Which Is the Best Explanation of How Complement-A Group of About

question 78

Multiple Choice

Which is the best explanation of how complement-a group of about 20 inactive enzymes in the plasma and on cell surfaces-is activated and produces cytolysis?

• A) Complement is "turned on" by the presence of bacteria.
• B) Complement is activated by antibodies to "drill a hole" into foreign cells, thus causing cytolysis.
• C) Complement causes vasoconstriction and inhibits phagocytosis.
• D) Both A and B are correct.

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Definitions:

Development Expenditures

Costs incurred in the design, implementation, and testing of new products or processes, which may be capitalized or expensed, depending on their nature and future benefit.

Straight-Line Method

A technique for calculating depreciation or amortization that uniformly distributes the cost of an asset across its lifespan.

Depreciation Expense

The allocation of the cost of a tangible fixed asset over its useful life, reflecting the asset's consumption, wear and tear, or obsolescence.

Installation Costs

Expenses related to setting up or installing equipment, machinery, or other assets for operational use.