Oxygen.
Oxygen was fatal when organisms started using photosynthesis, this event was known as the Great Oxidation Event.
Bacteria produce restriction endonucleases, or restriction enzymes, that recognize and cut up foreign DNA, including certain phage DNA.
Answer:
Oxidative Phosphorylation in glycolysis.
Explanation:
Kinases are the enzymes which cause transfer of the phosphate group from one molecule to another molecule . As the PEP is converted to pyruvate in glycolysis by a pyruvate kinase enzyme it causes phosphorylation. It is one of the important regulatory steps of glycolysis.
This is a monarchy butterfly