The major cell infected by HIV is
Correct answer: C. Helper T-lymphocyte
- A. Leukocyte
- B. Monocyte
- C. Helper T-lymphocyte
- D. B-lymphocyte
Explanation
The correct answer is helper T-lymphocytes (option C). Leukocytes are white blood cells involved in immunity, including neutrophils, eosinophils, basophils, monocytes, and lymphocytes. Monocytes are phagocytic cells that engulf pathogens and produce cytokines. B-lymphocytes produce antibodies when activated by helper T-lymphocytes. Helper T-lymphocytes coordinate the immune response by producing cytokines that activate other immune cells, and HIV specifically targets these cells, leading to AIDS.
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Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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