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Diffusion Through a Non-Living Membrane

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This simple experiment will demonstrate the semipermeable nature of the cell membrane. Students will observe that some substances pass freely across a membrane, while other substances cannot pass through the membrane. This lab has a very simple materials list, and it works every time. Analysis questions are thought-provoking and require critical thinking skills. Answer key is included.

Materials needed are: Dialysis Tubing, String, Glucose Solution, Glucose Test Strips, Beakers, Starch Solution, Iodine

Your download will include student handouts that are ready to be copied and passed out to your students. Each will include: Title, Introduction, Purpose, Procedure, Student Data Pages, Answers, and Teacher Preparation Notes.

NOTE: This product is also included in a large, bundled unit lesson plan and can be viewed here: Cell Structure and Function Complete Bundled Unit Plan

I have included an editable Word document and a pdf copy of the lab.

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Amy Brown Science Stuff

K-12 Subject:

Science, Biology, General Science

Grade Level(s):

Sixth, Seventh, Eighth, Ninth, Tenth, Homeschooler

Teaching Duration:

90 Minutes

Type of Resource:

Activities, Laboratory

Answer Key:

Included

# of Pages/Slides:

SAMPLE IMAGES OF THIS ITEM

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FILE DETAILS

Compressed Zip File Be sure that you have an application to open this file type before downloading and/or purchasing.

1457.61 KB | 5 Pages

$2.25

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FEEDBACK

lwiseman1306

perfect

October 21, 2012

Science Stuff (TpT Seller)

I really appreciate your wonderful feedback. Thank you so much! Enjoy the lab!
Amy

October 21, 2012

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4.0

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4.0

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Total:

4.0

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QUESTIONS AND ANSWERS:

Science Rules (TpT Seller)

Science stuff--where do you get dialysis tubing? Thanks! Pacific wave.

November 30, 2011

Science Stuff (TpT Seller)

I order it each year along with the rest of the lab supplies for my school. I have ordered from Carolina Biological, Flinn Scientific, Wards. I do not know of where it might be purchased locally, though. If you don't have time to order some, try plastic sandwich bags. They will work just fine. You just have to make sure that they are tightly sealed. The sandwich bags are kind of fun....the students realize that their sandwich is not really sealed up!!

November 30, 2011

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