Question

Match column I with column II, and choose the correct combination from the options given below.

	Column I		Column II
a	Auto-immunity	1	Rheumatoid arthritis
b	Allergic disease	2	Asthma
c	Contact inhibition	3	Normal cells
d	Metastasis	4	Malignant tumours

• A. $\begin{array}{cccc}\text{a}& \text{b}& \text{c}& \text{d}\\ 2& 1& 3& 4\end{array}$
• B. $\begin{array}{cccc}\text{a}& \text{b}& \text{c}& \text{d}\\ 1& 2& 4& 3\end{array}$
• C. $\begin{array}{cccc}\text{a}& \text{b}& \text{c}& \text{d}\\ 1& 2& 4& 3\end{array}$
• D. $\begin{array}{cccc}\text{a}& \text{b}& \text{c}& \text{d}\\ 1& 2& 3& 4\end{array}$

Answer 1

The correct option is D $\begin{array}{cccc}\text{a}& \text{b}& \text{c}& \text{d}\\ 1& 2& 3& 4\end{array}$

Auto-immunity -rheumatoid arthritis
Auto-immunity in an immune system disorder where the body attacks its own cells. Rheumatoid arthritis is an auto-immune disease that causes inflammation of joints of the hands and feet.

Allergic disease- asthma
Allergy is an exaggerated immune response to an antigen. Asthma is a type of allergy where the trachea and bronchioles swell up, becoming narrow causing difficulty in breathing.

Contact inhibition- normal cells
Contact inhibition is the property exhibited by the normal cells in which they inhibit their growth when they come in contact with other cells. Normal cells therefore, form a monolayer in the culture plate.

Metastasis- malignant tumours
Cancer cells of a malignant tumour show metastasis where they spread to other parts of the body tending to form tumours in new places as well. This results in the spread of cancer.
Correct option (a).