The pH of the medium has no effect on the activity of the disinfectant being applied
Indicate whether the statement is true or false
FALSE
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Predict which of the following DNA oligonucleotide probes would have the highest melting temperature (Tm) when hybridizing to the target sequence 5'-GTGCCTGAATGCAATGTCA-3'
a. 3'-CACGGA-5' b. 3'-CATGGA-5' c. 3'-TTACAG-5' d. 3'-TTACTG-5'
The classification of species often leads to
a. understanding evolutionary relationships that directly and positively influence human health. b. new phylums. c. a list of names with no significance to biological function. d. new evolutionary theories. e. a decrease in the actual number of species that exist.
Which statement is NOT correct about the trp operon?
A. Tryptophan acts as the corepressor. B. The structural genes make products that are part of an anabolic pathway for the synthesis of tryptophan. C. Tryptophan binds to the repressor protein and inactivates it. D. It is normally turned off if tryptophan is present.
What percent of the parental DNA (generation 0) remains in generation 4 according to the semi-conservative model of replication?
a. 100% b. 25% c. 50% d. 75%