The net direction that an ion or molecule moves is

a. dependent upon the size of the molecule.
b. unpredictable because movement is random.
c. influenced by the temperature of the medium.
d. influenced by the membranes in the vicinity.
e. the result of concentration differences.


Answer: e

Biology & Microbiology

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involving ___ and ___.

a. oxygen...carbon dioxide b. water...oxygen c. water...carbon dioxide d. glucose...water e. glucose...oxygen

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The appearance of __________ marks the onset of

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