An Immune Response Begins When a ________ Is Activated by Binding

question 19

Multiple Choice

An immune response begins when a ________ is activated by binding to both a foreign antigen and a self antigen on an antigen presenting cell's plasma membrane.

• A)killer T lymphocyte
• B)B lymphocyte
• C)plasma cell
• D)helper T lymphocyte

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Definitions:

Activity Measure

An allocation base in an activity-based costing system; ideally, a measure of whatever causes the costs in an activity cost pool.

Average Actual Selling Price

The mean price at which goods or services have been sold, calculated over a specific period or volume of sales.

Spending Variance

The difference between how much a cost should have been, given the actual level of activity, and the actual amount of the cost. A favorable (unfavorable) spending variance occurs because the cost is lower (higher) than expected, given the actual level of activity for the period.

Static Planning Budget

A budget based on a fixed level of activity that does not change with actual levels of output, sales, or other activity measures.