What types of bonds maintain the structure of the DNA?

Answer 1

Hydrogen bonds.
It's the most biologically significant bond in the human body. It holds the 2 strands of DNA together in a double-helix pattern.

Hope that helps! You could go into the other bonds (ionic and covalent), but I don't think that will help you very much with DNA.

Answer 2

phosphodiester bonds (which is a type of covalent bond) hold the ribose sugars vertically together (forming the "sides" of the dna's ladder structure)
hydrogen bonds create the horizontal "rungs"...attaches the 2 sides of the ladder

Answer 3

DNA is not a single molecule, but rather a pair of molecules joined by hydrogen bonds:

Answer 4

that is rather clean that each and all the organisms residing at present, even the simplest ones, are removed from some preliminary existence sort with the help of four billion years or so, so one has to think of that the 1st varieties of existence would have been lots, lots extra straightforward than something that we see around us. yet they'd desire to have had that regularly occurring components of being waiting to strengthen and reproduce and be project to Darwinian evolution. So it would desire to be that the earliest issues that fairly extra healthful that definition have been little strands of nucleic acids. no longer DNA yet—that is a extra state-of-the-paintings molecule—yet something that would desire to catalyze some chemical reactions, something that had the blueprint for its very own duplicate. would that is something we'd know decrease than a microscope as residing, or would that is completely distinctive? good query. i'm able to think of that there became right into a time previously there became into existence in the international, and then needless to say there became right into a time X-hundred thousand years or a million years later while there have been issues that we would all know as organic and organic. yet there is not any query that we would desire to have long undergone some intermediate point the place, had you been there staring at them, you may have located your bets the two way. So i'm able to think of that on a primordial Earth you will have replicating molecules—no longer extremely real looking in our definition, yet they are somewhat getting the equipment going. Then a number of them start up interacting jointly and rather quickly you have something slightly extra real looking, and then it includes possibly yet another piece of nucleic acid from someplace else, and with the help of the accumulation of those disparate strands of suggestions and interest, something which you and that i'd seem at and agree "that is organic and organic" would have emerged. the quick answer is we do no longer likely understand how existence originated in the international. there have been a sort of experiments that let us know some obtainable roads, yet we proceed to be in important lack of expertise. That reported, i think of what we are seeking for is a few style of molecule that is trouble-free sufficient that that's made with the help of tangible tactics on the extra youthful Earth, yet complicated sufficient that it may take cost of coming up extra of itself. That, i think of, is the 2nd while we flow that large divide and start up up shifting in the direction of something that maximum persons would know as residing.