How do we describe transformation in bacteria?
A) the creation of a strand of DNA from an RNA molecule
B) the creation of a strand of RNA from a DNA molecule
C) the infection of cells by a phage DNA molecule
D) semiconservative replication of DNA
E) assimilation of external DNA into a cell
Answer: E
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In nature, genes with the potential to produce serious defects are acted against and kept at a low
frequency by: a. neutral variations. b. stabilizing selection. c. disruptive selection. d. frequency dependent selection. e. natural selection.
Carbohydrates, lipids, proteins, and vitamins are all examples of
A. nutrients. B. sources of energy. C. inorganic compounds. D. catalysts.
Genetically modified (GM) salmon have now been approved for sale in the United States. What environmental concern has been expressed about these salmon? What is being considered to reduce this risk?
What will be an ideal response?
Streptococcus agalactiae is associated with which of the following diseases?
A. neonatal bacteremia B. neonatal meningitis C. neonatal pneumonia D. both neonatal bacteremia and neonatal meningitis E. neonatal bacteremia, neonatal meningitis, and neonatal pneumonia