Nucleosome Model | Class 12 CBSE Biology | Pankh Academy Part 3

[@PankhAcademy]

Please do not forget to add your views in the comment box! Keep supporting champions :)

[@sangeetsongs7191]

DNA turns around histone proteins approximately:
*1.85 to 2 times per turn (or wrap) around the histone octamer*
However, considering the entire nucleosome, DNA makes:
*13-14 turns (or wraps) around the histone octamer*
This corresponds to:
- Approximately 147 base pairs of DNA wrapped around each nucleosome
- 13-14 turns, with each turn being about 10-11 base pairs
*Nucleosome Structure:*
- Histone octamer (8 histone proteins: 2 copies each of H2A, H2B, H3, and H4)
- DNA double helix wrapped around the histone octamer

[@Studypoint2922]

Mam you r way of explaination is more excellent from other teacher Maine bohat se bio ke teacher dekhte jaise aap example use karte ho bio ekdum se samajh aa jati ha

[@mohanlalmerotha5816]

Best explaination ma'am

[@Bluewhale-phantom]

Outstanding explanation ma'am but only one problem, please remove the BG Sound. Because our Focus and concentration should be on your explanation not on BG sound

[@sangeetsongs7191]

Reverse transcription is catalysed by enzyme called reverse transcriptase.

[@motivational_quotes460]

Teaching style is best💯

[@jalajababu1365]

Nice explanation👍👌🤗

[@sangeetsongs7191]

Nucleosome and solenoid comparison:
*Nucleosome:*
- Basic unit of chromatin structure
- Consists of DNA wrapped around histone protein octamer
- Approximately 147 base pairs of DNA per nucleosome
*Solenoid:*
- Coil of wire carrying electric current
- Magnetic field generated along central axis
- Used in physics to describe electromagnetic induction
*Comparison:*
1. *Coiling:* Nucleosomes coil to form chromatin fibers, similar to how wires coil in a solenoid.
2. *Structural organization:* Both exhibit hierarchical organization, with nucleosomes stacking to form chromatin and wires coiling in solenoids.
3. *Compactification:* Nucleosome coiling condenses DNA, while solenoids compactly store magnetic energy.
*Chromatin Fiber Structure:*
- Nucleosomes stack to form chromatin fibers
- Fibers coil to form higher-order chromatin structures
- Solenoid-like coiling facilitates DNA compaction

[@Hybrid_Flavour]

Wow just amazing explanation 💝❤️❤️❤️❤️💝

[@dughkids9963]

Mam I am just speecless
u did a commendable job

[@knowledgeandfunwithtejwant7656]

Nice explanation mam ❤️❤️

[@komalshere1541]

Love ❤u ❤😘🤟dii best 🤞explain

[@keyarasuraiya779]

Mam your voice awesome

[@AnshSingh-sr4px]

Good explanation

[@suraj_kashyap_10m11]

Wow have a nice video mam🤗

[@kritikatripathi8504]

Mam please syllabus jaldi complete karwa do please mam

[@nageshpachavanp]

Mam can you recommend nice college for 10th students for 11 and 12 studies

[@nidhishishodiya455]

Thanks mam

[@Jatinthakur-qp2bx]

Love you 😘

[@tamannaartmakerlife4424]

Mam ye part no. 2 hai to isme 3 kyu let kha hai ham confused ho gye the

[@ishita_tyagi]

❤❤❤

[@rajvishwakarma4084]

I am big fan of Priyanshi ma'am,
I want to work with her in future 😇😇

[@PankhAcademy]

Definitely you will :) All the best!

[@Shahnawaz_Ahmad_1]

mRNA , tRNA, rRNA explanation is best 😂❤

[@sangeetsongs7191]

13/4 turns?

[@sangeetsongs7191]

Or 13 to 14 turns

[@Tecknotasksians]

Mam app mujhe work from home batayegi plzz mujhe jarurat h reply me plz

[@PankhAcademy]

write to us at [e-mail] :)

[@kuldeepchaudhary7597]

You are my protein 🙋i am your DNA mm ♍♏

[@stormblood8203]

😸💖😸💖😸💖✨✨✨

[@sangeetsongs7191]

?

[@malviyajii08]

Mam part no.3 hai na kii 2 🤣😂

[@theducklingvibes4673]

Nice explanation mam 👍👍👍

[@UzairAbas236]

Thanx maam