Answer:
miRNAs are involved in A. transcriptional silencing
Explanation:
MiRNAs are single-stranded RNAs that are involved in gene regulation. This type of RNA allows the silencing of genes through complementarity with a transcribed RNA, thus promoting their degradation and reducing their translation levels.
It cannot be a bacteria because bacteria is made up of one cells, as it is a unicellular organism. Secondly, chlorophyll is the chemical that is in plants that makes the leaves on said plant green. So that makes the correct answer plants and proves why C.Bacteria is wrong.
The cell cycle is the replication and reproduction of cells, whether in eukaryotes or prokaryotes.
It is important to organisms in different ways, but overall it allows them to survive.
For prokaryotes, the cell cycle, called Binary Fission, allows for them to live on by dividing into two new daughter cells.
For eukaryotes, consider an animal such as a cat, if a cat were to have a severe injury, it would need the cell cycle to replicate cells to replace those that were damaged in the injury and hence needs the cell cycle to heal itself.
Zygotes also depend on the cell cycle to form its many cells in order to produce a baby organism at the end of its process.
Plants require the cell cycle to grow and provide life for every other organism on earth. and therefore the cell cycle is highly important to organisms as if it were not present or if it were to stop suddenly, life would completely end.
In short, the cell cycle allows organisms to survive.
I really hoped this helped you understand cell cycles! Have a good day :)
