OBJECTIVE LIFE SCIENCE
SIGNALLING IMMUNOLOGY CANCER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cells manufactured in the bone marrow that create antibodies for isolating and destroying invading bacteria and viruses.
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A type of lymphocyte that kills infected body cells and cancer cells
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A type of white blood cell that can kill tumor cells and virus-infected cells; an important component of innate immunity.
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A type of white blood cell that engulfs invading microbes and contributes to the nonspecific defenses of the body against disease.
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Detailed explanation-1: -B-cells protect you from infection by making proteins called antibodies. B-cells are a type of white blood cell called lymphocytes. When your immune system detects antigens-markers that indicate a threat like a bacteria or virus has entered your body-your B-cells produce antibodies to fight the invader.
Detailed explanation-2: -Each B cell clone makes antibody molecules with a unique antigen-binding site. Initially, during B cell development in the bone marrow, the antibody molecules are inserted into the plasma membrane, where they serve as receptors for antigen.
Detailed explanation-3: -There are two main types of T-cells: Helper T-cells stimulate B-cells to make antibodies and help killer cells develop. Killer T-cells or cytotoxic T-cells directly kill cells that have already been infected by a foreign invader.