Question

1).    what is scientific explanation for why all organisms on earth have DNA, RNA, and use ATP?

2).    what are homologous structures? give a real world example of homologous structures.

Answer 1

ANSWER

(1) DNA is found in every nucleus of anorganism that is exactly same in all the cells and is true to all the life forms on earth and the synthesis of the RNA firmDNA is called as translation and formed into proteins and is made of amino acids and these proteins re essential for the development of the living organisms.

The most common example is adenosine triphosphate (ATP). For the very different function of energy storage, a molecule identical to one of the building blocks of the nucleic acids (both DNA and RNA) is employed.

All cells, for example, require the phosphorylated nucleotide ATP (adenosine triphosphate) as a building block for the synthesis of DNA and RNA; and all cells also make and consume this molecule as a carrier of free energy and phosphate groups to drive many other chemical reactions.

(2)The definition of a homologous structure is an organ or body part that appears in different animals and is similar in structure and location, but doesn't necessarily share the same purpose. An example of a homologous structure is the human arm as compared to the wing on a bird.