How does the cell get the sugar and oxygen needed for cellular respiration?

The electron transport chain (ETC) consists of a series of molecules, mostly proteins, embedded in the inner mitochondrial membrane. The glucose required for cellular respiration is produced by plants. ... This energy is then converted along with water and carbon dioxide from the atmosphere into glucose and oxygen.

Explanation:

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.