Cytotoxic T cells attack foreign cells or body cells infected by viruses by direct contact, and are said to confer ________ on the body tissues they defend.
What will be an ideal response?
cell-mediated immunity
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Aerobic respiration involves the oxidation of pyruvate
Indicate whether this statement is true or false.
A woman with excessive body hair, a deep voice, and an enlarged clitoris shows the outward symptoms of which hormonal dysfunction?
What will be an ideal response?
The countercurrent multiplier system
A. is found in the collecting duct. B. is assisted by hormones. C. has fluid flowing in parallel tubes in opposite directions. D. maintains the solute concentration of the medullary interstitial fluid. E. has fluid flowing in parallel tubes in opposite directions and maintains the solute concentration of the medullary interstitial fluid.
A focus of research is the effect of chemical pollutants, called estrogen mimics, on reproductive development. What condition has increased in recent years that may be due to an environmental factor such as estrogen mimics?
A. Hypospadias B. Syphilis C. Prostate cancer D. AIDS E. Male climacteric