In AIDS, HIV kills
Antibody molecule
T-helper cell
Bone-marrow cells
T-cytotoxic cell
B.
T-helper cell
HIV attacks a specific type of immune system cell in the body. It's known as the CD4 helper cell or T cell. When HIV destroys this cell, it becomes harder for the body to fight off other infections. When HIV is left untreated, even a minor infection such as a cold can be much more severe
Which one of the following life cycle stages of malarial parasite is responsible for relapse of malarial symptoms?
Merozoite
Sporozoite
Hypnozoite
Gametocyte
The anterior V-spot in microfilaria of Wuchereria represents
nerve ring
cervical papilla
excretory system
reproductive system
A female Anopheles mosquito can be recognised by
proboscis and palpi are long and more or less of equal length
proboscis long and palpi short
proboscis short and palpi long
Both proboscis and palpi are short
Which is the correct sequence of arrangement of types of WBC in decreasing order in terms of number per mm3 of human blood
Eosinophils > Basophils > Neutrophils
Basophils > Eosinophils > Neutrophils
Neutrophils > Eosinophils > Basophils
Eosinophils > Neutrophils > Basophils
Which of the following is related to humoral immunity?
T- lymphocyte
B- lymphocyte
I- lymphocyte
P- lymphocyte
Which stage of malarial parasite is infective to man?
Gametocyte
Merozoite
Cryptomerozoite
Sporozoite
Which one of the following life cycle stages of Wuchereria bancrofti is infective to man?
Microfilaria
1st stage larva
2nd stage larva
3rd stage larva
