Membrane Permeability (pH sensor)

Students use a pH sensor to explore which substances can and cannot pass through a cell membrane model.

Supports NGSS Disciplinary Core Idea LS1.AThe cell membrane is represented by a semi-permeable dialysis tubing sac filled with a substance. Students will look for evidence to determine whether starch, iodine, or hydrogen ions are able to pass through the membrane. Students can detect non-visible H+ ion movement by observing changes in pH with a pH sensor, in addition to visible changes when starch and iodine come into contact with one another.

Grade Level: High School

Subject: Biology

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Membrane Permeability (pH Sensor) 533.53 KB
Membrane Permeability (pH Sensor) 369.64 KB
Membrane Permeability (pH Sensor) Sample Data 13.50 KB

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Membrane Permeability
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Membrane Permeability

Understand semi-permeable membranes through this exploration of dialysis tubing's permeability for H+ ions, OH- ions, Starch, and Iodine. Supports PASCO's...

Featured Equipment

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Each tray can store up to 10 wireless sensors; sensors sold separately.

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This Starter Lab Station includes the wireless temperature, pressure, pH and carbon dioxide sensors used to perform key activities from the Essential Biology Lab Manual.

Support

Many lab activities can be conducted with our Wireless, PASPORT, or even ScienceWorkshop sensors and equipment. For assistance with substituting compatible instruments, contact PASCO Technical Support. We're here to help.

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