During a biochemical reaction, pyruvate (C3H403) is converted into carbon dioxide (CO2) and water (H2O). In what cellular organelle does this biochemical reaction occur?

Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems