Lab 3: Cell Transport Mechanisms and Permeability
The purpose of this lab is to teach me simulating dialysis, simulating facilitated diffusion, simulating osmotic pressure, simulating filtration, and simulating active transport.
If I increase the concentration...
February 20, 2013
The major objective of the experiment was to test the effect of the concentration gradient on the diffusionrate. It was hypothesized that the greater the stronger...
Open-ended Lab: Osmosis and Diffusion in Dialysis Tubing Name(s): Background: It is very difficult to measure or see osmosis actually occurring in cells because of the small size of most cells. However, if an artificial membrane that acts in some ways like a real plasma membrane could be found, than...
Diffusion Osmosis LabReport
- Osmosis is the movement of the water molecules from a region of higher water potential to a region of lower water potential
- Water potential is a measure of the kinetic energy of water molecules. As water molecules are constantly moving in a random...
The Occurrence of Osmosis and Diffusion in Artificial and Living Cells |
David Michael |
March 24, 2011 |
Partners: Fady Guirguis, Klaus Blandon, and Mauricio Rodriquez. |
* Table of Contents
I. Abstract 3
II. Introduction 4
III. Materials and Methods 9
IV. Results 15
OSMOSIS TROUGH A SELECTIVELY PERMEABLE MEMBRANE
Introduction: Molecules have kinetic energy. This causes the molecules of the cell to move around and bump into each other. Osmosis is a special kind of diffusion where water moves through a selectively permeable membrane (a membrane that...
Hypothesis: Osmosis will occur when there is an uneven distribution of solute in a solvent. The higher the solute in solvent, then there will be a higher rate of osmosis through the diffusion gradient forming a hypertonic or hypotonic solution. Solvent with equal or no solute forms...
Computer Simulation of Cell Transport Mechanisms and Permeability:
Passive Processes and Active Processes
In this lab we will establish a difference between the two types of cell transport mechanisms and their permeability. The first type of cell transport is passive processes...
1. Did any solutes move through the 20 MWCO membrane? Why or Why not?
2. Did Na+Cl- move through the 50 MWCO membrane?
1. Are the solutes moving with or against their concentration gradient in facilitated diffusion?
2. What happened to the rate of facilitated diffusion when the number...
Activity 1: Simulating Dialysis (Simple Diffusion) LabReport
Pre-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
1. The driving force for diffusion is
You correctly answered: b. the kinetic energy of the molecules in motion.
2. In diffusion, molecules move
You correctly answered:...
Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) LabReport Pre-lab Quiz Results You have not completed the Pre-lab Quiz.
Experiment Results Predict Question: Predict Question 1: The molecular weight of urea is 60.07...
Activity 1: Simulating Dialysis (Simple Diffusion) LabReport Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The driving force for diffusion is You correctly answered: b. the kinetic energy of the molecules in motion. 2. In diffusion, molecules move You correctly answered:...
“Simulating Simple Diffusion”
“Simulating Facilitated Diffusion”
Anatomy and Physiology 2401
Dr. Denyse Jones
The objective of this experiment is to perform the simulation of the movement...
Cell Transport Mechanisms and Permeability
Lab Time/Date ___
Activity 1 Simulating Dialysis (Simple Diffusion)
1. Describe two variables that affect the rate of diffusion.
Size of material and concentration
2. Why do you think the urea...
Dialysis (Simple Diffusion) LabReport Pre-lab Quiz Results You scored 75% by answering 3 out of 4 questions correctly. 1. The driving force for diffusion is Your answer : c. the membrane transport protein. Correct answer: b. the kinetic energy of the molecules in motion. 2. In diffusion, molecules move...
LabReport 1: Cell Transport Mechanisms and Permeability Using PhysioEx 8.0
The purpose of these experiments is to examine the driving force behind the movement of substances across a selective or semiperpeable plasma membrane. Experiment simulations examine...
Lab partners : |
by Liliya DeLia |
This experiment was performed to demonstrate the process of osmosis and to show visible as well as quantitative evidence proving that osmosis occurred. In this lab, we will be conducting...
and hypotonic in pond water. In conclusion, selective membrane permeability is very important for a cell.
Substances, such as water, ions, and molecules needed for cellular processes, can enter and leave cells by a passive process such as diffusion. Diffusion is random movement of molecules...