cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 lab 7 membranes...
TRANSCRIPT
![Page 1: Cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 Lab 7 Membranes WEB.pdfLower concentration of solute (sugar) Higher concentration of sugar Selectively](https://reader030.vdocuments.us/reader030/viewer/2022041201/5d49647a88c99351108baced/html5/thumbnails/1.jpg)
![Page 2: Cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 Lab 7 Membranes WEB.pdfLower concentration of solute (sugar) Higher concentration of sugar Selectively](https://reader030.vdocuments.us/reader030/viewer/2022041201/5d49647a88c99351108baced/html5/thumbnails/2.jpg)
•! Cells constantly exchange materials with their surroundings
•! All materials entering or leaving cells pass through the plasma
membrane
www.bio.miami.edu/dana/104/pmembrane.jpg
![Page 3: Cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 Lab 7 Membranes WEB.pdfLower concentration of solute (sugar) Higher concentration of sugar Selectively](https://reader030.vdocuments.us/reader030/viewer/2022041201/5d49647a88c99351108baced/html5/thumbnails/3.jpg)
![Page 4: Cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 Lab 7 Membranes WEB.pdfLower concentration of solute (sugar) Higher concentration of sugar Selectively](https://reader030.vdocuments.us/reader030/viewer/2022041201/5d49647a88c99351108baced/html5/thumbnails/4.jpg)
![Page 5: Cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 Lab 7 Membranes WEB.pdfLower concentration of solute (sugar) Higher concentration of sugar Selectively](https://reader030.vdocuments.us/reader030/viewer/2022041201/5d49647a88c99351108baced/html5/thumbnails/5.jpg)
![Page 6: Cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 Lab 7 Membranes WEB.pdfLower concentration of solute (sugar) Higher concentration of sugar Selectively](https://reader030.vdocuments.us/reader030/viewer/2022041201/5d49647a88c99351108baced/html5/thumbnails/6.jpg)
![Page 7: Cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 Lab 7 Membranes WEB.pdfLower concentration of solute (sugar) Higher concentration of sugar Selectively](https://reader030.vdocuments.us/reader030/viewer/2022041201/5d49647a88c99351108baced/html5/thumbnails/7.jpg)
•! Set up the artificial cell and leave for 1 hour
•! Test inside solution and outside solution for presence of molecules and ions.
•! After an hour, redo tests using contents of “cell” and the solution in the beaker.
![Page 8: Cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 Lab 7 Membranes WEB.pdfLower concentration of solute (sugar) Higher concentration of sugar Selectively](https://reader030.vdocuments.us/reader030/viewer/2022041201/5d49647a88c99351108baced/html5/thumbnails/8.jpg)
![Page 9: Cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 Lab 7 Membranes WEB.pdfLower concentration of solute (sugar) Higher concentration of sugar Selectively](https://reader030.vdocuments.us/reader030/viewer/2022041201/5d49647a88c99351108baced/html5/thumbnails/9.jpg)
Hypertonic solution outside cell has higher
concentration of solute than
inside cell
Water leaves the cell
Isotonic concentration of solute same
both inside and outside cell
No net water loss or
gain
Hypotonic concentration of solute is higher
inside cell than outside; outside
is more dilute
Water enters the cell
![Page 10: Cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 Lab 7 Membranes WEB.pdfLower concentration of solute (sugar) Higher concentration of sugar Selectively](https://reader030.vdocuments.us/reader030/viewer/2022041201/5d49647a88c99351108baced/html5/thumbnails/10.jpg)
Are animal cells as resilient in changing tonicities?
Know why or why not.
![Page 11: Cells constantly exchange materials with their ...faculty.cbu.ca/cglogowski/2008 Lab 7 Membranes WEB.pdfLower concentration of solute (sugar) Higher concentration of sugar Selectively](https://reader030.vdocuments.us/reader030/viewer/2022041201/5d49647a88c99351108baced/html5/thumbnails/11.jpg)