Im not 100% sure but the best answer I can give is Prokaryotes because they came to be around the time oxygen did as well.
The cellular process shown in the image as x, y and z are mentioned below:
X is Replication. It is the process by which double- DNA Replication is the process by which double stranded DNA makes its own copies. Each strand on its separation, synthesizes a complementary stand.
Y is Transcription. It is the process by which copying of the information from a strand of DNA into a new molecule of mRNA, with the help of an enzyme RNA polymerase.
Z is Translation. It is the process in which genetic code on mRNA is decoded to produce the specific sequence of amino acids to form a polypeptide chain.
The first is A second is C
I looked it up and got energy not sure though
C because i have many mental issues and a family that doesnt support me and my wage is 2$ so
