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Digestion made easy

The gut or alimentary canal can be considered as an extension or inversion of the epithelium or outer skin, as it is physiologically not part of the body. It runs from the mouth from the rectum, and varies in thickness. It has the following functions (comments in brackets for my Yorkshire-born counterparts):

Ingestion (eetin’ an’ swallowin’ [...]

Osmolar concentration of a potato

Presented with raw potato how would you carry out an experiment to determine the concentration of the potato cell in molar strength?
The experiment was set up to be as fair as possible. Then the potato chips were cut into 15 cylinders using a cork cutter and then cut to a length of exactly 4cm [...]