Which of the following describes the synthesis of nucleic...

Which of the following describes the synthesis of nucleic acids? a. Nucleotides are added to the 5 ' end of a single nucleic acid strand. b. Nucleic acids are polymerized by the formation of peptide bonds between nucleotides. c. Strands in a double helix are synthesized in a parallel direction such that one end of the molecule has two $3^{\prime}$ ends and other has two $5^{\prime}$ ends. d. Complementary pairing between bases is required for copying nucleic acids.

Transcript

00:01 Okay, in our response to the question, let's talk about dna replication.

00:03 Remember that dna is made of nucleotides.

00:09 In nucleotides are like this, let's graphics.

00:12 This is a nitrogenose base.

00:13 This is the first ingredient.

00:14 Let's suppose it is adenine, but it can be adenine, i mean, cytosine or one.

00:18 This is the first ingredient.

00:20 Then we're going to have a pentose sugar.

00:27 This is going to be the second ingredient.

00:29 In dna, it is deoxy glibose, the pentose sugar.

00:32 But in rna, it is nosed glybose, it is not.

00:34 Guibos, okay? this is going to be the penthouse sugar.

00:40 And the third ingredient is going to be a phosphate group.

00:45 It is here, a phosphate group.

00:49 Okay, so this is going to be the general structure of an nucleotide.

00:53 Remember that this is carbon number one, carbon number two, carbon number three, four, and five of the pentose sugar.

01:01 Okay.

01:01 And the carbon number three, we're going to have this group, hydrocy group and in, well, in case of the oxyribles, we're going to have only here, this hydrogen atom here.

01:12 Okay, and at the 5 carbon, we're going to have attached the posfri group.

01:18 So when they talk about the 3 -end and the 5 -end, they are talking about this.

01:24 For example, let's suppose that here we have many other nucleotides, but this is the last nucleotide.

01:29 This is the last nocrotite here.

01:30 So it is ending practically at this o -h group, that is a, labeled to the 3 -end, to the carbon number 3 of the petal sugar, so this is going to be the 3 -end.

01:41 Okay, what happens? like, on the other extreme, or on the other side, well, we're also going to have, let's suppose, here also the same nucleotide, but this time it is ending with the phosphate group, right? that is attached to the carbon number 5, so this is going to be the 5n.

02:09 So, practically they came from the number of the carbon that is in the penthouse sugar.

02:15 We have the amount that the dna is a double external molecule, and if this is the 3 -end, it's going to be the 5 -end.

02:21 It also is ant -parallel because it is going to be the 5 -end here and the 3 -end here.

02:25 Okay? so it is like this.

02:27 If we want to replicate, let's suppose we want to replicate which extract, but goes from 3 to 5...

Question

Please give Ace some feedback