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Another unusual form of DNA is a triple-stranded complex. Triple-stranded DNAA. gencrally occurs in DNA in regions that play no role in transcription.B. involves Ho...

Question

Another unusual form of DNA is a triple-stranded complex. Triple-stranded DNAA. gencrally occurs in DNA in regions that play no role in transcription.B. involves Hoogsteen hydrogen bonding.C. is characterized by the presence of a string of alternating purine-pyrimidine bases.D. forms only intermolecularly.E. assumes a cruciform conformation.

Another unusual form of DNA is a triple-stranded complex. Triple-stranded DNA A. gencrally occurs in DNA in regions that play no role in transcription. B. involves Hoogsteen hydrogen bonding. C. is characterized by the presence of a string of alternating purine-pyrimidine bases. D. forms only intermolecularly. E. assumes a cruciform conformation.



Answers

The double helix model of DNA resembles a twisted ladder in which the rungs of the ladder are
a. a purine paired with a pyrimidine.
b. A paired with G and C paired with T.
c. sugar-phosphate paired with sugar-phosphate.
d. a 5? end paired with a 3? end.
e. Both a and b are correct

Hi. We're now on chapter three, Section two of the S A T biology book by Goldberg. And we're starting that out with Deanna or deoxyribonucleic acid and were asked to figure out which of these statements down here this false regarding the N A. So what I have right here is a simplified structure of the N A. That is gonna help us answer our question for today. The first statement says that DNA is a polymer. DNA is a polymer. Andrew probably learned that D N A is indeed a polymer off nucleotides. So what we have here is just a bunch of nucleotides connected to each other. So I'm right that we have clearly tides as a monomer monitor, which becomes DNA, which is a polymer. So that is true, right? The next question says, or in the next statement says D. N A has the oxy rivals. And for more diagram right here we see that we have a five member dring which stands for the sugar, the oxy rivals. Here we go. So this statement is also true. The end has theocracy rivals. Next one says the nuclear tides of the n A contained Hey sugar, phosphate and nitrogenous base. And for more diagram right here. We already saw that we have a sugar, you have a sugar, and this be right here stands for phosphate and finally our cyclic structures over here or what we call nitrogenous basis. And our structure doesn't really show it. But it's called that way because these these rings actually have nitrogen inthe um and so our last statement says a bonds with J. So it's checkers on. We'll go erase this stuff, make it clear. So we have our structure, which shows are bonding of nitrogenous basis. And here we see that we have a bonding with tea and we also see G bonding would see. And that is true for all of the n A. It's always true that a bonds with tea and G bonds would see. And for that reason this statement right here is false and this happens to be your answer. This statement is false regarding d n a

So a complimentary base pairs for the following sequence will be We have six keys and t only prayers with a. So we have one could create. Thank you three for for six days. Well, we we have nine sees and see only Paris with G So we have 123456789 extra Have you weak T t to a cheat? See C g and me Cookie, we finally we have you could t a teen A t g c g a Can you thinking?

It is important to be able to identify a few key differences between DNA and are in a first and most obviously, while they are both helical structures. DNA is a double stranded molecule, while are in a is a single stranded molecule. Next, you'll notice that are in a is a wry bo nuclear asset, whereas DNA is a d oxy rabona click access. Finally, you'll notice there's a key difference in the nuclear basis. While both molecules contains cytosine, guanine and add a mean or in a will include your A cell, whereas DNA will include Sion mean. Finally, because DNA is a double stranded helix, you'll notice that we have formation of base pairs, whereas since army is a single stranded helix, there will be no base pairing within the molecule.

This question asks in DNA. Nucleotide bonding forms a compound with a characteristic shape known as a. Which of the following beta chain pleaded cheat now for helix or double helix? So beta chains pleaded sheets and Alfa Ulysses are going to be characteristic of protein folding. And specifically, they're tertiary structure, actually secondary structure, because the primary structure is going to consist of the actual amino acids in the poly peptide chain. Secondary structure refers to alfa sheets and beta she's on. Then the pleated sheet could be considered a tertiary structure, but tertiary structure just refers to using these Alfa Change Alfa Kelsey's invaded sheets to form three dimensional four figures or shapes of these proteins. And then the quarter Neri structure is going to refer to protein domains and how these proteins will interact with one another. However, this does not refer to nucleotides, so the correct answer choice would be choice de because the double helix is going to be the way that we envision our DNA molecule right? It's going to be a he lifts intertwined with another helix. Ah, and we'd have our nucleotides that are going to be interacting with one another on the interior portion of this helix, and they interact through hydrogen bonding. So, choice of the correct answer here


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