What term describes nucleotides in opposing strands of DNA that bind to each other?
A) semiconservative
B) complementary
C) conjoined
D) sister chromatids
B
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Which of the following examples is most similar to the plan that conservationists have for restoring the Florida panther population?
A. Reintroduction of captive bred California condors B. Creation of African wildcat kittens using cloning C. Reintroduction of male prairie chickens from neighboring states D. Exchange of grizzly bears between neighboring populations E. Creation of European hedgerows between stands of forest
Vitamin C is an example of what kind of helper molecule in the metabolic pathway that results in collagen?
a. Vitamin C is a coenzyme. b. Vitamin C is substrate c. Vitamin C is the active site. d. Vitamin C is a competitive inhibitor.
Which numbered item in the figure above represents a female gametophyte?
a. 1 b. 2 c. 3 d. 4 e. 5
If peach trees growing in specific mild climates of
the southern United States do not receive about 850 hours of temperatures below 40 degrees, they will not produce flowers in the spring. This effect is explained by which of the following terms? a. photoperiodism b. phototropism c. senescence d. vernalization e. dormancy