In which stage of respiration is ATP required?
In which stage of respiration is ATP required?
Energy is needed at the start of glycolysis to split the glucose molecule into two pyruvate molecules which go on to stage II of cellular respiration. The energy needed to split glucose is provided by two molecules of ATP; this is called the energy investment phase.
What organisms use ATP for respiration?
Oxygen is required for cellular respiration and is used to break down nutrients, like sugar, to generate ATP (energy) and carbon dioxide and water (waste). Organisms from all kingdoms of life, including bacteria, archaea, plants, protists, animals, and fungi, can use cellular respiration.
Where is ATP produced in respiration?
mitochondria
Aerobic vs anaerobic respiration
| Aerobic | |
|---|---|
| Products | ATP, water, CO 2 |
| Location | Cytoplasm (glycolysis) and mitochondria |
| Stages | Glycolysis (anaerobic), Krebs cycle, oxidative phosphorylation |
| ATP produced | Large amount (36 ATP) |
How is ATP produced in aerobic respiration?
Most of the ATP produced by aerobic cellular respiration is made by oxidative phosphorylation. The energy of O2 released is used to create a chemiosmotic potential by pumping protons across a membrane. This potential is then used to drive ATP synthase and produce ATP from ADP and a phosphate group.
Why do organisms need cellular respiration?
The purpose of cellular respiration is simple: it provides cells with the energy they need to function. Key point: Cellular respiration involves catabolic reaction in order to break down food into usable energy so that cells, and the living organisms that contain them, can survive and thrive.
How much ATP is produced in each stage of cellular respiration?
Glycolysis produces 2 ATP molecules, and the Krebs cycle produces 2 more. Electron transport from the molecules of NADH and FADH2 made from glycolysis, the transformation of pyruvate, and the Krebs cycle creates as many as 32 more ATP molecules.