What is the first step in Respiration called? Glycolosis
Kreb Cycle
Electron Transport Chain
Light Reaction
Dark Reaction
All the above.

The first step in Cellular Respiration is called Glycolosis, it takes place inside the cytoplasm. Within this step, enzymes split apart a molecule of some glucose into two molecules of pyruvate, which releases some energy that is transferred to ATP. (Adenosine triphosphate)

Therefore, your answer is A.

answer is a

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.