Wetlands purify water by removing sediments and pollutants
Indicate whether the statement is true or false
TRUE
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Some viruses consist only of a protein coat surrounding a nucleic acid core. If you wanted to radioactively label the nucleic acids separately from the protein, you would use radioactive _____
A) sulfur B) carbon C) nitrogen D) phosphorus
Imagine five forest communities, each with one hundred individuals distributed among four different tree species (W, X, Y, and Z). Which forest community would be most diverse?
A) 25W, 25X, 25Y, 25Z B) 40W, 30X, 20Y, 10Z C) 50W, 25X, 15Y, 10Z D) 70W, 10X, 10Y, 10Z E) 100W, 0X, 0Y, 0Z
There are more species of beetles than any other animal. How many species of beetles have been described?
a. About 50,000 b. About 100,000 c. About 300,000 d. More than one million
Which of the following events is not associated with the development of the female gametophyte?
A. A single parenchyma cell will enlarge to become a megaspore mother cell. B. The female gametophyte will contain three antipodal cells. C. The nucleus of the megaspore divides mitotically to produce eight nuclei. D. The megaspore undergoes meiosis producing four haploid megaspores. E. All of these are associated with the development of the female gametophyte.