Question

Diseases such as plague, malaria, typhoid etc., which are transmitted from person to person are
A. Congenital diseases
B. Metabolic disorders
C. Communicable diseases
D. Degenerative diseases

Answer 1

A disease is a particular abnormal disorder that has a detrimental effect on the structure or function of all or part of the body and is not due to any immediate external injury. Diseases are also considered to be medical disorders associated with unique symptoms and signs. The disease can be caused by external causes, such as pathogens or internal dysfunctions.

Complete Answer:
- Congenital diseases are those, which are present right from birth.
- Metabolic disorders are because of abnormal reactions (chemical) occurring in the body which disrupts the normal process.
- The degenerative disease is as a result of a continuous process which is based on the degenerative processes taking place in the cell, the affected tissues or organs that will result in deterioration.
- The communicable diseases are the diseases which spread from an infected person to another or from an infected animal to person. The diseases causing organisms are known as pathogens.
- Plague is a bacterial disease which is caused by Yersinia pestis. This is found in fleas which are ectoparasites on small mammals like rats. Malaria is transmitted by infected Anopheles mosquitoes which carry the protozoa Plasmodium.
- Typhoid is a bacterial infection which is caused by bacteria Salmonella typhi.

Thus, the correct answer is option C.

Note: Many illnesses and disorders may be avoided by a number of means. These include hygiene, good diet, proper exercise, vaccination and other self-care and public health initiatives.