The Aging Immune System

question 77

Multiple Choice

The aging immune system

• A)increases its ability to respond to outside antigens.
• B)may have decreased autoimmune reactions.
• C)may have T lymphocytes with greatly increased activity.
• D)loses its ability to quickly recognize cancerous changes in cells.
• E)shows all of these changes.

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Definitions:

Range

The difference between the highest and lowest scores in a set of data.

Median

The middle value in a dataset, dividing it into two equal parts when the data is arranged in ascending or descending order.

Median

The middle value in a data set, which separates the higher half from the lower half.

Unimodal

Refers to a distribution that has a single peak or mode.