Using the Scale in the Diagram Below, What Is the Diameter

question 67

Multiple Choice

Using the scale in the diagram below, what is the diameter of Mercury

• A)about 240 km
• B)about 2400 km
• C)about 24,000 km
• D)about 240,000 km
• E)about \(2.4 × 10^6\) km

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Definitions:

T Cell

A type of lymphocyte that plays a central role in cell-mediated immunity, capable of directly killing infected host cells or activating other immune cells.

B Cell

A type of white blood cell that plays a significant role in the immune response by producing antibodies.

Positive Selection

A process in the immune system where developing T-cells are selected for their ability to recognize and bind to self-MHC molecules, crucial for immune response.

Lymphocytes

A type of white blood cell that is integral to the body's immune system, playing roles in both the innate and adaptive immune responses.