vine a discutir unos asuntos I came to discuss several matters o issues; no sÃ© nada de ese asunto I don't know anything about it o the matter; el asunto de los impuestos divide al gobierno the government is divided on the matter o question o issue of taxes; hemos tratado el asunto de nuestro divorcio we've talked about the subject of our divorce; ...
The Role of Enzymes in Living Organisms. Enzymes are macromolecules that catalyze chemical reactions within a living organism. Most are proteins, but there are also RNA enzymes which aid in protein synthesis.
A lysosome contains hydrolase enzymes capable of breaking down wastes and old cells. They are found in animal cells. Lysosomes sometimes get the nickname suicide sac as their enzymes digest worn out cells and organelles and can also digest food that is in a food vacuole. The enzymes in a lysosome are acidic. Lysosomes were discovered by Christian de Duve in the 1960's--a cell biologist.