A nucleosome consists of (a) DNA and scaffolding proteins (b) scaffolding proteins and histones (c) DNA and histones (d) DNA, histones, and scaffolding proteins (e...

A nucleosome consists of (a) DNA and scaffolding proteins (b) scaffolding proteins and histones (c) DNA and histones
(d) DNA, histones, and scaffolding proteins (e) histones only

Hi, everyone. My name is Eric. And let's answer problem 11. Now, in this question, we're going to be focusing on eukaryotes and specifically the DNA of eukaryotes. Now there are several factors, including proteins and enzymes that are involved with the DNA of eukaryotes. Specifically, this could be storage or even DNA replication. In this question, we're going to be going over what the DNA is wrapped on, and let's go through each answer choice to explain what is the right answer. So, first off, let's start with a Now A is his stones. His stones are proteins that DNA wrap around to be condensed into chromosomes. So if this is our hiss stone protein, then the DNA will be tightly coiled around the Histon, and this will be able to tightly pack the DNA so it could be condensed into a chromosome structure. So a looks to be the right answer, but let's go over the other answers. To make sure now be is prelim. A race Clurman race is the enzyme that adds nucleotides in DNA replication and even in transcription. So what happens is if we have a DNA and we're having nucleotides, then the prelim a race will go ahead and add nucleotides to match complimentary lei. Right. So polyamorous are the enzymes that can add nucleotides to a DNA sequence. So plumb race is not the correct answer for this question. Now, see, we have single stranded, binding proteins so single stranded by any proteins. Now, these air the proteins that actually will hold together the DNA in certain parts. It will actually keep it straight, because DNA will naturally coil like in this picture here with his stones. So single strand binding proteins binding specific spots. And they hold the DNA in a straight linear fashion. So see is not the correct answer. And finally, d de is a sliding clamp. Now, a sliding clamp is a protein that actually helps hold the DNA with the, uh, the primaries together. Okay, so it makes sure that the prelim a race and the DNA actually stay together, and as the name suggests, it will slide along, moving the prelim a race down the DNA. So sliding clamp is not the answer. Our correct answer is a hiss stones. His stones are the proteins that the DNA is going to be wrapped around so it could be condensed into a chromosome. I hope this helps explain. And thanks for watching

So here are mainly asked to identify the differences between DNA and RNA. So DNA, first of all stands for deoxyribonucleic acid. So with your rival sugar in this case for D. N. A. DNA lacks essentially an auction on its uh 2nd carbon of its pento sugar. Mhm And as a result is known as deoxyribonucleic acid. Well on the other hand, RNA contains this RNA contains a two prime hydroxyl group which contains this oxygen atom. So as a result, the main difference between DNA and RNA is the fact that RNA contains a ribose sugar, while DNA contains a deoxyribonucleic sugar. And also mainly there's a difference in the nitrogenous bases that are present in DNA and RNA DNA contains than that charged the space timing, which is also promoting while on the other hand, RNA contains euros L. And which is also a primitive. So the main difference between RNA and DNA A is that RNA contains ribose and your cell which is answer choice D. And this is our final answer

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

All right. So we're gonna take a look a problem to in chapter 10 of our book. And that just asked us, What is Crime Metin made out of now before? We need to look at the structure of a chromosome and a chromosome is made out of these, um, thes strands and the's are chromatic fibers. Now, that doesn't do us much good, because we're trying to figure out what chromatic is made of. And now we have thes things here. These things that I've represented with circles thes air called hissed owns. And there they are, a strike. Uh, excuse me as type of structural support for the Croats and fiber in orderto bond, all of these Croats and fibers together there is a material that wraps around each one of these hissed, owns and keeps going. Now they are all interlinked together. I'm not a great artist. I do apologize. But this material is made out of this structure which we can identify as a double helix structure. And we know that this structure has to be DNA because RNA is on Lee a single helix structure. It doesn't have two sides that twist around Sister Chromatic kids are used primarily in Might ASUs and my ASUs. So those do not apply here. And chromosomes are large unit. It's what, um, comments and builds. So that means our answer is DNA and protein marking. Question or excuse me response. Be as the correct answer.