Last Summer a Bee Stung You for the First Time

question 30

Multiple Choice

Last summer a bee stung you for the first time. You developed only a small area of redness and swelling at the site. However, if you are stung again and have a severe reaction that occurs more rapidly, you know that this is due to the activation of

• A) tissue macrophages.
• B) helper T cells.
• C) complement.
• D) memory cells.
• E) cytotoxic T cells.

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Definitions:

Annual Payments

Payments made once a year, often in the context of loan repayments or investment incomes.

Interest

is the cost of borrowing money or the payment received for lending money, typically expressed as an annual percentage of the principal.

Debt

An amount of money borrowed by one party from another, often used to make large purchases that cannot be funded by other means.

Present Value

The current price of a future monetary sum or a succession of cash flows, taking into account a certain rate of interest.