Constitutional isomer (skeletal isomer; structural isomer): One molecule in a set of isomers that differ in the order the atoms are connected. The term ' structural isomer ' is vague (all isomers differ in their structure) and should be avoided. Three Constitutional Isomers of C 5 H 8.
Text Preview. Homeostasis is the maintenance of a constant environment in response to internal and external stimuli. The body requires the constant and healthy environment that only homeostasis can provide Without this environment the body wouldnât be able to carry out the life support process.omeostasis is the maintenance of a constant environment in response to internal and external stimuli.
Some of the internal conditions that  homeostasis control is: carbon dioxide, bod â¦ y temperature and the  body's water content.omeostasis controls everything in our body. It is important in keeping all of our systems in balance. Our systems have a certain normal range and the reason is due to homeostasis.