Answer: option D - the electron transport system
Explanation:
The electron transport system BASICALLY involves the transfer ofelectrons from NADH to oxygen coupled with the synthesis of ATP.
Note that electron transport system occurs in the INNER Mitochondrial membranes.
The Kingdom Animalia or The Metazoa or The Animal Kingdom, is a major group that animals are classified under.
Phyla or Phylum, is a taxonomic rank or a level of classification below kingdom and above class.
About 36 Phyla have been identified by biologists within the Animal Kingdom, some of which are; amphibians, reptiles, fish, birds, and mammals.
The answer if or question would be question 2
9 I think if I’m wrong I’m sorry but from what I know it’s nine if I’m wrong tell me!!