Initially, the myrtle warbler and audubon's warbler were considered two different species. these birds have now been reclassified as eastern and western forms of a single species. which of the following pieces of evidence would warrant this reclassification? . a. the two forms interbreed successfully where their habitats overlap.. b. the two forms live in habitats with similar terrain and temperatures.. c. the two forms eat the same type of wood grubs and flying insects.. d. the two forms display very similar physical traits such as coloration and tail-shape.

Anton created a chart listing different types of materials. which best complete the chart?

If a force of 40 newtons moves a cart a distance of 9 meters, the work done is nm. if the same force moves the same cart three times that distance, the work done is nm.

Penicillin is hydrolyzed and thereby rendered inactive by penicillinase (also known as β-lactamase), an enzyme present in some resistant bacteria. the mass of this enzyme in staphylococcus aureus is 29.6 kd. the amount of penicillin hydrolyzed in 1 minute in a 10-ml solution containing 10-9 g of purified penicillinase was measured as a function of the concentration of penicillin. assume that the concentration of penicillin does not change appreciably during the assay. penicillin(μm) amount hydrolyzed(nmol) 1 0.11 3 0.25 5 0.34 10 0.45 30 0.58 50 0.61 (a) plot v0 versus [s] and 1/v0 versus 1/[s] for these data. does penicillinase appear to obey michaelis-menten kinetics? if so, what is the value of km? (b) what is the value of vmax? (c) what is the turnover number of penicillinase under these experimental conditions? assume one active site per enzyme molecule.