Answer: B.
Explanation: Feedback regulation of endocrine system explains the hormone pathway in which neurons in the hypothalamus secreting thyroid releasing hormone, posterior pituitary and endocrine glands
In physical science there are two types of "isolated systems"
1. Being a Physical System in which it is so far removed from other systems that it does not react with any of them.
2. Being a Thermodynamic System in which it is enclosed by rigid immovable walls of which neither mass nor energy can flow through.
I believe in this case although not stated that it would refer to a Thermodynamic System which would leave you with the only plausible answer as ENERGY AND MATTER CANNOT ENTER OR LEAVE.
None of the other answers make sense. Even if it were referring to Physical. Physical does not react with anything at all. An as you can see Thermodynamic does not allow for anything to pass through or leave.
Its staying close to a certain temp, therefore it may continue at that temp for a bit longer
<span>Mitochrondria of the eukaryotic cells.
As many researchers
hypothesize that the old single-celled organism or the origin of the
complex-celled organisms came from the endosymbiosis of the
mitochrondrion organism and the prokaryotic cell. It has been said that
mitochondria was an independent organism which then to have been evovled
itself after planting itself inside a prokaryotic cell which aided
cellular respiration and production of ATP (Adenosine Triphosphate).
This then aided the prokaryotic cell to be more sophisticated and caused
another change from having without a true nucleus to a eukaryotic cell
with a nucleus and embedded DNA. </span>