Answer:
1. Nucleoid
2. Plasmid
Explanation:
Prokaryotes are groups of organisms characterized by the lack of a membrane-bound nucleus in their cell. Due to this, the genetic material (DNA) of prokaryotes are found naked i.e. not housed. The DNA of a prokaryote is arranged in a single coiled chromosome located in a region of the cell called NUCLEOID.
However, some prokaryotes e.g. bacteria carry genes on extrachromosomal pieces of circular DNA called PLASMID. Plasmids carry certain genes like antibiotic resistance genes.
There is more to DNA than cytochrome c. This is just one protein.
The animals who live in those habitats have adjusted to the local temperature so changing the climate drastically, may upset the living organisms there:)
The answer is the T tubules.
The aortic valve prevents backward flow of blood into the left ventricle.
