Answer:
sorry if it's a bit messy, hope it helps
The obvious answer is a bc it does not use and toxic fuels
Rods and cones are similar in that they both release glutamate as the primary neurotransmitter. During signalling the rod and cone photoreceptors signal their absorption of photons via a decrease in the release of the neurotransmitter glutamate to bipolar cells at its axon terminal. Every rod and cone photoreceptor release the same neurotransmitter, glutamate.
Answer:
eukaryotic and prokaryotic cells.