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
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Close interactions that have evolved over time between species are called ____
Fill in the blank with the appropriate word.
Bicarbonate ions are formed from a reaction
involving ___ and ___.
a. oxygen...carbon dioxide b. water...oxygen c. water...carbon dioxide d. glucose...water e. glucose...oxygen
The appearance of __________ marks the onset of
gastrulation in humans. a. a notochord b. the primitive streak c. mesoderm d. neural folds e. somites
Who was the Augustinian monk that conducted a decade of experiments on the garden pea, eventually showing that traits are passed from parents to offspring in predictable ways?
A) Aristotle B) Alfred Wallace C) Gregor Mendel D) Francis Crick E) Hippocrates