The result of this mutation on the target is that particular hormone will have no effect on the target cell. In addition, down regulation is the constant high absorption of a hormone that can cause a reduction in the quantity of its receptors.<span />
<span>The answer is valves. One </span><span>feature that the entrances and exits to the heart need in order to maintain this flow pattern is the valves. E</span><span>ntrances and exits to the heart may need valves in order to maintain this flow pattern. There are valves that control blood flow to the ventricles, and valves that control blood flow out of the ventricles.</span>
Circulatory system, the digestive system and the excretory system.
These three systems are responsible for controlling, regulating and managing the liquid level of the body. These interdependent systems work together in order for the specie to survive and grow like any other organism.
We can say the endosymbiotic theory is the results of the mitochondria of a symbiosis which is between an alpha-proteobacterium and pro-eukaryotic material-DAN(small genome), but the other organelles of eukaryotic cells do not contain genome which is located in the nucleus for other different processes of life.
Mitochondria as a symbiont have similarities with plastid DNA of bacteria sequence in a phylogenetic tree. In addition, this is a prove that mitochondria originate from a group of bacteria which is known as alphaproteobacteria.
