This process starts in the cellsâ cytoplasm and is completed in the mitochondria-the cellular powerhouse. In those tiny organelles, one molecule of glucose with 6 molecules of oxygen are changed into 36 molecules of ATP â the energy cells can use to get things done.
Symptoms of Severe anxiety. The list of signs and symptoms mentioned in various sources for Severe anxiety includes the 4 symptoms listed below: 1  Feeling of extreme uneasiness or apprehension. 2  Increased heart rate. 3  Sweating. 4  Unable to think clearly. 5  more information...Â».
But sometimes stress can build up and lead to anxiety. The main symptoms of anxiety are fear and worry. In turn, anxiety can cause or go hand-in-hand with other problems including: 1  Restlessness. 2  Sleeplessness. 3  Depression. 4  D ifficulty concentrating. 5  Difficulty completing tasks. 6  Difficulty getting along with others.