Penicillin is hydrolyzed and thereby rendered inactive by penicillinase (also known as b-lactamase), an enzyme present in some penicillin- 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 1029 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.

The answer is 5.22 mM.

Explanation:

The calculation of Vmax and Km is as follows:

y =7.6225x + 1.4602

so, when x = 0

x = 1 ÷ Vmax = 1.4602.

Vmax = 1 ÷ 1.4602 = 0.68.

Thus, Vmax of the enzyme is 0.68.

The calculation of (km) is as follows:

Y = 7.6225X + 1.4602

so, when y = 0

x = 1 ÷ Km = 5.22.

5.22 mM.

Explanation:

using y=mx+c equation

y =7.6225x + 1.4602

so, when x = 0

x = 1 ÷ Vmax = 1.4602.

Vmax = 1 ÷ 1.4602 = 0.68.

Thus, Vmax  is 0.68.

Y = 7.6225X + 1.4602

so, when y = 0

x = 1 ÷ Km = 5.22.

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.