Question

The lobed organ located near the heart and beneath the breast bone in humans is :

Large scale industrial production of citric acid for human welfare is done using the microbe :

Assertion (A) : Lymphocytes arise from bone marrow and present in the blood and lymph and serve as natural killer cells. Reason (R) : Lymphocytes migrate to thymus, where they develop into T-cells and begin to mature.

Give an account of the generalised structure of an antibody molecule produced by B-lymphocytes in response to the pathogen.