Diffusion, Osmosis and Cell Membranes
The student will receive one point for preparing any sketches and two points for completing all five sketches. Labels on the sketches will earn another point, and one point will be awarded for sketches that are neatly and carefully drawn. One point will also be given for written observations of the cells under each set of conditions.
Answers to Conclusion Questions
Three points will be awarded for answering all five questions. Another point may be earned for answers that indicate accurate observation. Yet another point may be earned for a reasonable explanation of the changes based on the observations (question 5). A point will be deducted if answers are not in complete sentences.
Point totals will be recorded as part of the overall grade for the
The University of Arizona
Department of Biochemistry and Molecular Biophysics
General Biology Program for Secondary Teachers