Needed this, have my exam tomorrow. Another great video!
@MissEstruchBiology
3 жыл бұрын
Best of luck for tomorrow!!! 🤞🤞🤞
@melvinshinu4316
3 жыл бұрын
good luck!
@crazywolf8019
3 жыл бұрын
How’d it go?
@adxm0382
3 жыл бұрын
@@crazywolf8019 Went well, got a B which is exactly what I needed
@crazywolf8019
3 жыл бұрын
@@adxm0382 ayy, good on you :)
@epicfunnyvideos9289
Жыл бұрын
Thank you so much for your efforts the explanation is excellent and finally now i understood what is happening
@FriedaWilhelm
3 ай бұрын
Thank you miss estruch
@MissEstruchBiology
3 ай бұрын
you're welcome 😊
@lara3024
3 жыл бұрын
Great video! Everything’s explained really well, thank you!
@MissEstruchBiology
3 жыл бұрын
Thank you 😊 So pleased you liked it.
@Wojbest_YT
3 ай бұрын
you should have a beyond the spec section at the end for things beyond the spec but some people want to learn more i seen another channel do it
@MissEstruchBiology
3 ай бұрын
That's a great idea
@reiwasaru
10 ай бұрын
I actually understand it now wow
@MissEstruchBiology
9 ай бұрын
yay
@tct5757
3 ай бұрын
So helpful
@MissEstruchBiology
3 ай бұрын
Glad it was helpful!
@gobi9783
Жыл бұрын
Redoing my paper 1 mock from year 12 on thursday crazy how i learnt this in like 10 mins
@MissEstruchBiology
Жыл бұрын
wooo so glad it helped
@domanidouglas9192
3 жыл бұрын
I have my exam in an hour!! Thank UUU
@MissEstruchBiology
3 жыл бұрын
I hope it went well!
@crazywolf8019
3 жыл бұрын
How’d it go
@domanidouglas9192
3 жыл бұрын
@@crazywolf8019 It actually went really well!
@crazywolf8019
3 жыл бұрын
@@domanidouglas9192 great! Glad it went good :)
@harrydonna90677
2 жыл бұрын
OH MY DAYYYYSSSS TY SM!!!! THIS HAS RLLY HELPEDXXXX
@MissEstruchBiology
2 жыл бұрын
So glad that it helped you so much!
@officialusherrunozivei
Жыл бұрын
Well explained I can't believe I understood today and I have my bio p2 exam tommorow
@MissEstruchBiology
Жыл бұрын
Hope it went well!
@daaragoodluck
3 жыл бұрын
Your Vids are Great!
@MissEstruchBiology
3 жыл бұрын
Thank you :D Glad they are helping
@ajtv6208
2 жыл бұрын
Have my exam on Wednesday, amazing vid
@MissEstruchBiology
2 жыл бұрын
Good luck!!
@ajtv6208
2 жыл бұрын
@@MissEstruchBiology i did alot better using your videos thank you !!! my teacher recommended you
@kayceelondon
3 жыл бұрын
great video!
@MissEstruchBiology
3 жыл бұрын
thank you 😊
@danix6452
3 жыл бұрын
Love this!!
@MissEstruchBiology
3 жыл бұрын
thank you 😊
@ryou6453
7 ай бұрын
thanks!
@MissEstruchBiology
7 ай бұрын
you're welcome 😊
@Nickuxx7
2 жыл бұрын
i dont understand why for your method you say dna helicase unwinds the double helix but in other videos rna polymerase is joined at the start and the hydrogen bonds are broken ?? which is right
@user-vq4qy2hq5i
7 ай бұрын
In the Spec (3.4.3) for AQA, it states 'Gene mutations involve a change in the base sequence of chromosomes. They can arise spontaneously during DNA replication and include base deletion and base substitution. Due to the degenerate nature of the genetic code, not all base substitutions cause a change in the sequence of encoded amino acids. Mutagenic agents can increase the rate of gene mutation.' Are we just supposed to know that this can happen, or the detail of what the substitutions and deletions do? Also, is there a video covering this?
@BLACKWHITE-og3rg
9 ай бұрын
thank u tea cher for explaining love u
@javishulo3905
3 жыл бұрын
THANK YOU!!!!! SO HELPFUL
@MissEstruchBiology
3 жыл бұрын
you're welcome 😊 Glad you liked it
@mikrokosmos1652
2 жыл бұрын
Your videos are so helpful for the IMAT too! After RNA polymerase joins the RNA bases with the complimentary DNA bases and pre-mRNA is created, what happens to the DNA strand that you took the bases from? Does it remain baseless? Or do the bases 'grow back'? Also since tRNA already has an amino acid attached to it, does this mean protein synthesis only refers to putting amino acids in the correct sequence to form a particular polypeptide? I used to think protein synthesis was the process of making an amino acid so I was a little confused. I'd be really grateful if you could clear this up for me since I have no base in biology.
@adailyfact
Жыл бұрын
Good luck with the IMAT, hope you got into medical school!
@dannycartwright579
Жыл бұрын
Thank you
@MissEstruchBiology
Жыл бұрын
you're welcome!
@ibrahimmiah562
3 жыл бұрын
Is it not the enzyme rna polymerase which unwinds the helix?
@MissEstruchBiology
3 жыл бұрын
no, but the cgp textbook says that in error. Any enzyme that is a polymerase makes a polymer
@ibrahimmiah562
3 жыл бұрын
@@MissEstruchBiology oh ok thank you!
