Most biochemical reactions need a biological catalyst called an enzyme to speed up the reaction. Enzymes reduce the amount of activation energy needed for the reaction to begin. Most enzymes are proteins that affect just one specific substance, which is called the enzyme's substrate.
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The Greensboro Four were four young black men who consisted of Ezell Blair Jr., David Richmond, Franklin McCain, and Joseph McNeil
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we're surrounded by 2 oceans, we get exports from other countries and we've one multiple wars. ex. spanish-american war and the civil war