Chymotrypsin and the Other Members of the Same Protease Family

question 61

Multiple Choice

Chymotrypsin and the other members of the same protease family utilize which of the following amino acid side chains at their catalytic site?

• A) alanine, serine and lysine
• B) aspartic acid, alanine and glutamic acid
• C) aspartic acid, serine and histidine
• D) glutamic acid, alanine and histidine
• E) histidine, glutamic acid and lysine

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Definitions:

Total Tax

The combined amount of all taxes imposed by different levels of government on individuals or businesses.

Average Tax Rate

The ratio of the total amount of taxes paid to the total tax base (taxable income or spending), expressed as a percentage.

Taxable Income

The amount of an individual's or a corporation's income used to determine how much tax they owe, after exemptions and deductions are factored in.

Marginal Tax Rate

The rate of tax applied to the next dollar of taxable income, indicating the percentage of any additional income that will be taken as tax.