Why Do We Fall ill Test - 15

Fomite-borne diseases are diseases, which are transmitted by inanimate objects such as towels, utensils, crockery, handled by the affected person. Tetanus is not a fomite-borne disease. It is caused when open wounds are exposed to soil.

Hence, the correct answer is option A.

Tuberculosis is a human disease that occurs because of a particular type of bacterial infection.

The correct answer is A.

Why alternatives B and D are wrong:

Measles and polio occur because of viral infection.

Why alternative C is wrong:

Malaria occurs because of protozoan infection.

Egg is high in proteins, while egg yolk contains vitamin D.

The correct answer is C.

Why alternative A is wrong:

Wheat germ contains mainly vitamin E instead of vitamin D. Hence, this alternative is incorrect.

Why alternative B is wrong:

Potatoes (or tubers) are rich in vitamin C and vitamin B₆ instead of vitamin D. Hence, this alternative is incorrect.

Why alternative D is wrong:

Tomatoes contain vitamin B₆ instead of vitamin D. Hence, this alternative is incorrect.

Tuberculosis is a disease that occurs because of bacterial infection and can spread from one person to another through air.

The correct answer is A.

Why alternatives B and C are wrong:

Cholera and typhoid are diseases that spread through water.

Why alternative D is wrong:

Malaria is a disease that spreads through mosquitoes.

Saturated fats get accumulated near heart, minimising its area of functioning. This results in increased risk of heart diseases. Hence, high cholesterol levels and heart diseases are caused by the intake of a diet that is high on saturated fats.

Hence, the correct answer is option C.

Why alternative A is wrong:

Proteins are essential for the growth of an organism. They do not accumulate near heart, or cause high cholesterol levels and heart diseases. Hence, this alternative is incorrect.

Why alternative B is wrong:

Carbohydrates do not accumulate near heart. Intake of a diet high on carbohydrates does not cause high cholesterol levels or heart diseases. Hence, this alternative is incorrect.

Why alternative D is wrong:

Unsaturated fats do not get accumulated near heart, or cause high cholesterol levels and heart diseases. Hence, this alternative is incorrect.

Water-borne diseases can be prevented by treating water to kill microbial contaminants; by ensuring supply of safe drinking water, and proper disposal of sewage.

Vector-borne diseases can be prevented by providing a clean environment and preventing the breeding of mosquitoes.

The correct answer is D.

Excess of intake of alcohol cannot cause low blood pressure.

The correct answer is B.

Why alternatives A, C and D are wrong:

High blood pressure, cirrhosis, and heart diseases are caused by an excessive intake of alcohol, as it destroys liver and the digestive system. Hence, alternatives A, C, and D are incorrect.

Arteriosclerosis is a degenerative disease caused by the hardening of arteries.

The correct answer is C.

Why alternatives A, B and D are wrong:

Thalassemia, haemophilia, and cystic fibrosis all are genetic disorders, which can be passed on from one generation to another.

Vaccination leads to the suspension of killed microbes or substances that mimic the disease-causing microbes. Vaccines are available for a number of viral and bacterial diseases. However, a vaccine for common cold is not available as there are so many different strains of the same disease that it becomes impossible to inject all of them into the body.

The correct answer is C.

Why alternatives A, B and D are wrong:

DTP is a mixture of three vaccines. It immunizes the body against diphtheria, whooping cough, and tetanus.