1. Osmosis Lab

2. Osmosis
Osmosis- Movement of water from high to low concentration until equilibrium is reached.
Once equilibrium is reached molecules move in equal concentrations across the cell membrane.
When molecules are in equal concentration both inside and outside the cell membrane we are in isotonic conditions.

3. Osmosis Lab Pure water is in the cup.
In dialysis tubing is sucrose solutions of varying concentrations.
Sucrose cannot move across the semi-permeable membrane.

4. Osmosis Lab Molarity-how much sucrose is in a given solution.
0.0 M-0% sugar
0.2 M 20% sugar
0.4 M 40% sugar
0.6 M 60% sugar
0.8 M 80% sugar
1.0 M 100% maximum amount of sugar you can put in a solution and still have it dissolve.

5. Weighing bags
Looking at change in mass. Weighed the bags of sucrose before and after. %change in mass= 𝐹𝑖𝑛𝑎𝑙 𝑀𝑎𝑠𝑠−𝐼𝑛𝑖𝑡𝑖𝑎𝑙 𝑀𝑎𝑠𝑠 𝐼𝑛𝑖𝑡𝑖𝑎𝑙 𝑀𝑎𝑠𝑠 × 100%

6. Developing a Hypothesis
Example: As the molarity of the sucrose solutions increase, the percent change in mass in the dialysis tubing should increase as well because water moves from high to low concentrations therefore more water should enter the tubes with increasing molarity.

7. Background Information
Things to include
Osmosis
Diffusion
Hypertonic, Isotonic, hypotonic
Molarity
Selectively permeable membranes

8. MLA Format
Osmosis Lab

9. MLA Format Full Website
Quick reference cheat sheet for MLA

10. Citing your book in bibliography
Last, First M. Book. City: Publisher, Year Published. Levine, J.& Miller, M. R. Biology. Saddle River, Nj: Pearson Education, 2002.

11. How to cite Lab handout or manual in bibliography
Cite as a book if author is available. If not
Lastname, Firstname (or Department name). "Title". Lab handbook or handout. School or organization associated with manual. Organization location. Manual date (use n.d. if no date is available). Medium of publication.
Example:
Science. "Manual for PHYS 1402". Lab handout. Medford High School . Medford Ma Print.

12. Citing a Lecture in Bibliography
Last Name, First Name. “Presentation Title.” Venue, City. Date Conducted. Lecture Type. Solomon, Melissa. “Movement Through Cell Membranes.” Medford High School, Medford. October Lecture.

13. In text citations Need: Last name and page number at end OR
Name in sentence with page number at end in ( ).

14. IN text citations for book
Examples: Osmosis in the diffusion of water (Levine 154). Levine and Miller found that water can move through a cell membrane(178). book “Osmosis is the diffusion of water from an area of high concentration to low concentration” (Miller & Levine 211).  quote from book

15. In text citations for lecture
Driscoll said that “Osmosis is awesome” (Movement Thorough Membrane 1).”  in text quote from lecture
Osmosis is the diffusion of water (Driscoll 1).  lecture

16. In text for lab sheets
“Sugar Lab” stated glucose is a monosaccharide (1).  in text for lab sheet Or
Glucose is a monosaccharide (“Sugar Lab” 1).

17. Should I keep citing after each sentence?
When you reference the same source more than once in the same paragraph, and no other source intervenes, you may give the in-text citation just once at the end of the paragraph. If, however, this technique creates any ambiguity about your reference, it is better to cite the source every time you reference it.

18. Important
If you use easy bib they leave blanks and you should go back and fill in all info if you want to receive full credit