Laboratory exercise on active transport.
D000818:Animals; D001693:Biological Transport, Active; D008317:Malpighian Tubules / Q000378:metabolism; D009036:Moths / Q000378:metabolism; D010637:Phenolsulfonphthalein / Q000031:analogs & derivatives / Q000378:metabolism; D010827:Physiology / Q000193:education
C007016:chlorophenol red; D010637:Phenolsulfonphthalein