PhysioEx Exercise 1 Activity 1
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PhysioEx Lab Report
Exercise 1: Cell Transport Mechanisms and Permeability
Activity 1: Simulating Dialysis (Simple Diffusion)
Name: Tia Cronin
Date: 3 September 2023
Session ID: session-7cb6969c-81b0-4280-b804-6389eab4aef2
Pre-lab Quiz Results
You scored 100% by answering 3 out of 3 questions correctly.
Experiment Results
Predict Questions
Stop & Think Questions
The driving force for diffusion is
You correctly answered:
the kinetic energy of the molecules in motion.
1
In diffusion, molecules move
You correctly answered:
from high concentration to low concentration.
2
Which of the following dialysis membranes has the largest pore size?
You correctly answered:
200 MWCO.
3
Predict Question 1: The molecular weight of urea is 60.07. Do you think urea will diffuse
through the 20 MWCO membrane?
Your answer:
No, not at all.
1
Predict Question 2: Recall that glucose is a monosaccharide, albumin is a protein with 607
amino acids, and the average molecular weight of a single amino acid is 135 g/mol.
Which of the following will be able to diffuse through the 200 MWCO membrane?
Your answer:
albumin only.
2
The reason sodium chloride didn't diffuse left to right is that
You correctly answered:
the membrane pore size was too small.
1
Experiment Data
Solute
MWCO
Left Solute (mM)
Right Solute
(mM)
Average
Diffusion
(mM/sec)
Na
Cl
20
8.00
0.00
0.0000
Urea
20
0.00
0.00
0.0000
Albumin
20
0.00
0.00
0.0000
Glucose
20
0.00
0.00
0.0000
Na
Cl
20
0.00
0.00
0.0000
Urea
20
9.00
0.00
0.0000
Albumin
20
0.00
0.00
0.0000
Glucose
20
0.00
0.00
0.0000
Na
Cl
50
9.00
0.00
0.0150
Urea
50
0.00
0.00
0.0000
Albumin
50
0.00
0.00
0.0000
Glucose
50
0.00
0.00
0.0000
Na
Cl
50
18.00
0.00
0.0273
Urea
50
0.00
0.00
0.0000
Albumin
50
0.00
0.00
0.0000
Glucose
50
0.00
0.00
0.0000
Na
Cl
100
9.00
0.00
0.0150
Urea
100
0.00
0.00
0.0000
Albumin
100
0.00
0.00
0.0000
Glucose
100
0.00
0.00
0.0000
Na
Cl
100
0.00
0.00
0.0000
Urea
100
9.00
0.00
0.0094
Albumin
100
0.00
0.00
0.0000
Glucose
100
0.00
0.00
0.0000
Na
Cl
200
0.00
0.00
0.0000
Glucose is a six-carbon sugar. Albumin is a protein with 607 amino acids. The average
molecular weight of a single amino acid is 135 g/mol. There is no reason to run these solutes
at the 20 MWCO because
You correctly answered:
glucose and albumin are both too large to pass.
2
The rate of diffusion for urea
You correctly answered:
is slower than that for sodium because urea is a larger molecule.
3
+
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+
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+
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+
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Bibliography
Citations & Bibliography
Sciwheel
Nitrate Standard Curve
3
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ty=0.8842x-0.8191
R²=0.9509
Q..**.
Concentration
Insert
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ww
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2. Using the equation from your graph, determine the nitrate concentration (in ppm) in each of
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