Microbiology · Parasitology (Protozoa, Plasmodium, Helminths, Nematodes, Cestodes, Trematodes)

Toxoplasma gondii actively invades host cells, including non-phagocytic cells, by forming a moving junction and secreting proteins from which specialized organelles?

  • A Basal bodies, kinetoplasts, and glycosomes
  • B Lysosomes, peroxisomes, and glycosomes
  • C Contractile vacuoles, mitochondria, and apicoplasts
  • D Micronemes, rhoptries, and dense granules
Correct answer: D. Micronemes, rhoptries, and dense granules

Explanation

Toxoplasma gondii invades host cells using an actin-myosin motor and secretory organelles. Micronemes secrete adhesins for attachment, rhoptries secrete proteins for parasitophorous vacuole formation, and dense granules modify the vacuole after invasion. Lysosomes and peroxisomes are host organelles. Kinetoplasts are found in kinetoplastids like Leishmania.

Reference: Robbins and Cotran Pathologic Basis of Disease, 10th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.

Sponsored

Want to test yourself?

Create a free account for timed mock tests, mistake tracking, and FSRS spaced-repetition revision across 43,000+ MCQs.

Start free → Log in

More Parasitology (Protozoa, Plasmodium, Helminths, Nematodes, Cestodes, Trematodes) MCQs

See all Parasitology (Protozoa, Plasmodium, Helminths, Nematodes, Cestodes, Trematodes) MCQs →