Description
Human Anatomy and Physiology 9th Edition Marieb Hoehn Instructors Manual
| ISBN-13: | 9780321743268 |
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Below you will find some free nursing test bank questions from this test bank:
1
E XXEERRCCIISSE
Cell Transport Mechanisms
and Permeability
Advance Preparation/Comments
1. A “#” symbol after “rate” data indicates that equilibrium was not reached for that solute.
Answers to Questions/Experimental Data
Pre-lab Quiz in the Lab Manual
1. diffusion
2. b. it contains more nonpenetrating solutes than the interior of the cell.
3. d. vesicular transport
4. phagocytosis
5. active
Activity 1: Simulating Dialysis (Simple Diffusion) (pp. PEx-4–PEx-6)
Predict Question 1: The correct prediction is “no.” Urea is too large to diffuse through this membrane.
Predict Question 2: The correct prediction is that glucose will be able to diffuse through the membrane.
Albumin, however, is too large and will not diffuse.
Chart 1: Dialysis Rates (average diffusion rate in mM/sec)
Membrane MWCO
Solute
20
50
100
200
+
–
Na
Cl
0.0000
0.0150
0.0150
0.0300
Urea
0.0000
0.0094
Albumin
0.0000
Glucose
0.0040
Activity Questions:
1. No, none of the solutes tested passed through the 20 MWCO membrane. They were all too large.
2. Yes, Na
+
–
Cl
diffused through the 50 MWCO membrane.
3. Increasing the size of the solute slowed down the rate of diffusion.
4. Increasing the solute concentration increased the rate of diffusion.
Activity 2: Simulated Facilitated Diffusion (pp. PEx-6–PEx-8)
Predict Question 1: Increasing the number of protein carriers will increase the glucose transport rate.
Predict Question 2: Adding Na
+
–
Cl
will have no effect on the glucose transport rate because the carrier is only
transporting glucose through the membrane.
