Micro RNA therapy is based on the premise that
A. miRNA molecules function to regulate gene expression, usually by initiating transcription; an over-production of miRNA can be replaced thereby promoting necessary protein production.
B. miRNA molecules function to regulate gene expression, usually by promoting translation; a non-functional miRNA can be repaired thereby reducing unwanted protein production.
C. miRNA molecules function to regulate protein production, usually by inhibiting translation; a hyperactive miRNA can be replaced thereby reducing unwanted proteins.
D. miRNA molecules function to regulate gene expression, usually by inhibiting transcription; a non-functional miRNA can be replaced thereby reducing unwanted protein production.
Answer: D
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The Peter Rabbit stories are an example of
A. ethology. B. instinct. C. anthropomorphism. D. sociobiology.
Scientists measured the pressure in the xylem of redwood trees at different heights and found that the higher they made their measurements, the lower the pressure. They extrapolated this to a pressure of zero, and concluded that the tallest a tree could grow is 122-130 meters. The tallest known tree on Earth is 112.7 meters. What assumption were the scientists making to conclude that when pressure was zero the plant could grow no further?
A. Any leaves above that point would not receive sunlight. B. Any leaves above that point would not receive water. C. Stems above that point could not transport sugars in their xylem. D. Transpiration would be less than uptake of water from the xylem. E. The osmotic pressure would be greater than gravity.
During S phase, _____
a. chromosomes condense b. the cell produces proteins in preparation for mitosis c. the cytoplasm begins to divide d. DNA is replicated e. sister chromatids separate from each other
Members of this group of protozoa are decomposers responsible for these infectious diseases: giardiasis (gastroenteritis), trichomoniasis (sexually transmitted disease), and trypanosomiasis (sleeping sickness—Trypanosoma gambiense).
A. flagellated protozoa B. sarcodina C. ciliates D. All of these answers are correct.