Facilitated diffusion is specific, which indicates that ____
a. a specific protein will transport certain polar or charged molecules but not others
b. only one specific integral protein per membrane is involved in this process
c. the energy molecule ATP is specifically required for transport
d. only specific hydrophobic molecules can be transported
e. transport of molecules occurs only in specific cells
ANSWER: a
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Unlike most angiosperms, Theobroma cacao flowers are produced
a. at the tips of floral shoots. b. from buds on the roots. c. from buds on the tree trunk. d. asexually. e. only on trees grown on plantations.
Consider two solutions: solution X has a pH of 4; solution Y has a pH of 7. From this information, we can reasonably conclude that _____
A) solution Y has no free hydrogen ions (H+) B) the concentration of hydrogen ions in solution Y is 1000 times as great as the concentration of hydrogen ions in solution X C) the concentration of hydrogen ions in solution X is 3 times as great as the concentration of hydrogen ions in solution Y D) the concentration of hydrogen ions in solution X is 1000 times as great as the concentration of hydrogen ions in solution Y
The process of aging is called
A) senescence. B) abscission. C) death. D) maturation. E) elongation.
Explain how the hypothalamus controls the anterior pituitary.
What will be an ideal response?