Which Statement About Natural Killer Cells Is True

question 120

Multiple Choice

Which statement about natural killer cells is true?

• A) They are a class of phagocytes.
• B) They can distinguish between normal cells and cells that have been infected by viruses.
• C) They release antibodies.
• D) They inject defensins into targeted cells.
• E) They are unable to recognize cells that form tumors.

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Definitions:

Merchandising Business

A commercial enterprise that purchases goods in a finished condition for the purpose of resale without further manufacturing.

Contra Accounts

Accounts used in the accounting ledger to reduce the value of a related account when the two are netted together.

Perpetual Inventory

An inventory management system where updates are made continuously as inventory items are bought and sold.

Cash Sales

Transactions in which the buyer pays for a good or service at the time of the sale with cash or its equivalent.