Human Health and Diseases Chapter-Wise Test 17

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following diseases is caused by a protozoan?

Typhoid
Tuberculosis
Malaria
Pneumonia
3

Malaria is caused by Plasmodium, a protozoan transmitted by female Anopheles mosquitoes.

Which organ is primarily affected by pneumonia?

Heart
Lungs
Liver
Kidneys
2

Pneumonia affects the alveoli in the lungs, causing inflammation and fluid accumulation, leading to respiratory issues.

Which of the following statements about interferons is incorrect?

Interferons help protect cells from viral infections.
Interferons act as signaling proteins.
Interferons function by attacking bacteria directly.
Interferons enhance immune responses.
3

Interferons do not directly attack bacteria; they help protect nearby cells from viral infections.

Which type of cancer is characterized by the uncontrolled proliferation of white blood cells?

Carcinoma
Sarcoma
Leukemia
Lymphoma
3

Leukemia is a type of blood cancer in which abnormal white blood cells multiply uncontrollably.

Which of the following is a common symptom of malaria?

Jaundice
High fever with chills
Joint pain
Skin rash
2

Malaria is characterized by periodic high fever with chills due to the release of toxins by Plasmodium species.

Which of the following is an example of an antigen-presenting cell (APC)?

Neutrophil
Macrophage
Erythrocyte
Basophil
2

Macrophages act as antigen-presenting cells (APCs) by processing and presenting antigens to T-cells.

Which of the following statements about vaccination is incorrect?

Vaccination stimulates an immune response to create memory cells.
Vaccination provides passive immunity.
Live-attenuated vaccines contain weakened pathogens.
Toxoid vaccines contain inactivated toxins.
2

Vaccination provides **active** immunity by stimulating the immune system, not passive immunity.

Which of the following substances is considered an immunosuppressant?

Aspirin
Cyclosporin A
Paracetamol
Ibuprofen
2

Cyclosporin A is an immunosuppressant drug that helps prevent organ transplant rejection.

Which disease is caused by the bacterium Mycobacterium tuberculosis?

Typhoid
Tuberculosis
Pneumonia
Diphtheria
2

Tuberculosis (TB) is caused by Mycobacterium tuberculosis and primarily affects the lungs.

Which of the following statements about autoimmune diseases is incorrect?

Autoimmune diseases occur when the immune system attacks its own body cells.
Autoimmune diseases are caused by bacterial infections.
Multiple sclerosis is an autoimmune disease.
Rheumatoid arthritis is an autoimmune disease.
2

Autoimmune diseases are not caused by bacterial infections; they result from immune system dysfunction.

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