Inflammatory Biological Markers Are Clinically Useful in a Number of Different

question 56

Multiple Choice

Inflammatory biological markers are clinically useful in a number of different ways, one being the assessment of disease activity in conditions such as systemic lupus erythematosus (SLE) .  A new inflammatory marker is being investigated in patients with active SLE flares.  When the blood level of the new marker (in mg/L) is plotted against the C-reactive protein (CRP) level (also in mg/L) , the following plot is obtained: Based on the plot, the correlation coefficient between the 2 variables is closest to which of the following values?

• A)+0.8
• B)+0.2
• C)0
• D)−0.2
• E)−0.8

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Definitions:

Semiarid Zones

Regions characterized by light rainfall, usually between 10 and 20 inches per year, often resulting in scanty vegetation and a steppe climate.

Terrestrial Biomes

are large community units, distinguished by their predominant vegetation and are adapted to specific climate conditions on Earth, such as forests, deserts, and grasslands.

Alpine Tundra

A biome found in the high mountain regions of the world, above the tree line, characterized by windswept landscapes, low temperatures, and minimal vegetation.

Tree Line

The highest elevation or latitude line beyond which trees are unable to grow due to unsuitable environmental conditions, such as cold temperatures or lack of moisture.