STRUCTURE OF DNA

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Structure of DNA: The DNA molecule is a polymer consisting of several thousand pairs of nucleotide monomers.Each nucleotide consists of three components. They are
1. Pentose sugar deoxyribose
2. Phosphate group
3. Nitrogenous base
Nucleoside = deoxyribose + nitrogenous base
Nucleotide = deoxyribose + nitrogenous base + phosphate
Pentose sugar:deoxyribose sugar is a pentose sugar with five carbon atoms.
Phosphate: the phosphate is attached to the adjacent pentose sugar alternately at their 5th and 3rd carbon atoms by phospho -- diester bonds. The phosphate and pentose sugar constitute the back bone of nucleic acids.
Nitrogen bases: there are two types of nitrogen bases
1.Purines adenine and guanine and
2.Pyramidines cytosine and thymine
Nitrogenous base is linked to the pentose sugar through N- glycosidic linkage to form a nucleoside. When a phosphate is linked to 51 OH of a nucleoside through phosphoester linkage a corresponding nucleotide is formed. Two nucleotides are linked through 31 -- 51 phosphodiester linkage to form dinucleotide. More nucleotides are joined to form a polynucleotide chain. A polymer has at one end a free phosphate moiety at 51 end of ribose sugar, at the other end the ribose sugar has 31 OH group. The back bone in a polynucleotide chain formed due to sugar and phosphates. The nitrogenous bases linked to sugar moiety form the back bone.

[@madhuyadav7116]

Your video is the most helpful for me.thanx a lot:-)

[@thatiturisatya7646]

vedio with text explanation is excellent.. thank you so much

[@shariquemisbah3913]

Can’t get better than this 🔥🔥

[@fierywolverine9255]

Exactly what is in the text.
Nice explanation if u just keep it along with u when are reading and fallow the lines

[@lemonade4865]

This was so short and simple but so helpful very nice bro

[@rajuvenkat2234]

Not explained the 5' 3'

[@arijitjana3686]

Exactly

[@mehakchahal824]

Its really great thank u very much👌😊😊

[@mersalthiru1284]

It is excellent explanation of dna structure and tqqqqq very much ur clear ideas

[@arohiayu212]

Well explained 👏 thank you so much ))😊

[@rahulkawale9272]

Great information
Thanks for amazing vedio

[@clowie299]

this is a very good vid thumbs up.....

[@atiqkhanak5057]

Amazing now I understood..... Thanks

[@AbhishekPatel-xz2ck]

This is the best explanation,😘😘😘😘

[@geoseries]

Well presenter

[@erashinianand3810]

Thank u so much

[@guadalupeflorian7913]

Amazing video! Thank you so much, finally understood

[@jagjitchaudhary]

Thanks a lot ......totally ncert every single word

[@sabyasachibanerjee4816]

Great! !

[@pranavisunki3940]

thanks!!!

[@Prakash_chongtham]

Thank you very much..........

[@narasimhrao2358]

Best ever video

[@aswin584]

Tysm sir well explained ❤❤

[@mishehe]

Ohh damn how easy it was😲.....nd i thought its a very complex topic, but here i came to know that its easy as well as interesting......
THANK YOU SO MUCH!!❤

[@titash3973]

How does it explain the 5' and 3' ester bonds?

[@hinanoor5156]

Thnxxx

[@godslove7301]

thank yiu so much for this vlear explanation. I've studies this for 2 classes still I did not get how nucleotides are formed and the links between its components. but your video is short yet so powerful and more helpful to me. thanks again. great job.

[@aivi8042]

Thanx a lot

[@nasreenkhan1917]

Bohot acche shabbu bhai

[@subbalakshmipatakamuri475]

very good

[@aswitrishu4465]

🌷Amazing 🌷

[@collections7918]

wow nice

[@bijibinoy5684]

I need the polarity I didn't get that sad

[@sancraft8303]

Nice

[@sshaikh9864]

Thank u sooo much for great explanation I have studies this in many class still I didn't clear but your vedio solve my problem❤️

[@varshashekar3335]

Thankyou sir

[@wowitslm7]

Thank you! Short, simple and well explained

[@peanutbatter_10k]

Have an exam tomorrow,thanks sir

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I loved it my all pblms are solved thank you so much😊😊😊😊

[@pranjalidwivedi3184]

Very helpful 🙏

[@7activestudio]

Glad to hear that

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Nice video...

[@anukulchaudhary]

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Gjb

[@naturelover472]

😘❤

[@priyankapriyanka9441]

Tq so much finally I understood very well

[@7activestudio]

Thank you Priyanka

[@ahnasswin6890]

Goal Cs hmm wn