Proteins that speed up chemical reactions by lowering activation energy in organisms Choose matching term square Lipids Enzymes Carbohydrates

The correct answer is Enzymes.<br /><br />Enzymes are proteins that act as catalysts in organisms, speeding up chemical reactions by lowering the activation energy required for the reaction to occur. They play a crucial role in various biological processes, such as digestion, metabolism, and cellular respiration.<br /><br />Lipids are a class of organic compounds that include fats, oils, are important for storing energy, forming cell membranes, and serving as signaling molecules.<br /><br />Carbohydrates are organic compounds made up of carbon, hydrogen, and oxygen atoms. They serve as a primary source of energy for organisms and are found in foods such as fruits, grains, and vegetables.<br /><br />Therefore, the term that matches the description of proteins that speed up chemical reactions by lowering activation energy in organisms is Enzymes.