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Enzymes and the active site (article) | Khan Academy The catalysts for biochemical reactions that happen in living organisms are called enzymes Enzymes are usually proteins, though some ribonucleic acid (RNA) molecules act as enzymes too
Enzymes review (article) | Khan Academy A "catalyst" is something that will speed up a reaction, or cause it to happen faster In biological systems (living things), enzymes will help to speed up reactions that would happen very slowly or not at all otherwise, so that's how enzymes act as a "biological catalyst "
Introduction to enzymes and catalysis (video) | Khan Academy Explore the vital role of enzymes in speeding up biochemical reactions in the body, as you learn about the different catalytic strategies enzymes use, including acid base catalysis, covalent catalysis, electrostatic catalysis, and proximity and orientation effects
Types of catalysts (article) | 1st quarter | Khan Academy Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism Enzymes are proteins that act as catalysts in biochemical reactions Common types of catalysts include enzymes, acid-base catalysts, and heterogeneous (or surface) catalysts
Catalysts (video) | Khan Academy In all cases, the catalyst speeds up a reaction by lowering the activation energy An enzyme is a substance produced by a living organism that acts a catalyst in biochemical reactions
Introduction to proteins and amino acids - Khan Academy Enzymes act as catalysts in biochemical reactions, meaning that they speed the reactions up Each enzyme recognizes one or more substrates, the molecules that serve as starting material for the reaction it catalyzes