Why is mother's milk considered the most appropriate food for a new born infant?
Colostrum contains several antibodies (especially IgA) which are absolutely essential for developing resistance for the new-born babies.
What are interferons? How do interferons check infection of new cells?
In response to viral infections our body produces glycoproteins called interferons. Such type of barriers of innate immunity is called cytokine barrier. Interferons protect the non-infected cells from further viral infection.
In the figure, structure of an antibody molecule is shown. Name the parts $A, B$ and $C$.
$$ \text { Structure of an antibody molecule } $$
If a regular dose of drug or alcohol is not provided to an addicted person, he shows some withdrawal symptoms. List any four such withdrawal symptoms.
The withdrawal symptoms are
(i) anxiety
(ii) shakiness
(iii) nausea
(iv) sweating
Why is it that during changing weather, one is advised to avoid closed, crowded and air conditioned places like cinema halls etc?
During changing weather one is advised to avoid crowded places, because changing seasons are the time when infectious agents are more prevalent as moist condition favoures pathogen to grow fast and people are more vulnerable as their body system is busy in adapting the changing environmental conditions of temperature humidity, etc and they get infected to there pathogen easily.