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Homocysteine is an amino acid. Amino acids are the building blocks of proteins. When proteins break down, elevated levels of amino acids like homocysteine may be found in the bloodstream. Having elevated levels of homocysteine in the blood (hyperhomocysteinemia) is associated with atherosclerosis and blood clots. It is not possible to get homocysteine from the diet. It must be made from methionine, another amino acid that is found in meat, fish, and dairy products.
1. If blood is too acidic, hydrogen and ammonia are excreted at the distal tubule and sodium and bicarbonate ions are reabsorbed at the proximal tubule because sodium carbonate neutralizes acid. If blood is too basic, less hydron and ammonia excreted and less sodium and bicarbonate reabsorbed. 2.. If blood is too acidic, hydrogen and ammonia are excreted at the distal tubule and sodium and bicarbonate ions are reabsorbed at the proximal tubule because sodium carbonate neutralizes acid. If blood is too basic, less hydron and ammonia excreted and less sodium and bicarbonate reabsorbed. 2.