Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
In the immune system of body: (1) only protein serve as immunogens for cell mediated immunity (2) lipids and nucleic acid do not serve as immunogens (3) immunogeniciry is an intrinsic property of a macromolecule (4) immune system recognises bacterial products and fungal parasitesA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 1,2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: C
Solution :
The system of animal body, which protects it from various infectious agents and cancer is known as immune system. The complement system is a defensive system consisting of plasma proteins that attack and destroy the microbes. The term 'complement' refers to a system of factors occurring innormal serum, that are activated characteristically by antigen antibody interaction and sub-sequently mediate a number of biologically significant consequences. Animals are continually exposed to various foreign particles, including infectious agents like bacteria, viruses, fungi and parasites lipids and nucleic acid do not serve as immunogens.
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