How do enzymes impact chemical reactions?

Enzymes are protein molecules which serve as catalysts for chemical reactions. A catalyst is a substance which will decrease the activation energy for a reaction. Enzymes will make reactions occur much more easily , quickly and more efficiently than they ever would without the enzyme .

Ihate school can u relate

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey