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.
1 Nerve damage. 2  Dry mouth can be a result of nerve damage to the head and neck area from an injury or surgery. 3  Dehydration. 4  Conditions that lead to dehydration, such as fever, excessive sweating, vomiting, diarrhea, blood loss, and burns can cause dry mouth.5  Surgical removal of the salivary glands. 6  Lifestyle. Dry mouth can be a result of nerve damage to the head and neck area from an injury or surgery. 2  Dehydration. 3  Conditions that lead to dehydration, such as fever, excessive sweating, vomiting, diarrhea, blood loss, and burns can cause dry mouth. 4  Surgical removal of the salivary glands. 5  Lifestyle.