Question #3: *
1 point
3. In which group are the spheres of Earth listed in
order of in...
Question #3: *
1 point
3. In which group are the spheres of Earth listed in
order of increasing density? (1) atmosphere, hydro-
sphere, lithosphere (2) hydrosphere, lithosphere,
atmosphere (3) lithosphere, hydrosphere, atmos-
phere (4) lithosphere, atmosphere, hydrosphere
Option 1
Option 2
Option 3
Option 4
Answers: 3
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When plants use sunlight to make food, the energy of sunlight is
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Biology, 22.06.2019 08:30
Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass
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Biology, 22.06.2019 19:00
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, 22.06.2019 20:00
Add solid urea to a beaker of water. the beaker gets very cold. is δh favorable or
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