Answer:
Moss
Explanation:
Bio means alive, and tic means with, so biotic means with life. Moss is the correct answer because it shows sings of life, such as reproducing, and showing responses to change. Water, rocks, and sunlight are not alive because they show none of the signs of life.
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>.
Answer:
Y and Z
Explanation:
Since both Y and Z has one valence electron each, they both belong to the same group (group 1) called Alkali metal group. Elements in this group have one valence electron in their outermost shell (e.g, Lithium has 3 proton and it configuration is 2, 1 and the 1 there clearly indicates its group) other examples are sodium, potassium, rubidium and francium. They all have the same properties due to one valence electron they have in common.
