Which of the following characteristics permits activated CD8 T cells to destroy any cell type harboring viable and replicating pathogens such as viruses?
a. The pathogen is located in extracellular spaces.
b. CD8 T cells enable macrophages to kill intracellular pathogens.
c. Pathogen-derived peptides bind MHC class I molecules in endocytic vesicles found ubiquitously in most cell types.
d. MHC class II molecules are expressed ubiquitously by most nucleated cells.
e. MHC class I molecules are expressed ubiquitously by most nucleated cells.
E
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The GAS is composed of three stages: alarm reaction, resistance, and ____
a. exhaustion/recovery b. homeostasis c. distress d. optimal performance e. compliance
The AH50 differs from the CH50 because the AH50
a. measures the alternative pathway and the CH50 measures the classical pathway b. measures the classical pathway and the CH50 measures the alternative pathway c. uses rabbit red blood cells and the CH50 uses sheep red blood cells with antibody d. measures the alternative pathway and the CH50 measures the classical pathway and uses rabbit red blood cells and the CH50 uses sheep red blood cells with antibody e. measures the classical pathway and the CH50 measures the alternative pathway and uses rabbit red blood cells and the CH50 uses sheep red blood cells with antibody
When is the use of biofeedback is most effective?
Cellular adaptation to environmental stress (i.e., hot environment) is called
A. homeostatic conversion. B. acclimation. C. adaptation. D. accommodation.