What are characteristics of allosteric enzymes? a. they tend to have a hyperbolic curve of vs. [s]. b. they may have binding sites for regulatory molecules that are separate from active sites. c. they conform to michaelis–menten kinetics. d. they interconvert between a more active form and a less active form. e. they generally have more than one subunit.

Option (B), (D) and (E).

Explanation:

Allosteric enzymes may be defined as the enzymes that an change their  conformation ensemble after binding to an effector molecule. They play important role in cell signalling and metabolic pathways.

Allosteric enzymes do not obey Michaelis- Menten kinetics. They have two binding sites regulatory site and active site. They contain multiple subunit and exist in more active and less active form depending on the type of substrate and regulatory molecule.

Thus, the correct answer is option (B), (D) and (E).

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

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