Multiple Choice QuestionsOnly one of the following four ways through which AIDS can spread?
Infected needles and syringes
Through mosquito bites
Looking after AIDS patient
Shaking hands, coughing, sneezing, hugging
Active immunity development is related to
natural killer cells
memory cells
helper T cells
suppressor T cells
Filariasis is caused by
dead adult filariae
microfilariae
biting of filarial worm
presence of bacteria in filarial wall
The genetic material of rabies virus is
double stranded RNA
single stranded RNA
double stranded DNA
ssDNA
Which one of the following leucocytes transforms into macrophages
Eosinophil
Basophil
Monocyte
Lymphocyte
How many variable segments are present in the basic structure of antibody molecule?
One
Two
Three
Four
D.
Four
An antibody is a Y-shaped protein molecule that is made by a B-lymphocyte in response to a particular antigen. It consists of four polypeptide chains, two long or heavy chains and two short or light chains. Each molecule has two identical antigen binding sites which are formed by both light and heavy chains. Much of the molecule is constant but the tips of the 'Y' are variable and match precisely part of a particular antigen molecule.
In the above figure, Blue and yellow colour represents variable region on both heavy and light chain respectively.
MRI is not allowed in the following conditions except one. Identify the exception
Presence of pacemaker in the body
Pregnant women
Person suffering from stroke
Presence of metallic plate in the body for treatment of broken bones
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