Human Health and Diseases Chapter-Wise Test 9

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which vaccine is produced using recombinant DNA technology?

BCG vaccine
Hepatitis B vaccine
Polio vaccine
Smallpox vaccine
2

The Hepatitis B vaccine is produced using recombinant DNA technology in yeast cells.

Which of the following statements about cytokines is correct?

Cytokines are signaling molecules that regulate immune responses.
Cytokines function as digestive enzymes.
Cytokines are only involved in allergic reactions.
Cytokines only function in the nervous system.
1

Cytokines are signaling molecules that regulate immune responses, inflammation, and communication between immune cells.

Which of the following statements about leukocytes is incorrect?

Leukocytes include neutrophils, eosinophils, and basophils.
Leukocytes are involved in immune responses.
Leukocytes transport oxygen in the blood.
Leukocytes help in defending the body against pathogens.
3

Leukocytes do not transport oxygen; that function is performed by red blood cells (erythrocytes).

Which type of immunity is acquired after an infection and subsequent recovery?

Innate immunity
Passive immunity
Active immunity
Artificial immunity
3

Active immunity is acquired after an infection when the immune system produces memory cells for future protection.

Which of the following is a common withdrawal symptom in drug addicts?

Increased appetite
Decreased heart rate
Anxiety and sweating
Improved concentration
3

Withdrawal symptoms in drug addicts include anxiety, sweating, nausea, and tremors.

Which of the following is a characteristic feature of auto-immune diseases?

The body fails to produce antibodies
The immune system attacks its own cells
Infection by bacteria causes immune suppression
The immune system becomes inactive
2

Auto-immune diseases occur when the immune system mistakenly attacks the body’s own cells, as seen in rheumatoid arthritis.

Which of the following statements about lymphatic vessels is correct?

Lymphatic vessels transport oxygenated blood.
Lymphatic vessels absorb fats from the intestine.
Lymphatic vessels produce red blood cells.
Lymphatic vessels have thick muscular walls like arteries.
2

Lymphatic vessels play a role in fat absorption by transporting dietary fats from the intestines to the bloodstream.

Which of the following drugs is commonly used for immunosuppression in organ transplantation?

Aspirin
Cyclosporin A
Paracetamol
Ibuprofen
2

Cyclosporin A is an immunosuppressive drug used to prevent organ transplant rejection.

Which of the following is an example of passive immunity?

Vaccination
Injection of pre-formed antibodies
Natural infection and recovery
Development of memory cells
2

Passive immunity occurs when pre-formed antibodies are directly introduced into the body, such as in tetanus antitoxin administration.

Which of the following is a characteristic feature of malignant tumors?

Localized growth
Uncontrolled proliferation and metastasis
No effect on surrounding tissues
Benign nature
2

Malignant tumors exhibit uncontrolled proliferation and metastasis, spreading to other parts of the body.

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