After a period of intense physical activity, how long does it take for scorpion respiration rates to return to their initial values?
a. Less than 60 seconds
b. Less than 30 minutes
c. Approximately one hour
c
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Most deserts occur near ____ latitude because of dry descending air masses
a. 0? b. 10? c. 20? d. 30? e. 40?
The moon lacks life and varies dramatically in temperature. If we could keep a layer of water spread on the surface of the moon, what effect would it have?
A) Physical conditions would remain the same. B) Because water has a high heat of vaporization, the temperatures would rise to the upper extremes. C) The temperatures would drop to the lower extremes. D) Water would absorb and hold heat and moderate the temperature extremes. E) Life would be possible, but it would have to withstand these extremes in temperature.
Some restriction enzymes leave behind "sticky ends," or tails of
A.) repeating bases. B.) exposed bases. C.) paired bases. D.) restricted bases.
Which protein is responsible for the structure and movement of cilia and flagella?
Actin Cilian Myosin Tubulin