Chapter 7: Human Health and Diseases — Online MCQ Test
ZOOLOGY · CLASS 12th · Tamil Nadu State Board
Practice Chapter 7: Human Health and Diseases with a free chapter-wise online MCQ test.
This chapter covers: Exploring human pathology this chapter covers infectious diseases caused by bacteria viruses protozoa and fungi alongside lifestyle disorders cancer mechanics and drug abuse..
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 7: Human Health and Diseases — Important Questions & Answers
Which of the following is a bacterial disease?
- A. Malaria
- B. Dengue
- C. Typhoid
- D. Amoebiasis
Answer: C. Typhoid
Typhoid is caused by the bacterium Salmonella typhi. The other diseases are caused by a protozoan or viruses.
Typhoid is caused by the bacterium Salmonella typhi. The other diseases are caused by a protozoan or viruses.
The vector responsible for transmitting malaria is the ______.
- A. female Anopheles mosquito
- B. male Culex mosquito
- C. housefly
- D. bedbug
Answer: A. female Anopheles mosquito
Malaria is transmitted by the bite of the female Anopheles mosquito. It carries the Plasmodium parasite from one person to another.
Malaria is transmitted by the bite of the female Anopheles mosquito. It carries the Plasmodium parasite from one person to another.
Which of the following is a correct match?
- A. AIDS - Plasmodium
- B. Dengue - Bacterium
- C. Tuberculosis - Mycobacterium tuberculosis
- D. Ringworm - Virus
Answer: C. Tuberculosis - Mycobacterium tuberculosis
Tuberculosis is caused by Mycobacterium tuberculosis. The other options are mismatched with their causative agents.
Tuberculosis is caused by Mycobacterium tuberculosis. The other options are mismatched with their causative agents.
In HIV infection, which of the following cells is primarily affected?
- A. Red blood cells
- B. Helper T-lymphocytes
- C. Platelets
- D. Neurons
Answer: B. Helper T-lymphocytes
HIV primarily attacks Helper T-lymphocytes (CD4 cells), weakening the immune system. This makes the person vulnerable to opportunistic infections.
HIV primarily attacks Helper T-lymphocytes (CD4 cells), weakening the immune system. This makes the person vulnerable to opportunistic infections.
A person uses narcotic drugs repeatedly and becomes unable to function normally without them. This condition is best termed
- A. immunity
- B. tolerance only
- C. drug dependence
- D. vaccination
Answer: C. drug dependence
Drug dependence is the state in which a person requires the drug to feel normal and may experience withdrawal symptoms without it. It is a major feature of drug abuse.
Drug dependence is the state in which a person requires the drug to feel normal and may experience withdrawal symptoms without it. It is a major feature of drug abuse.