Answer: Mycobacterium tuberculosis.
- A Mycobacterium tuberculosis
- B Staphylococcus aureus
- C Salmonella typhi
- D Plasmodium falciparum
Correct answer: A. Mycobacterium tuberculosis
Explanation: Tuberculosis (TB) is caused by Mycobacterium tuberculosis, an acid-fast bacterium. It primarily affects the lungs but can spread to other organs. It spreads through respiratory droplets.
The Plasmodium parasite needs both hosts: the female Anopheles mosquito injects sporozoites while biting (infecting the human liver and RBCs, causing the malaria fever cycle), then picks up gametocytes from an infected person's blood, completing the parasite's sexual stage inside the mosquito.
Concept context
Pathogens, infectious diseases, non-infectious diseases, drugs, cancer, and public health. High NEET importance.