Each of the Following Statements About the Side Chains of Amino

question 8

Multiple Choice

Each of the following statements about the side chains of amino acid residues is true EXCEPT which one?

• A) Isoleucine, valine and tryptophan tend to be in the interior of protein molecules.
• B) Catalytically functional groups include aspartate, histidine and cysteine.
• C) Tyrosine, phenylalanine and threonine participate in hydrogen bond formation.
• D) Lysine, arginine and glutamate form ionic bonds with substrates and other protein components.
• E) Lysine, cysteine and tyrosine have pKa's higher than 7.0.

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Definitions:

Sales Volume

The quantity of units of merchandise sold or services rendered over a specific period.

Fixed Maintenance Cost

Costs that do not fluctuate with the level of production or sales, such as salaries for maintenance staff or contracts for equipment service, remaining constant over a period.

Machine-Hours

A unit of measure representing the operation of machinery for one hour, often used in manufacturing and production cost analysis.

Contribution Margin

The sum left from the revenue of sales once variable costs have been subtracted, utilized to pay for fixed expenses and create profit.