As in development of normal tissue such as skin, a tumor may contain cancer ________ cells that generate large numbers of descendants
Fill in the blank with correct word.
Answer: stem
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Why does water serve as an excellent solvent?
a. Because water is polar b. Because water is cohesive c. Because water allows surface tension d. Because water stabilizes temperatures
Suppose a neuron was at rest around -65 mV when it was exposed to a neurotransmitter that caused the neuron to hyperpolarize. Which of the following could be the effect of the neurotransmitter?
What will be an ideal response?
Which of the following is not one of the four phases of sexual response?
a. orgasm b. stimulation c. resolution d. plateau e. sexual excitement
What would be the consequences if we were to reverse the direction of water flow over the gills of a fish, moving water inward past the operculum, past the gills, the out the mouth? This reversal of water flow would _____
A) reduce efficiency of gas exchange B) change the exchange of gases in the body from carbon dioxide out and oxygen in to carbon dioxide in and oxygen out C) increase the efficiency of gas exchange