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Human Physiology, 7/e
Stuart I Fox, Pierce College

Interactions between Cells and the Extracellular Environment

Critical Thinking Exercises

Please answer all questions



1

In the days before refrigeration became widespread, people would preserve meat in powdered salt. How would this process prevent most types of decay?
2

The liver stores many molecules of glucose in the form of one molecule of glycogen. How does this relate to tonicity?
3

Design an experiment to prove that cells are using active transport rather than osmosis or some other passive means.
4

Lethal injections during a legal execution include a high concentration of KCl. Why is this salt included?