If high amounts of sulfanilamide are in the presence of an enzyme whose substrate is paba, what outcome is expected? paba products will increase in concentration. the substrate will destroy the inhibitor. sulfanilamide products will be in higher concentration. the enzyme will stop functioning.

Why are lipids and proteins free to move laterally in membranes?

You are studying several alleles of an e. coli helicase gene. one allele, called rsr, confers resistance to rs2014, an antibiotic that works by inhibiting helicase activity. bacteria with the rss allele are sensitive to rs2014. another allele, called ts-, produces a temperature sensitive mutation of the helicase. in bacteria with the ts- allele, helicase is inactivated at 42 °c but functions normally at 37 °c. helicase functions normally at both temperatures in bacteria with the ts allele. you obtain the following data while testing four strains of e. coli at different temperatures and doses of rs2014. each number represents the percentage of maximal dna synthesis. based on this data, assign the appropriate genotype to strains a–d in the spaces provided

These are groups of reproducing populations that are insulated from other groups