Question: Which of the following explains how mucus secreted by epithelial cells on the mucosal surface aids in pathogen destruction? Feedback: Mucus is comprised of mucins, an important family of glycoproteins that are secreted by epithelial cells. One of the sugar molecules added to mucins via glycosylation is sialic acid, which is negatively charged. This charge attracts positively charged defensins secreted by epithelial cells to remain at the mucosal surface and increases their potential exposure to pathogens. Responses It prevents nutrients from reaching the pathogens. It prevents nutrients from reaching the pathogens. - no response given It behaves as an antimicrobial peptide. It behaves as an antimicrobial peptide. - incorrect It aids in pathogen transport across the mucosal membranes. It aids in pathogen transport across the mucosal membranes. - no response given It attracts positively charged defensins. Need Assignment Help?