Which of the following components is NOT involved in the phosphorus cycle?
A) Some rocks and soil
B) The atmosphere
C) Consumers
D) Decomposers
E) Producers
B
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What is the best test of an evolutionary classification?
Which of the following will NOT result in a proto-oncogene's conversion into an oncogene?
a. A mutation in the proto-oncogene's promoter that increases transcription of the gene. b. A mutation in the coding sequence of a protein that renders a protein abnormally active. c. An alteration to the p53 coding sequence rendering the p53 protein inactive. d. An introduction of new DNA sequences to a chromosome that alters the regulation of the cell cycle. e. The translocation of a proto-oncogene to a location in the cell and under the control of a more active promoter than present in the original location.
Neurons in the higher vocal center of a male finch's brain are stimulated to proliferate by testosterone
Indicate whether the statement is true or false.
Which of the following immunodeficiency disorders could possibly be treated or prevented by gene therapy during the embryological stage?
A. AIDS B. X-linked agammaglobulinemia (XLA) C. Asthma D. None of these disorders can be treated by gene therapy during the embryological stage.