The drug Fen-Phen
a. is really two drugs, fenfluramine and phentermine.
b. was never approved by the FDA in its combination form.
c. was effective in reducing weight compared to a placebo group.
d. is no longer in use because the Fen component has been banned.
e. All of the above
Answer is e. All of the above
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Which of the following is required if a researcher wants to analyze genes in different species for their homologies?
A. relatively short DNA sequences B. relatively short RNA sequences C. relatively long DNA sequences D. relatively short polypeptide sequences E. relative differences in a species' metabolomics
Although a small fraction of the citric acid used in the food and beverage industry is produced by microbial fermentation, most industrially used citric acid is derived directly from citrus fruit.
Answer the following statement true (T) or false (F)
What is the outcome of F+ X F- conjugation?
a. The F- cell receives a copy of the F factor and becomes an F+ cell. b. The F- cell receives a copy of the F factor but remains an F- cell. c. Chromosomal DNA is transferred from the F+ cell to the F- cell. d. Chromosomal DNA is transferred from the F- cell to the F+ cell. e. A genetic recombination of bacterial genes takes place.
Seventy to 90 percent of the genetic material in a gamete made in your body could be inherited from your mother. How could this be?
a. The above statement is incorrect. Fifty percent of the genetic material in your gametes comes from your father. b. You receive maternal genes through the placenta and through breast milk. c. The X chromosome is substantially larger than the Y chromosome. d. Your maternal genes kill off your paternal genes at a greater rate than your paternal genes kill off your maternal genes. e. You receive many mitochondria, which have their own genome, from your mother, but not from your father.