Internal respiration is completed in two steps , which occurs in
Answers
Answer:
organism obtains energy
Explanation:
Key Points
Cellular respiration is the metabolic process by which an organism obtains energy by reacting oxygen with glucose to give water, carbon dioxide, and adenosine triphosphate (energy).
The 3 steps of cellular respiration are glycolysis, the Krebs cycle, and oxidative phosphorylation.
Carbon dioxide is a waste product of cellular respiration that comes from the carbon in glucose and the oxygen used in cellular respiration.
Internal respiration involves gas exchange between the bloodstream and tissues, and cellular respiration.
Gas exchange in tissues is a result of tissue surface area, gas partial pressure gradients, and the blood perfusion of those tissues.
Key Terms
Cellular respiration: The cellular process of producing adenosine triphosphate (ATP), water, and carbon dioxide from glucose and oxygen.
Oxidative Phosphorylation: The final step of cellular phosphorylation in which oxygen is used to a create an electron transport chain that produces a large amount of ATP from nicotinamide adenine dinucleotide (NADH).
Internal respiration refers to two distinct processes. The first is the exchange of gasses between the bloodstream and the tissues. The second is the process of cellular respiration, from which cells utilize oxygen to perform basic metabolic functions.