Diffusion and Osmosis Lab Packet

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2.96 MB   |   22 pages

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This package of materials contains 3 labs and answer keys in both word and pdf format. These labs are appropriate for the study of diffusion and osmosis in any introductory biology class.

The Diffusion Lab introduces the student to the concept of diffusion and is an activity that in various formats has stood the test of time. Students deduce and learn that small molecules like iodine and glucose can pass thorough a semi-permeable membrane while large ones can not. Students will collect data and then answer 17 questions requiring both written responses and multiple choice format answers. The last page of this seven page lab lists possible suppliers for the relatively inexpensive materials required for this lab.

The red onion osmosis activity is a simplified version but an earlier and different version of the lab required in the Living Environment course in New York State. This six page lab activity requires students to view red onion epidermal cells in a tap/distilled water and then in a salt water solution. Students will be required to draw their observations and then answer 12 conclusion questions requiring labeled drawings, written responses, as well as multiple choice format answers.

This Sucrose Solutions and Osmosis Lab and Common Core Activity allows the teacher to use relatively inexpensive materials to study the process of osmosis in a qualitative and quantitative manner. The introduction to the lab provides reading on concepts pertaining to osmosis, including hypertonic, hypotonic and isotonic solutions with illustrated graphics for visual learners. The lab activity involves using simple materials including sucrose solutions of different concentrations to measure mass changes and determine the identity of an unknown sucrose solution. The students will be required to record and graph the collected data. This is then followed by 10 questions requiring written responses to assess student learning.

This last lab is correlated to the NGSS standards, Common Core literacy and math standards, as well as the performance indicators for the Living Environment core curriculum. Suggested teacher instructions (and time saving/cost cutting suggestions) for this nine page activity are included on the last page of this lab and should not be given to the students.
Total Pages
22
Answer Key
Included
Teaching Duration
1 Week

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Diffusion and Osmosis Lab Packet
Diffusion and Osmosis Lab Packet
Diffusion and Osmosis Lab Packet
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