As the sun is setting, you notice bats coming out of a cave to begin a period of heavy activity. In the very early
morning, several days later, you notice them entering the cave to sleep. Which circadian rhythm would best explain this
observation?
a. crepuscular
b. nocturnal
c. diurnal
d. lunar
e. asynchronous
b
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The microtubule-associated protein ________ provides motion toward the minus end of the microtubule.
Fill in the blank(s) with the appropriate word(s).
In comparing the development of the unwebbed foot of the chicken and webbed foot of a duck, what differences are there in the expression of BMP4 and gremlin?
A. Chicken feet only express BMP4 while duck feet only express gremlin. B. BMP4 is expressed similarly in both chicken and duck feet, while gremlin is only expressed in duck feet. C. Gremlin is expressed similarly in both chicken and duck feet, while BMP4 is only expressed in between chicken toes. D. Both BMP4 and gremlin are expressed similarly in chicken and duck feet. E. BMP4 is expressed similarly in both chicken and duck feet, while gremlin is not expressed between the toes of chicken feet.
The chemical reactions associated with metabolism
a. are energy absorbing. b. convert energy with 100% efficiency. c. are energy absorbing and energy releasing. d. are energy releasing. e. do not give off heat.
There are more species of _____________ than there are species of plants.
a. beetles b. mammals c. crustaceans d. flies e. bees