Answer:
A. Cyanobacteria.
Explanation:
Both cyanobacteria and plants use water as an electron donor for the light phase of photosynthesis and make ATP and NADPH. The ATP and NADPH are used in the Calvin cycle to fix the atmospheric CO2 into glucose. The use of water as an electron donor releases oxygen gas as a by-product. This photosynthesis wherein the use of water as an electron donor releases oxygen gas as a by-product is also called oxygenic photosynthesis.
Un what's even the question so that I can help you get the answer???
Both transcription and DNA replication are essential and significant genetic mechanisms.
Transcription is a process where the genetic material i.e. DNA is getting converted or transcribed to RNA by an enzyme RNA polymerase.
Whereas the DNA replication is a process where, doubling or copying of DNA from original DNA (identical replica copies). Which is the basis for biological inheritance.
