Biology : Human Health and Disease

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

Tuberculosis is caused by

• Mycobacterium sp.

• Aspergillus sp.

• Clostridium sp.

• Vibrio sp.

Which one of the following life cycle stages of Wuchereria bancrofti is infective to man?

• Microfilaria

• 1^st stage larva

• 2^nd stage larva

• 3^rd stage larva

Which of the following is related to humoral immunity?

• T- lymphocyte

• B- lymphocyte

• I- lymphocyte

• P- lymphocyte

Which one of the following immunoglobulins is found as pentamer?

• IgG

• IgM

• IgA

• IgE

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 one of the following life cycle stages of malarial parasite is responsible for relapse of malarial symptoms?

• Merozoite

• Sporozoite

• Hypnozoite

• Gametocyte

In AIDS, HIV kills

• Antibody molecule

• T-helper cell

• Bone-marrow cells

• T-cytotoxic cell

Which stage of malarial parasite is infective to man?

• Gametocyte

• Merozoite

• Cryptomerozoite

• Sporozoite

The anterior V-spot in microfilaria of Wuchereria represents

• nerve ring

• cervical papilla

• excretory system

• reproductive system