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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.
There are two classes of acids: strong acids and weak acids. Note that strong acids and bases are rarely a concern in biochemistry (as they are in general chemistry). Strong acids ionize (break into ions) completely when dissolved in water.In other words, a strong acid is a good proton donor.For example, the strong acid HCl gives up all its protons to water:ote that strong acids and bases are rarely a concern in biochemistry (as they are in general chemistry). Strong acids ionize (break into ions) completely when dissolved in water. In other words, a strong acid is a good proton donor. For example, the strong acid HCl gives up all its protons to water: