What structure appears to be underdeveloped or missing in the microtubules of the sperm flagellum affected by Kartagener syndrome? The plasma membrane The dynein "arms" Pairs of microtubules What is the normal function of this missing structure? A motor protein that "crawls" along microtubules to contract and release them, which provides movement A cytoskeleton element composed of tubulin subunits to provide structure for movement of the cell A lipid bilayer controlling the movement of substances into and out of the cell Based on the information discussed here, how do you expect Kartagener syndrome leads to infertility? The lack of dynein means that the sperm cannot bend their tails to swim and fertilize the egg The lack of microtubules mean the sperm do not have tails and cannot swim to fertilize the egg The lack of a plasma membrane means that pathogens and foreign substances can permeate the sperm and damage the DNA
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