Physiology A negatively charged molecule is filtered with more difficulty compared to a positive one because A Presence of negatively charged sialoproteins on the filtering membrane B Negatively charged molecules are larger C Positively charged proteins on filtering membrane D Urine is acidic 💡 Explanation A negatively charged molecule is filtered with more difficulty compared to a positive one because ✓ Correct Answer: A. Presence of negatively charged sialoproteins on the filtering membrane