20 - Prob. 62PCh. 20 - Prob. 63PCh. 20 - Prob. 64PCh. 20 - Prob. 65PCh. 20 - Prob. 66PCh. 20 - Prob. 67PCh. 20 - Prob. 68PCh. 20 - Prob. 69PCh. 20 - 21-68 What is the role of taurine in lipid...Ch. 20 - Prob. 71PCh. 20 - 21-70 How many different triglycerides can you...Ch. 20 - Prob. 73PCh. 20 - Prob. 74PCh. 20 - Prob. 75PCh. 20 - Prob. 76PCh. 20 - Prob. 77PCh. 20 - 21-76 Which part of LDL interacts with the LDL...Ch. 20 - Prob. 79PCh. 20 - Prob. 80PCh. 20 - Prob. 81PCh. 20 - Prob. 82PCh. 20 - Prob. 83PCh. 20 - 21-82 Suggest a reason why the same protein system...Ch. 20 - Prob. 85PCh. 20 - Prob. 86PCh. 20 - 21-85 Which of the following statements is (are)...Ch. 20 - Prob. 88PCh. 20 - 21-87 Which statements are consistent with the...Ch. 20 - Prob. 90PCh. 20 - Prob. 91PCh. 20 - 21-90 To what extent do lipids and carbohydrates...Ch. 20 - Prob. 93PCh. 20 - Prob. 94PCh. 20 - Prob. 95PCh. 20 - Prob. 96PCh. 20 - Prob. 97PCh. 20 - Prob. 98PCh. 20 - Prob. 99PCh. 20 - Prob. 100PCh. 20 - Prob. 101PCh. 20 - 21-100 What are the functions of a cell membrane?...Ch. 20 - 21-101 Glycerophospholipids tend to have both a...Ch. 20 - Prob. 104P
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