OBJECTIVE LIFE SCIENCE
SIGNALLING IMMUNOLOGY CANCER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The body’s nonspecific defenses against invading pathogens include
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antibiotics.
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mucus, sweat and tears.
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antibodies.
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Killer T cells.
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Explanation:
Detailed explanation-1: -The skin and mucous membranes provide mechanical protection and only if their continuity is interrupted, bacteria and viruses can pass. Mucous, tears, and saliva contain an enzyme that is called lysozyme, which dissolves the wall of bacteria.
Detailed explanation-2: -Non-Specific Defense. Non-specific defense (innate immunity) consists of mechanisms that either keep pathogens out or destroy them regardless of their type. Non-specific defense includes mechanical barriers, chemical substances, cells and inflammation. Mechanical barriers include the skin and mucous membranes.
Detailed explanation-3: -So, the correct answer is ‘Killer T-cells’. Was this answer helpful?
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