What moves the human egg through the oviduct?
A) the beating of the egg's cilia
B) rhythmic contractions of the oviduct
C) rhythmic contractions of the uterus
D) the beating of cilia in the oviduct
D
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One of the ways agricultural production of such fruits as tomatoes or cucumbers can be increased significantly is to grow them in:
A. soils rich in magnesium. B. soils rich in nitrogen. C. greenhouses supplied with extra carbon dioxide. D. greenhouses with extra oxygen. E. None of these is true.
For ions with a charge of one, which of the following is equal to one milliequivalent?
a. 0.5 millimole b. 2 millimole c. one millimole d. 0.1 millimole
Relative humidity is the
A) amount of pressure at a given temperature at which water transforms from a liquid to a gaseous state. B) amount of pressure that water vapor exerts independent of the pressure of dry air. C) temperature at which saturation vapor pressure is achieved. D) amount of water vapor in the air relative to the saturation vapor pressure.
When a muscle is stimulated prior to full relaxation of a previous contraction and the second stimulus is added to the first contraction, this phenomenon is referred to as ________
A) summation B) twitch C) fatigue D) tetanus