T-Cell and B-Cell Lymphocytes Are the Primary Participants in the Immune

question 15

Multiple Choice

T-cell and B-cell lymphocytes are the primary participants in the immune response. What do they do?

• A) T-cell and B-cell lymphocytes distinguish harmful substances and ignore those natural and unique to a person.
• B) T-cell and B-cell lymphocytes respond to the body's invasion by macrophages.
• C) T-cell and B-cell lymphocytes react to the body's lack of B .12
• D) T-cell and B-cell lymphocytes distinguish harmful treatments from curative treatments.

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Definitions:

Direct Materials

These are the raw materials that are directly incorporated into a finished product.

Prime Cost

The combined direct costs of raw material and labor that are directly associated with the production of a product.

Discretionary Fixed Costs

Those fixed costs that arise from annual decisions by management to spend on certain fixed cost items, such as advertising and research.

Committed Fixed Costs

Expenses that a company has to pay regardless of its level of production or sales, such as leases and long-term contracts, which cannot be easily changed in the short term.