58 points matching: from lessons on mitosis and meiosis 1) period when cell is not engaged in division - 2) forms the pole of the spindle apparatus - 3) thread-like substance in the nucleus which carries genetic info - 4) the membrane the surrounds the nucleus of a cell- 5) method of cytokinesis in animals - 6) period of mitosis in which chromosomes move to opposite poles of cell - 7) a system of fibers that go from one end of the cell to the other - 8) having chromosomes that occur singly, not in matched pairs - 9) matched units of dna containing genetic information - 10)produces daughter cells with fewer chromosomes than the parent cell - choose from: spindle apparatus, homologous chromosomes, nuclear envelope, interphase, centriole, meiosis, chromatin, anaphase, furrowing, haploid

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.