BIO 203 EXAM 1 QUESTIONS WITH CORRECT ANSWERS

Chemical synaptic transmission can be viewed as a specialized form of


a) Contact signaling


b) Paracrine signaling


c) Electrical synaptic transmission


d) (a) and (b) are both correct; (c) is incorrect


e) (a), (b) and (c) are all correct

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b) Paracrine signaling




Osmolarity and Osmosis: Considering these solutions, which of the following
statements is/ are correct?


Solution A: 0.1 M NaCl
Solution B: 100 mM CaCl2
Solution C: 200 mM Sucrose


a) Solution A is hypoosmotic compared to solution B and to solution C


b) Solution B is hyperosmotic compared to solution A and solution C


c) Solution C is hyperosmotic compared to solution B


d) both a) and b) are correct, and c) is incorrect


e) a), b) and c) are all correct


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b) Solution B is hyperosmotic compared to solution A and solution C




Assume a cell with ENa = +58 mV. ENa would become less positive if ...


a) Na+ concentration in the ICF decreased


b) Na+ concentration in the interstitial fluid increased


c) Na+ concentration in the ECF decreased