Your job among enzymes on the DNA replication team is to keep single DNA strands from getting tangled. You're
930454
I can definitely tell you the enzyme is not an initiator. The DNA polymerase has a sequence that initiates replication. \n\nThe protein you are talking about is called SSB (Single Starnd Binding) protein. I am very amazed where you got this question from. I have never before heard such a function related name for SSB protein. But if it is a must, I would go for straightener since SSB unbound single starnded DNA forms folds (loops) as in RNA. But it definitely is not initiator.
335351
Survival of the species, its in our DNA.
848007
You get a continuous and discontinuous strand because DNA polymerase only makes DNA in 1 direction (5` to 3`).  The continuous strand is in that orientation anyway, so you get a nice long replication.  The opposit strand is oriented 3` to 5` relative to the polymerase, so the replication has to be broken down into multiple, short, 5` to 3` segments so that replication can occur within the same polymerase macromolecule.\n\nI had to mention  DNA polymerase, it's really impossible to explain this without saying something about how it works :P I did leave out RNA primers though!  If anyone else is curious, the RNA primers are the site of the initiation of replication of each little Okazaki fragment.
396880
DNA duplicates during inter phase of cell division to prepare the cell for mitosis
283704
baby enzymes can deal with those long chains very well
28052
A strand of DNA contains genes, areas that regulate genes, and areas that either have no function, or a function which we do not (yet) know: also see last bullet point in this section for the difference between DNA and RNA; \nDNA is organized as two complementary strands, head-to-toe, with bonds between them that can be "unzipped" like a zipper, separating the strands; \nDNA is a chain of chemical "building blocks", called "bases", of which there are four types: these can be abbreviated A, T, C, and G. Each base can only "pair up" with one single predetermined other base: A+T, T+A, C+G and G+C are the only possible combinations; that is, an "A" on one strand of double-stranded DNA will "mate" properly only with a "T" on the other, complementary strand; \nU occasionally replaces T, notably in PBS1 phage DNA; you can thus substitute "U" for "T" throughout this section. \nBecause each strand of DNA has a directionality, the sequence order does matter: A+T is not the same as T+A, just as C+G is not the same as G+C; \nFor each given base, there is just one possible complementary base, so naming the bases on the conventionally chosen side of the strand is enough to describe the entire double-strand sequence; \nThe genetic
93891
The important thing is to keep the helical structure clearly visible. Don't worry about the side hydrogens or details of the molecules.\n\nKeep in mind that DNA is a double-stranded helix, and the strands don't revolve around each other identically. Which means there are two sizes of 'grooves': the small grooves are a bit over half the width of the large ones.\n\nIf you use styrofoam balls for the nucleotides and join them with drinking straws (a handy way to do this project), take care that the angle subtended by three of the balls be around 35 degrees.\n\nAbout 10 balls should complete a cycle, which means ball number 11 must be above ball number 1 in a straight line.\n\nDo a strand first, so that it looks fairly twisted yet linear. Add the other strand afterwards. A length of about 20 nucleotides per strand (= 40 in total = 40 small styrofoam balls) should be enough.\n\nGo to a crafts store and buy a bag of balls (they come in 50, 100, etc.) and a bag of 100 drinking straws. Color the balls blue for cytosine, red for thymine, green for guanine and orange for adenine. Pair orange with red and blue with green when building the second strand.\n\nHope this helps.
384762
Restriction Enzymes are used to 'chop' a DNA molecule in a specific pattern in a specifically indentified place on the DNA Molecule. The effect of this is, when the same Restriction Enzyme is used on another DNA molecule (say a Bacterial Plasmid Vector), it will cut in exactly the same place and way.\n\nThis is useful because healthy genes can be incorporated into healthy genes once they have been 'reformed' by an Enzyme called DNA Ligase. An example of this would be placing the cysistic fibrosis gene into a bacterial plasmid, which can then be placed into the lungs via a retrovirus/lipid molecule and the DNA transferred to form the correct Protein required to treat the problem!\n\nI hope that helps,\nTom
1135871
They work through signal transduction.
286365
DNA is a double helix molecule.  The 2 strands are aniparellel (one runs 3' to 5' and the other 5' to 3').  The DNA says in the nucleus of the cell.  The way it replicates is that in uncoils itself and separated from the other strand.  Because of the 4 different nucleotides it is simple to replicate.  The nucleotides are shown as A,C,T, and G.  G goes with C, and T goes with A.  After the stands have separated the nucleotides that are floating about attach themselves to the proper match.  They attach themsleves using an enzyme called DNA polymerase. Now you have 2 complete DNA strands.
736965
This might help a little with the DNA part.
945737
The DNA has to be wrapped up very tightly to fit all of it into the nucleus.  This is a complex process involving chromatin (DNA and associated proteins).  For example, histones are groups of protein molecules that the DNA strand wraps around to help compact its shape.  For a gene to be expressed (transcribed) a section of the the DNA has to become 'unwrapped' and 'exposed' to the transcription machinery.  Methylation and Acetylation of histones play significant roles in this process.\n\nAny good, recent, biochemistry textbook will explain these issues.  If you go to pubmed, they have an online book section.  Click on any of the biochemistry books and enter into the search field "DNA, chromatin", or "DNA, histones", or "gene expression, chromatin" and you will find lots of info. and probably pictures too.\n\nBest wishes and good luck.
925374
transcription in cells makes RNA copies of DNA.
210859
I am only positive on question 4, the okazaki fragments as you probably know are the fragments that are made when replicating DNA away from the replication fork, the DNA strand is replicated by DNA Polymerase, which is one part, and since the DNA is anti-parallel and you must add on to the 3 prime end the DNA strand has to be flipped over the Polymerase, to keep the strand going in an orderly fashion.  The reason it is necessary is because DNA polymerase builds in one direction and since DNA is anti-parallel, one must be made in another way to accommodate for this.
95032
Cell has it own protective mechanism to distinguih self components from others .such methylation etc.. so that protease reconize self component and donot lyse it
239515
DNA melting temperature\n\nUnder normal physiological conditions DNA exists as a double helix with two polymers held together by hydrogen bonds between the bases on each strand. Most biological processes involving DNA (including transcription, replication) require the DNA to separate into single stranded components. We can model this process to determine aspects of its thermodynamics by taking a solution of double stranded (ds) DNA helices and gradually heating them up until each DNA duplex has separated into two single stranded (ss) pieces of DNA that are often described as random coils. The so-called melting temperature of a DNA helix, Tm, is defined to be the temperature at which half the DNA base pairs have broken their hydrogen bonds. As the melting is cooperative (a single molecule unzips once it has started) this is usually equivalent to half the DNA molecules being ds and half ss.
436558
Any molecule (such as an RNA) that can make a copy of itself without being destroyed in the process is self-replicating.