{ "nid": "50", "details": "\x3cspan class=\"title\"\x3eOsmoBeaker™: Diffusion\x3c/span\x3e\x3cbr/\x3e\n\x3cspan class=\"description\"\x3eThis lab confronts common misconceptions about diffusion using engaging simulated molecular-level experiments. The lab first focuses students\' attention on how individual molecules move under different conditions.  It then sets up a fun experiment that allows them to explore whether nerve cells could use diffusion to move materials from the cell body to the synapses at the tips of their axons. Students run races in axons of different lengths and record how long it takes for \x26quot;peptide\x26quot; molecules to diffuse down their length. They also run \x26quot;races\x26quot; between peptides that start among high concentrations of other peptides and peptides that start surrounded only by water. By the end of the lab, students not only uncover the need for cellular and organ level transport mechanisms, but also overcome some commonly held misconceptions (see our \x3ca href=\"/?q=publications\"\x3ePublications page \x3c/a\x3e for details).\r\n\x3c/span\x3e\x3cbr/\x3e\n\x3cbr/\x3e\n\x3cstrong\x3eLevel\x3c/strong\x3e: Intro\x3cbr/\x3e\n\x3cstrong\x3eKey Concepts\x3c/strong\x3e: Diffusion; Overcoming common misconceptions; Randomness\x3cbr/\x3e\n\x3cstrong\x3eCourses\x3c/strong\x3e: Intro Bio: Molecular; Intro Bio: Non-majors; Osmosis-Diffusion\x3cbr/\x3e\n          \x3cbr/\x3e\x3ca href=\"/search_result_details/brief/50\" class=\"node_brief\"\x3eRead less\x3c/a\x3e        \x3cbr/\x3e\x3ca href=\"/cart/add/50\"\x3e + Add to course collection\x3c/a\x3e  \x3c/span\x3e \x3c!-- description --\x3e\n" }