Fecal enterococci are increasingly being used as an indicator of fecal contamination in brackish and marine water because they die at a faster rate than fecal coliforms thus providing a more reliable indicator of pollution.
Answer the following statement true (T) or false (F)
False
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An individual with cystic fibrosis carrying two different mutant alleles would be a(n) ____________________ heterozygote for the disease
Fill in the blank(s) with correct word
A molecular biologist is interested in purifying a recombinant protein by His-tagging, but the protein and vector both lack histidine residues. In this case, the molecular biologist could use which of the following technique(s) to achieve purification?
A. Add a 6xHis-tag to the C-terminus of the protein B. Amplify the histidine-encoding sequence by PCR and add it to the gene of interest C. Add a series of histidine residues to the N-terminus of the protein D. All of the choices are correct.
The ____ covers approximately 11% of Earth’s land and contains numerous lakes and ponds
a. boreal forest b. tropical rain forest c. temperate rain forest d. temperate deciduous forest e. tropical dry forest
The bacterial chromosome is
A) usually circular. B) found in a nucleoid. C) found in a nucleus. D) both circular and found in a nucleoid. E) both circular and found in a nucleus.