Cell Junctions Practice Questions
20 free Cell Junctions practice questions for the Histology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.
Questions
20 questions
All Cell Junctions questions
- Q1. Which of the following cell junctions is primarily responsible for preventing the paracellular passage of water and solutes between epithelial cells?
- Q2. The 'terminal bar' visible under a light microscope in the apical region of intestinal epithelial cells represents which complex?
- Q3. Which transmembrane protein is the most critical for maintaining the structural integrity of the Zonula adherens?
- Q4. Which of the following junctions allows for the direct chemical and electrical communication between adjacent cells through the passage of small ions and molec…
- Q5. A desmosome (macula adherens) is histologically characterized by its attachment to which cytoskeletal element?
- Q6. Which junctional structure anchors the basal surface of an epithelial cell to the underlying basal lamina?
- Q7. The autoimmune disease Pemphigus vulgaris involves the production of antibodies against which junctional component?
- Q8. In a gap junction, six transmembrane proteins assemble to form a half-channel called a:
- Q9. Which of the following proteins is a major component of the tight junction (zonula occludens) and determines its selective permeability to specific ions?
- Q10. Focal adhesions are cell-matrix junctions that primarily link the extracellular matrix to which intracellular structure?
- Q11. Which junctional complex component is responsible for maintaining the 'apical-basolateral polarity' of epithelial cells?
- Q12. The 'fascia adherens' is a type of anchoring junction specifically found in which tissue?
- Q13. What is the primary role of the protein 'vimentin' in the context of cell junctions in non-epithelial cells?
- Q14. Calcium ions are required for the function of which group of junctional proteins?
- Q15. Which of the following is an intracellular adapter protein that links integrins to actin in focal adhesions?
- Q16. Bullous pemphigoid is a blistering disease caused by autoantibodies attacking which structure?
- Q17. Under electron microscopy, which junction displays a characteristic '7-layered' (septilaminar) appearance where adjacent cell membranes are separated by an ext…
- Q18. The 'plaque' seen on the cytoplasmic side of a desmosome is primarily composed of which proteins?
- Q19. Which junctional structure is most likely to be affected by toxins from the bacteria Vibrio cholerae?
- Q20. In the small intestine, the zonula adherens is located immediately basal to which other junction?