Social Studies, 17.07.2019 00:00, bessieyounger1211

Penicillinase, cellulase, and amylase are examples of

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Biology, 22.06.2019 19:00, admierewebb

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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Biology, 24.07.2019 14:00, lexib4

In humans, the stomach secretes: (select all that apply.) cellulase. hydrochloric acid. amylase. pepsin, an enzyme that digests proteins. enzymes that digest lipids.

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Chemistry, 07.10.2019 20:00, angellynn50

Penicillinase, also known as β‑lactamase, is a bacterial enzyme that hydrolyzes and inactivates the antibiotic penicillin. penicillinase follows simple michaelis–menten kinetics and reaches half its maximal rate of 6.8×10−10 µmol⋅min−1 when the penicillin concentration is 5.2×10−6 m. what would happen to the initial reaction velocity, , of penicillinase if the penicillin concentration were 10.4×10−6 m?

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History, 14.10.2019 12:30, kiki3002

Amylase is an enzyme that has the ability to break down starch, a polysaccharide, into smaller disaccharides. in the last project, you saw that two types of amylase function in the human digestive system, salivary amylase and pancreatic amylase. salivary amylase and pancreatic amylase are released by two accessory organs of the digestive system. in what structures do the enzymes actually chemically digest food?

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