B. DNA replication is the most similar to PCR
T<span>ogether our bones, muscles and joints form our musculoskeletal system and enable us to do everyday physical activities.</span>
The heart pumps blood through the pulmonary and systemic circuits of the circulatory system.
In humans, the blood flows from the heart in two circuits or paths. The pulmonary circuit allows blood to flow between the heart and the lungs, while the systemic circuit allows blood to flow between the heart and the rest of the body.
The right side of the heart pumps deoxygenated blood to the lungs through the pulmonary circuit to oxygenate the blood. The oxygenated blood returns to the heart and is pumped by left side of the heart through the systemic circuit to oxygenate the rest of the body. Then, blood becomes deoxygenated as is passes through the body. The deoxygenated blood from the body flows back into the heart via the systemic circuit. The deoxygenated blood onces again moves through the pumonary circuit for oxygenation and the cycle begins again.
Active transport moves molecules and ions from lower concentration to higher concentration with the help of energy in the form of ATP & passive transport moves molecules and ions from a higher concentration to lower concentration without any energy.
