First step of cellular respiration in which a molecule of glucose is broken into two molecules o pyruvic acidTakes place in the cytoplasm. Yields 2 ATP.

Glycolysis

Explanation:

Glycolysis is the first step in cellular respiration, both aerobic and anaerobic.

Glycolysis occurs in the cytoplasm, whereas other steps of aerobic respiration occur in the mitochondria.

During glycolysis, a six carbon glucose molecule is broken down into two three carbon molecules of pyruvic acid. This process yields two molecules of ATP. Two hydrogen ions and two molecules of water are also released during the process.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

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not sure if this is what you'r looking for nnew= nold