All the options are incorrect. The correct answer will be THE NUMBER OF HYDROGEN IONS MOVING DOWN THE PROTEIN CHANNEL.
A proton pump is found in the inner membrane of mitochondria which is also known as hydrogen ion pump. The hydrogen ion is pumped across the inner mitochondrial membrane depending on the proton gradient.
Answer
Facilitated diffusion is the diffusion
Explanation
Facilitated diffusion is the diffusion of solutes through transport proteins in the plasma membrane
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During the process of cellular respiration, energy is converted and broken down from a monosaccharide of glucose to form energy containing molecules, that facilitate the production of ATP. The energy in the form of glucose is utilized within the cells of the organism, and the organelle responsible for this process, of manufacturing ATP, a usable energy molecule within the cell would be the mitochondria.
Nerve cells are functionally classified as sensory neurons, motor neurons, or interneurons. Sensory neurons (afferent neurons) are unipolar, bipolar, or multipolar shaped cells that conduct action potentials toward or into the central nervous system.