It would be C because it would be the primary source for the researchers
Answer:
The answer is option is A.
a photopsin is a protein of a photo pigment within cone photoreceptors.
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BRAINLIEST PLEASE...
1. It connects a large part of the peripheral nervous system to the brain. 2. Nerve impulses reach the spinal cord through sensory neurons are transmitted up into the brain.
The correct answer is option D,
in the alcoholic fermentation, which is a type of anaerobic respiration pyruvic acid is converted to ethanol and CO2 thereby creating NAD+ from NADH after glycolysis.