Biology, 13.01.2022 05:30 khaekhae10
Glands of the exocrine system release their hormones
a. directly onto the hormones target cells
b. directly onto the skins epithelial cells
c. into the bloodstream
d. into attached ducts
Answers: 1
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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.
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Procedure in pregnancy to have access to fetus. what do you call this procedure?
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Glands of the exocrine system release their hormones
a. directly onto the hormones target cells
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