Which of the Following Statements Regarding C1 Inhibitor (C1INH)is False

question 16

Multiple Choice

Which of the following statements regarding C1 inhibitor (C1INH) is false? (Select all that apply.)

• A)C1INH belongs to a family of serine and cysteine protease inhibitors called the serpins.
• B)C1INH inhibits C1r but not C1s,so partial serine protease activation is achieved in the classical complement pathway.
• C)C1INH is cleaved by C1.
• D)When bound to C1 as a pseudosubstrate,it activates the protease activity of C1.
• E)Heterozygous individuals who have a single-gene defect in C1INH cannot make sufficient quantities of the gene product and must receive recombinant C1INH by infusion.

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Definitions:

Perpetual Inventory System

An inventory management method where updates to inventory records are made in real-time following each receipt or sale of inventory items.

Periodic Inventory System

An inventory accounting system where the inventory is updated in the accounting records periodically, typically at the end of an accounting period, rather than after each transaction.

Cost of Goods Sold

The direct costs attributable to the production of the goods sold in a company, including material and labor expenses.

Operating Expense

This refers to the costs associated with the normal day-to-day operations of a business, excluding costs directly related to product manufacturing or service delivery.