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».
Some of the signs and symptoms of anxiety: 1  Chest tightness or pain. 2  Upper body pain (or pain anywhere in the body). 3  Stomach upset and pain. 4  Shortness of breath. 5  Palpitations. 6  Anxiety. 7  Lightheadedness or dizziness. 8  Sweating. 9  Nausea and vomiting. 10  Feel like passing out. 11  Unusual fatigue or exhaustion.