Since 1910, the urban population has grown by nearly 500 percent while the rural population has grown by 19 percent. ... The Census Bureau estimates that during the same 30-year period, the population of the 49 states grew by more than 82 million people, or 36 percent
Answer:
Correct Answer is Viruses
Explanation:
Viruses are non-cellular entities that consist of a nucleic acid nucleus (DNA or RNA) surrounded by a protein layer. Although viruses are classified as bacteria, they are not considered living organisms. The microbes such as viruses cannot reproduce outside a host cell and cannot metabolize on their own. Viruses often infest prokaryotic and eukaryotic cells that cause disease.
Answer:
The Cerebellum
Explanation:
The Cerebellum, or "little brain" controls all aspects of balance, speech, movement, coordination, and motor skills.
<h2>Epigenetic modification </h2>
Explanation:
A methyl group bound to DNA inhibits transcription of a gene describes an epigenetic modification
Epigenetic modifications include: histone modifications and methylation
Methylation is the main cause of gene silencing for example methylation at lysine residue of histone protein, H4 leads to gene repression
Small silencing RNA molecules are of two types: micro RNA (miRNA) and small interfering RNA (siRNA)
miRNA directs degradation of target mRNA when makes perfect complementary while suppress mRNA translation when makes partial or imperfect complementary
siRNA primarily mediates degradation of target RNA
