‘Amoebiasis’ (Amoebic dysentery) is caused by
Plasmodium vivax
Entamoeba gingivalis
Entamoeba histolytica
Trypanosoma gambiense
Typhoid fever could be confirmed by
Which of the following does not cause a disease in human beings
Nicotine acts as a stimulant because it mimics the effect of
Identify $X$ and $Y$ from the following structure
In sickle cell anaemia, the death is caused when the lethal genes are present in