The spindle apparatus becomes visible during
a. anaphase.
b. metaphase.
c. interphase.
d. prophase.
e. telophase.
D
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Which mechanoreceptor(s) responds to vibrations?
a. free nerve endings only b. Pacinian corpuscle only c. Ruffini endings only d. free nerve endings and Meissner's corpuscle e. Pacinian corpuscle and Ruffini endings
In its normal location in plant cells, tonoplast intrinsic protein apparently directly allows
a. water flow only into the chloroplast. b. water flow into the cell across the cell wall. c. water flow out of the cell across the cell wall. d. water flow both into and out of the vacuole. e. water flow only out of the chloroplast.
There are no infectious agents that can penetrate intact skin.
Answer the following statement true (T) or false (F)
Which of the following are polar molecules?
A) water B) phospholipids C) hydrocarbons D) all of the above E) none of the above