Final answer:
The development of a microvillus on an intestinal epithelial cell is more likely with the plus-end growth of microfilaments at the tip and no shrinkage at the minus end, as this allows extension of the microfilaments and the structure of the microvillus. The correct option is A. plus (+) end growth of microfilaments at the tip of the microvillus and shrinkage at the minus (−) end
Step-by-step explanation:
Among the options provided for microvillus development on an intestinal epithelial cell, the more likely scenario would be the plus (+) end of the growth of microfilaments at the tip of the microvillus but no shrinkage at the minus (−) end. This is because microvilli are supported by a core of actin microfilaments arranged with a plus-end near the apex of the villus and a minus-end anchored in the cytoplasm.
In order for a microvillus to develop and be maintained, polymerization of actin at the plus-end would extend the microfilaments and the microvillus structure, which is essential for their role in increasing the absorptive surface area of intestinal cells for efficient nutrient uptake.The correct option is A. plus (+) end growth of microfilaments at the tip of the microvillus and shrinkage at the minus (−) end