The Complement System Is

question 51

Multiple Choice

The complement system is

• A) a set of proteins involved in innate but not acquired immunity.
• B) a set of proteins secreted by cytotoxic T cells and other CD8 cells.
• C) a group of proteins that includes interferons and interleukins.
• D) a group of antimicrobial proteins that act together in a cascade fashion.
• E) a set of proteins that act individually to attack and lyse microbes.

---

Definitions:

Marginal Revenue

The extra revenue earned by selling an additional unit of a product or service.

Total Revenue

The sum total of financial gains a company secures from its commercial transactions or service provisions during a certain interval.

Quantity Demanded

The aggregate quantity of a product or service that buyers are prepared to buy at a distinct price point, during a specific time frame.

Marginal Revenue

The extra revenue generated by the sale of an additional unit of a product or service.