Answer:
<em>The correct option is C) The helicase enzyme unwind the DNA molecule into two strands.</em>
Explanation:
DNA replication occurs in a semi-conservative manner. This means that each strand of the DNA can give rise to a new strand. For the process of DNA replication to begin, firstly it is necessary that the DNA unwinds. Topoisomerases are enzymes which are known to remove the super-coiling of the DNA. Helicases can be described as the enzymes which separate the two strands of DNA from the region where replication has to begin. Hence, option C is correct.
The answer that fits the blank is NUCLEARIID. Nucleariids are particularly an amoeba group which is commonly seen in freshwater and soils and these are known to be the closest ancestor of fungi. This group falls in the eukaryota domain. One of the prominent features of nucleariid is their threadlike pseudopodia.
When people don't know how to drive the boat correctly and they loose control.
I believe it is B. Destruction of cells by viral reproduction :)
