A binding site for RNA polymerase is called a _____
a. gene
b. promoter
c. codon
d. protein
B
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Limbs like arms, legs, and the fins of whales are part of the:
A. axial skeleton. B. appendicular skeleton. C. mobile skeleton. D. central skeleton.
Four of the five answers listed below describe human characteristics. Select the exception
a. development b. direction by DNA c. response to change d. ability to produce nutrition e. maintenance of internal environment
The greenhouse effect is a natural and important phenomenon because it
A) removes smog from affected areas. B) maintains the surface temperature on Earth. C) reverses the effect that CFCs have on the ozone layer. D) decreases the amount of carbon dioxide in the stratosphere. E) reverses the effects of deforestation.
Lactose intolerance is the result of
a. drinking high-fat milk. b. eating a large amount of yogurt. c. low lactase activity. d. a high-fiber diet.