The Quick Response of the Immune System to a Second

question 24

Multiple Choice

The quick response of the immune system to a second infection is due to the _____,a feature of the immune system as demonstrated by the success of vaccines.

• A) activation of macrophage cells
• B) suppression of suppressor cells
• C) T and B memory cells
• D) high levels of antigen
• E) new cytotoxic T cell.

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Definitions:

Continental Crust

The thick, buoyant part of the Earth's crust that forms the continents, composed mainly of granitic rocks.

Asthenosphere

The semi-fluid layer of the Earth's mantle beneath the lithosphere that allows for the movement of tectonic plates.

Lithosphere

The rigid outer layer of the Earth, including the crust and upper mantle, involved in plate tectonics and continental drift.

Topographic Profile

A cross-sectional view of a portion of Earth's surface, showing elevation, relief, and slope of the terrain along a specific line.