Human Diseases — Set 7
Biology · मानव रोग · Questions 61–70 of 70
Which of the following is an example of a water-borne disease?
Correct Answer: B. Typhoid
Typhoid fever is a bacterial infection caused by Salmonella typhi spread via contaminated water. It causes high fever, stomach pain, and headache. Proper sanitation and water treatment are the main ways to prevent it.
Deficiency of Vitamin B1 (Thiamine) leads to which specific disease?
Correct Answer: A. Beri-beri
Beri-beri is the classic disease associated with Thiamine deficiency, affecting heart and nerves. It was famously linked to diets consisting only of white, polished rice. Whole grains and pulses are essential to prevent this condition.
Which of the following is caused by a deficiency of proteins in children's diet?
Correct Answer: A. Kwashiorkor
Kwashiorkor is a form of severe protein malnutrition often seen in weaned children. It is characterized by edema (swelling), particularly in the abdomen and feet. Providing a protein-rich diet can help reverse the early stages.
In which disease does the patient develop an irrational fear of water (Hydrophobia)?
Correct Answer: B. Rabies
Hydrophobia is a symptom of late-stage rabies, where swallowing water causes intense spasms. The virus is usually transmitted through the bite of a rabid animal. Once clinical symptoms appear, the disease is almost 100% fatal.
Goitre is an enlargement of which gland in the human body?
Correct Answer: B. Thyroid
The thyroid gland, located in the neck, swells up when it cannot produce enough hormones due to iodine lack. This swelling is visible as a lump in the throat area. Iodized salt is the primary method used to prevent this enlargement.
Which part of the body is primarily affected by the disease 'Leukaemia'?
Correct Answer: B. Blood
Leukaemia is a type of cancer that starts in the bone marrow and affects the blood. It results in the production of an abnormal number of white blood cells. These cells are not able to fight infection properly like normal cells.
The deficiency of which vitamin is responsible for the 'excessive bleeding' from wounds?
Correct Answer: D. Vitamin K
Vitamin K is essential for blood clotting, also known as coagulation. Without it, the body cannot stop bleeding effectively after an injury. Leafy greens and broccoli are significant dietary sources of Vitamin K.
What is the causative agent of the disease 'Tuberculosis'?
Correct Answer: C. Bacteria
Tuberculosis (TB) is caused by a bacterium called Mycobacterium tuberculosis. It primarily attacks the lungs but can spread to other parts of the body. It remains one of the top infectious killers in many parts of the world.
Which of the following is caused by the deficiency of Iron in the blood?
Correct Answer: B. Anaemia
Anaemia occurs when there are not enough healthy red blood cells to carry oxygen. Iron is a key part of haemoglobin, which gives blood its red color and oxygen-binding ability. Iron deficiency is the most common nutritional disorder globally.
Which disease is caused by the Plasmodium parasite?
Correct Answer: C. Malaria
Malaria is caused by Plasmodium parasites (P. vivax, P. falciparum, P. malariae, P. ovale) transmitted through the bite of infected female Anopheles mosquitoes. P. falciparum causes the most severe form of malaria.