DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules.
The heart pumps oxygenated blood to the body and deoxygenated blood to the lungs. In the human heart there is one atrium and one ventricle for each circulation, and with both a systemic and a pulmonary circulation there are four chambers in total: left atrium, left ventricle, right atrium and right ventricle.
The pulmonary circulation is the circulation of blood between the heart and lungs. The pulmonary artery is deoxygenated and travels to the lungs to receive oxygen, where it re â¦ turns back via pulmonary oxygen, now oxygenated. The systemic circulation is the circulation of blood form heart throughout the body.ulmonary circulation is the function of the right side of the heart, circulates blood to the lungs and brings it back to heart, the purpose is to allow gas exchange between â¦ air and the circulating blood, it is called external respiration.