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

Biology & Microbiology

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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.

Biology & Microbiology

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

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology