Which one of the following type of T cells secrete cytotoxin which triggers destruction of the pathogen's DNA?
Correct answer: D. Cytotoxic T-cells
- A. Helper T-cells
- B. Suppressor T-cells
- C. Memory T-cells
- D. Cytotoxic T-cells
Explanation
These cells secrete cytotoxin which triggers destruction of the pathogen's DNA or perforin which is a protein that creates holes in the pathogens plasma membrane. The holes cause the pathogen to lyse (rupture).
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Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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Which one of the following is called cytotoxic cells?
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