This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cell Membrane and transpo protiens, Subject name: Physiology
Epithelial cells get clues about the nature of their neighbors from: 
Select and explain. 
A. Macula adherens, B. Zonula adherens, C. Connexons, D. Zonula occludens
B: Zonula adherens
Answer: B: Zonula adherens 
Explanation: Zonula adherens or adhering junctions provide such clues to epithelial cells, leading eventually to formation of a coherent epithelium. Zonula adherens and desmosome helps to hold cells together, and the hemidesmosome and focal adhesions attach cells to their basal laminas. The gap junction makes - cytoplasmic "tunnel" for diffusion of small molecules (< 1000 Da) between two neighboring cells.