DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
You are watching a horror movie. The music changes to the familiar tune you recognize as a prelude to. danger. You tense up, your heart rate increases, your breathing becomes shallow, your mouth is dry.
Breathing through your mouth can cause pain or burning in your lungs after running because your brain thinks carbon dioxide is being lost in excess, so your body produces goblet cells to produce mucus, which slows your breathing and constricts your blood vessels.