The major cell infected by HIV is
Correct answer: C. Helper T-lymphocyte
- A. Leucocyte
- B. Monocyte
- C. Helper T-lymphocyte
- D. B-lymphocyte
Explanation
Leukocytes, or white blood cells, are immune system cells that defend the body against infections. They include neutrophils, eosinophils, basophils, monocytes, and lymphocytes. Monocytes are phagocytic leukocytes that mature in the blood, engulf pathogens, and produce cytokines to regulate immune responses. Lymphocytes include helper T-lymphocytes and B-lymphocytes. Helper T-lymphocytes coordinate the immune response by producing cytokines that activate B-lymphocytes and cytotoxic T-lymphocytes; they are the primary target of HIV, whose attack on these cells leads to AIDS. B-lymphocytes, activated by helper T-cells, produce antibodies that specifically recognize and neutralize foreign antigens
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About Biodiversity and Variety of Life
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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