Answer: D). A and B
Explanation:
Lipids are the biomolecules that are typically non-polar and hydrophobic in nature, which means they are insoluble in water. The function of lipids is to store energy, and they are the integral part of the cell membrane of plant and animal cell. The examples of lipids includes the waxes, steriods, fat soluble vitamins, phospholipids, diglycerides and fatty acids.
Ribosomes cell and protien
Florida keys
The Florida keys is a coral cay archipelago in southeast United States.The Florida keys is an island which is near the gulf. The Florida keys is an archipelago landform.
Sea caves
<span>A sea cave,also known as a littoral cave,is a type of cave formed primarly by the wave action of the sea.Sea caves are a coastal and an oceanic landform.A sea cave causes by erosion because the rocks break down then terode all the materials to create sea caves.</span>
Answer: Eating excessive quantities of such molecules could deregulate this process, increasing methylation and repressing the expression of genes that should normally be expressed.
Explanation:
DNA methylation is one of the epigenetic mechanisms involved in the regulation of gene expression, because it is a process by which methyl groups are added to DNA.
Methylation then modifies the function of DNA when it is found in the promoter gene, it is essential for normal development and is associated with a number of key processes, including genomic imprinting, inactivation of the X chromosome, repression of repeating elements, aging, and carcinogenesis. Usually, <u>it acts to suppress gene transcription.</u>
For example, folic acid is essential for the rapid cell division that occurs during early fetal development and it also plays an important role in methylation and thus in gene regulation. <u>The metabolism of these vitamins is aimed at achieving adequate levels of DNA methylation, necessary for the cellular processes</u>. Eating excessive quantities of such molecules could deregulate this process, <u>increasing methylation and repressing the expression of genes that should normally be expressed</u>.