BIOLOGY IN HUMAN WELFARE
HUMAN HEALTH AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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antigens; antibodies
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antibodies; antigens
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Either A or B
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None of the above
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Detailed explanation-1: -Lymphocyte There are two main types of lymphocytes: B cells and T cells. The B cells produce antibodies that are used to attack invading bacteria, viruses, and toxins.
Detailed explanation-2: -Cytokines and chemokines are released from a wide range of immune cells, and are essential for the communication of signals in both innate and adaptive immunity.
Detailed explanation-3: -The antibodies destroy the antigen (pathogen) which is then engulfed and digested by macrophages. White blood cells can also produce chemicals called antitoxins which destroy the toxins (poisons) some bacteria produce when they have invaded the body.
Detailed explanation-4: -Neutrophils then engulf the bacteria and destroy them (Figure 1:4). When the antibodies, complement, and neutrophils are all functioning normally, this process effectively kills the bacteria.