What climatological phenomenon is the result of the Earth's tilted axis?
a. day and night
b. snow
c. drought
d. seasons
e. clouds
D
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The process of examining the genomes of animals and plants for useful genes is
A. gene prospecting. B. genetic engineering. C. phenotypic labeling. D. cloning.
Which function of cellular membranes is critical to the ionic and molecular organization of cells?
a. the controlled transport of ions and molecules across the membrane
b. cell-cell binding c. recognition of other cells as being "foreign" or "self" d. reception of chemical signals from other cells e. participation in metabolic reactions
According to the classifications used by most genetic ancestry testing companies, which human population group includes Native Americans?
A. Pacific Islanders B. Asians C. Africans D. Europeans
Auxins in plants are known to affect which of the following processes?
I) gravitropism of shoots II) maintenance of seed dormancy III) phototropism of shoots IV) inhibition of lateral buds V) apical dominance A) only I and II B) only I, III and V C) only I, III, IV and V D) only II, III, IV and V