A, B and C are three common STDs. A and C are caused by bacteria whereas B is caused by a virus D. The virus D reduces the immunity of the infected person to such a low level that the person can die of even very mild diseases.
What is B?

A, B and C are three common STDs. A and C are caused by bacteria whereas B is caused by a virus D. The virus D reduces the immunity of the infected person to such a low level that the person can die of even very mild diseases. How can A, B and C be caused ?

A, B and C are three common STDs. A and C are caused by bacteria whereas B is caused by a virus D. The virus D reduces the immunity of the infected person to such a low level that the person can die of even very mild diseases. Out of A, B and C, which one does not have a definite cure as yet?

A, B and C are three common STDs. A and C are caused by bacteria whereas B is caused by a virus D. The virus D reduces the immunity of the infected person to such a low level that the person can die of even very mild diseases. Name the virus D?

What is the mechanism by which the AIDS virus causes deficiency of immune system of the infected person?

What is the mechanism by which the AIDS virus cause deficiency of immune system of the infected person?

Five persons A, B, C, D and E have diabetes, leukemia, asthma, meningitis and hepatitis, respectively. (a) Which of these person can donate eyes ? (b) Which of these persons cannot donate eyes ?

Eight persons A, B, C, D, E, F, G and H are seated around a circular table facing the centre. C and E are not adjacent to each other. B is on the immediate left of E. H is on the immediate right of D. There are three persons between B and H. A is adjacent to F. F is on the immediate left of C. If each person interchanges his or her position with the person seated opposite, who will be on the right of D? 1) E 2) F 3) G 4) D 5) None of these

This document has signed by two persons (a) This document (b) has signed (c) by two persons (d) No error

The gland A is attached to the wind pipe in the human body. The gland A makes and secretes a hormone B which controls the metabolism of carbohydrates, fats and proteins in the body. The non-metal element C is necessary for the formation of hormone B. The deficiency of C in the diet can cause a deficiency of hormone B in the body leading to a disease D in which the neck of a person appears to be swollen. People are advised to use salt e in cooking food so as to avoid disease D. (a) Name (i) gland A, and (ii) hormone B. (b) What is the element C? (c) Name one type of food which can provide sufficient C in the diet of a person. (d) Name (i) disease D, and (ii) salt E.