Natural Killer Cells Specifically Kill Which of the Following

question 57

Multiple Choice

Natural killer cells specifically kill which of the following?

• A) tumor cells and cells infected by microorganisms
• B) gram positive bacteria
• C) fungi and protozoa
• D) foreign transplanted tissue

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Definitions:

Opportunity Cost

The value of the next best alternative foregone as a result of making a decision.

Tractor

A type of heavy vehicle used mainly in farming to pull machinery and trailers and for plowing.

Motorcycle

A two-wheeled vehicle powered by an engine, designed for travel on public roads and often used for recreation or transportation.

Opportunity Cost

Represents the benefits an individual, investor, or business misses out on when choosing one alternative over another.