Which essential element is found in ATP and nucleic acids?
a. Calcium
b. Sodium
c. None of these choices
d. Manganese
e. Phosphorus
e
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Based on the figure above, what can you conclude about the history of land use in the southern Yucatàn?
A) Massive soil erosion caused the Mayan population to crash. B) Reduction in forest cover caused the Mayan population to crash. C) As Mayan population increased, deforestation increased, probably leading to increased soil erosion. D) This Mayan population practiced sustainable development.
bio refers to a gene that governs a cell's ability to synthesize biotin from inorganic precursors. The
designation bio+ indicates:
a. that the allele is normal. b. that the allele is the mutant allele. c. that the bacterium is biologically active. d. that the bacterium is biologically inactive. e. that the bacterium cannot make its own biotin.
The urinary system does all of the following, EXCEPT:
A. glucose generation and regulation B. regulate blood volume C. removal of damaged or old red blood cells D. regulate plasma concentrations of electrolytes E. secretion of hormones & Vitamin D
Which phase(s) of meiosis occur in a similar manner to mitosis?
A. Prophase I and Prophase II B. Prophase I, Metaphase I, Anaphase I. C. Prophase II, Metaphase II, Anaphase II, Telophase II D. Prophase I, Metaphase, I, Prophase II, Metaphase II E. Prophase I, Anaphase I