Why are the enzymes used in cellular respiration virtually identical in all species?
2 Answers
The cellular respiration in all the organisms is alike.
Explanation:
The aerobic respiration or cellular respiration needs oxygen to oxidize the food. Most of the chemical reactions are completed in inside the cytoplasm mitochondria.
The energy is released by respiration which is used to make large molecules and vital activities.
This is having evolutionary significance.
Explanation:
In cells respiratory enzymes are at two locations.
Anaerobic respiration takes place in cytoplasm by glycolysis.
Aerobic respiration takes place in mitochondria.
Glycolytic enzymes are formed in atmosphere with no oxygen. The starting molecule glucose was already synthesized in photosynthesis.
The end product of glycolysis is pyruvic acid.
During aerobic respiration in mitochondria pyruvic acid is degraded to carbon dioxide and water molecule.
Respiratory enzymes whatever formed are efficient. Therefore the DNA sequence for respiratory enzymes is repeated in major organisms both prokaryotic and eukaryotic
