DNA replication requires . a. template DNA b. free nucleotides c. DNA polymerase d. all of the a

DNA replication requires . a. template DNA b. free...

Key Concepts

DNA Polymerase

DNA polymerase is the key enzyme responsible for adding nucleotides to the growing DNA strand during replication. It also has proofreading abilities to correct any mistakes, which is crucial for maintaining the integrity of the genetic information.

Free Nucleotides

Free nucleotides are the individual nucleotide building blocks available in the cell that are used to construct the new DNA strand. Their availability and proper assembly according to the template are essential for accurate DNA replication.

Template DNA

Template DNA is the original strand of DNA that serves as a model for synthesizing a new complementary strand. The base pairing rules ensure that each new strand is an accurate copy of the template, preserving genetic information.

DNA Replication

DNA replication is the process by which a cell duplicates its DNA, ensuring that each daughter cell receives an exact copy of the genetic material. It involves multiple steps and components that work together to accurately copy the DNA molecule.

Transcript

00:01 Okay, so this on the left -hand side of the screen is a picture of dna, and i'm hopeful that it's not going to be too small for you to be able to see.

00:12 I had to pare it down and bring it to make the screen a little bit smaller in order for all of the dna to be represented here.

00:22 One of the things that you'll notice is that there is a number of various atoms.

00:29 There are a number of various atoms that are present here.

00:32 There's hydrogen, oxygen, nitrogen, carbon, and phosphorus.

00:36 The nitrogen is there in the adenine and the guanine, the i -n -e at the end of each of these, cytosine, i -n -e.

00:52 All of that indicates that there is going to be nitrogen present.

00:56 There is sugars.

00:58 You can see the six -ringed sugar.

01:01 Here and there's another six drink sugar where there's another one here it is and then the phosphate is where the phosphorus and then there's oxygens around here so what we're looking at oh you know what i think i did i circle this is the this is the base my mistake base i just looked at oh that's six of them but really, when we're looking at the two oxygens here, there's an oxygen and there's an oxygen here.

02:00 So really, this is the, it's going to be a five -carbon sugar, and its name is deoxyribose.

02:12 It's a five -carbon sugar.

02:13 So the thing that's going to look more like a, here we go, more like a house shape.

02:23 And it's attached to the phosphate is going to be that five carbon sugar.

02:28 And one of the things that we see is if i were to draw this over here to the side, is that i would kind of not make it the swirly spiral staircase thing because that can be confusing, i think, to anybody.

02:42 Instead, i would just actually just straighten that up and make it to where there's rungs going across.

02:50 And each of these rungs going across, if you'll see, that's one whole wrong that's going across...

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