Human Health and Diseases
Test 2

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following substances is classified as a hallucinogen?

Heroin
Cocaine
Cannabinoids
Barbiturates
3

Cannabinoids, obtained from Cannabis sativa, are hallucinogens that affect the central nervous system.

What is the primary function of lymph nodes in the immune system?

Production of red blood cells
Filtration of lymph and activation of immune cells
Secretion of digestive enzymes
Production of platelets
2

Lymph nodes filter lymph, trap pathogens, and activate immune cells such as lymphocytes.

Which of the following is the best way to prevent dengue fever?

Using antibiotics
Eliminating mosquito breeding sites
Drinking boiled water
Taking antiviral drugs
2

Dengue is transmitted by Aedes mosquitoes, so eliminating stagnant water where mosquitoes breed is the best preventive measure.

Which of the following statements about interferons is TRUE?

They are produced by bacteria
They are used for treating bacterial infections
They help protect cells from viral infections
They are a type of antibody
3

Interferons are proteins produced by virus-infected cells to prevent the spread of viral infections.

Which of the following diseases is caused by a protozoan?

Tuberculosis
Amoebiasis
Diphtheria
Pneumonia
2

Amoebiasis is caused by the protozoan Entamoeba histolytica, which infects the intestine.

Which organ is responsible for the production of T-lymphocytes?

Bone marrow
Spleen
Thymus
Liver
3

The thymus is the primary organ responsible for the maturation of T-lymphocytes.

Which of the following statements about cancer is incorrect?

Cancer cells lose the property of contact inhibition.
Cancer cells undergo uncontrolled cell division.
Cancer cells always remain localized and do not spread.
Some viruses can cause cancer.
3

Cancer cells can metastasize, meaning they spread to other tissues and organs through the blood and lymphatic system.

Which of the following statements about autoimmune diseases is incorrect?

Autoimmune diseases occur when the immune system attacks the body's own tissues.
Autoimmune diseases can affect multiple organs in the body.
Autoimmune diseases are caused by bacterial infections.
Multiple sclerosis is an autoimmune disease.
3

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

Which of the following statements about passive immunity is incorrect?

Passive immunity provides short-term protection.
Passive immunity is acquired through the transfer of antibodies.
Passive immunity involves memory cell formation.
Passive immunity can be provided by maternal antibodies.
3

Passive immunity does not involve memory cell formation; it provides temporary protection using ready-made antibodies.

Which type of immunity is provided by vaccination?

Innate immunity
Passive immunity
Active immunity
Cytokine immunity
3

Vaccination stimulates the immune system to produce a memory response, providing active immunity.

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