@aleezaahmed3947
3 жыл бұрын
i think gyrase enzyme is what unwinds the helix
@shannonharper2460
3 жыл бұрын
How much would you recommend the workbook? Is it full of exam style questions or more useful for the preliminary learning stage? Many thanks for all your videos!!
@MissEstruchBiology
3 жыл бұрын
Hey, Which workbook are you referring to? Glad you like the videos 😊
@destined0645
Жыл бұрын
Please answer, some source state that it is RNA polymerase that does both unwinding and synthesis of the strand in transcription. But for DNA replication it is DNaA helicase . So it is RNA POLYMERASE that unwinds or helicase in transcription ?
@yoirfhmumfthtf
Жыл бұрын
DNA helicase unzips the DNA strand during DNA replication and it starts from the first hydrogen bond and travels to the end. But because the helicase enzyme can't 'see' where the specific genes it needs to unzip start(in transcription), RNA polymerase has to unzip the small sections of DNA instead as it knows where genes start and end. This is what my Biology teacher told me but it's better to just go with whatever your textbook says.
@claudiaperretta6249
2 жыл бұрын
Hey, thanks for the vid! Is this still ok to revise from for the OCR exam board? Thank you!
@MissEstruchBiology
2 жыл бұрын
yes! 😁
@claudiaperretta6249
2 жыл бұрын
@@MissEstruchBiology awesome thanks so much!
@zariyahsaoirse5952
3 жыл бұрын
Isn’t DNA gyrase the one responsible for the unwinding of the DNA double helix, miss?
@MissEstruchBiology
3 жыл бұрын
in reality there is more than one. For AQA, DNA helicase is all that students need.
@zariyahsaoirse5952
3 жыл бұрын
@@MissEstruchBiology I see, thanks miss!
@jencyauriavales4278
2 жыл бұрын
Hi, as your an experienced biology teacher, I wanted some advice..... I'm half way into yr 12 and I haven't made proper notes and have not consolidated content we have been taught. I have realised my mistake but I am wondering whether its too late to start as I know I want to do really well but I have also wasted half a year. Thank you so much
@freyaskuse6476
2 жыл бұрын
Hi! I'm probably not the person you're hoping an answer from, but if you search up 'Biology with Olivia' on a website called TES, she has condensed notes available for free for the whole of year 12! I have made my own notes as well, but they should be useful to you as it would be difficult to make notes alongside learning the rest of year 12 content. I hope it helps :)
@MissEstruchBiology
2 жыл бұрын
Hey, Definitely not too late. If you are after notes, I have the full AQA A level notes available here. missestruch.co.uk/product/a-level-aqa-biology-notes-full-set-topics-1-8-copy/ These include all the theory for Y12 and Y13, highlight keywords and essay links for all topics. With these you won't need to make any extra notes, so instead you can focus on active revision strategies. Hope that helps 😁
@jencyauriavales4278
2 жыл бұрын
@@freyaskuse6476 heyyy!!!! Thank you sooo much...... you didn't even have to help me but you did which was very kind of you! I looked it up and now only topic 1 is free and I have to pay for 2,3 and 4 but nonetheless those topic 1 noted will be very helpful..... I was thinking the same thing on how I will manage to learn new content while making notes for old content. Are you doing biology a level at the moment or have you already finished? Thank you so much once again
@user.004
2 жыл бұрын
@@jencyauriavales4278 Hey I have her topics 1-4 notes, if you'd still like them? i can only send them as an email attachment though
@user.004
2 жыл бұрын
@@jencyauriavales4278 Hi, I can send them now if you'd like? And no problem x
@whomerdoodles
3 жыл бұрын
Helpful video series! But doesn't rer do protein folding or do the Golgi and rear both do it?
@MissEstruchBiology
3 жыл бұрын
Hello, The main function of RER is to synthesise proteins as they have ribosomes. These proteins are then sent to the golgi to be processed and packaged. Hope that helps.
@whomerdoodles
3 жыл бұрын
@@MissEstruchBiology sorry, so rer does not do protein folding?
@icysid7855
5 ай бұрын
this is RAD dawg yhhhh
@esmmm990
2 жыл бұрын
7:02 do we need to know the name of the enzyme for aqa
@DogeDogeriffic
2 жыл бұрын
Hello, I’m currently really tempted to buy your A-Level biology notes for topics 1-8 but it’s a tad bit pricey is it possible to get the 25% bursary discount despite not being on bursary?
@shahzarbukhlaw5963
Жыл бұрын
I’m confused is it DNA helicase or RNA polymerase to break the hydrogen bonds at 3:35
@MissEstruchBiology
Жыл бұрын
DNA helicase breaks the H bonds
@lilyberchem
Жыл бұрын
Yeah DNA helices breaks the bonds, RNA polymerase makes the phosphodiester bonds -- I believe
@tomrackham693
3 жыл бұрын
HERO
@MissEstruchBiology
3 жыл бұрын
🤣 thank you 🦸♀️🦸♀️
@aaronrajimon312
3 жыл бұрын
Hello, could we say free RNA nuclotides complantery pair with exposed base pairs or are we suppose to say free MRNA nuclotides???
@MissEstruchBiology
3 жыл бұрын
hello, RNA nucleotides should be sufficient as long as you refer to the fact it is forming mRNA somewhere in your answer.
@aaronrajimon312
3 жыл бұрын
@@MissEstruchBiology thank you
@massacres2118
3 жыл бұрын
Legend you
@MissEstruchBiology
3 жыл бұрын
😁😆 thank you!!!
@alevelphysics6606
3 жыл бұрын
❤️
@MissEstruchBiology
3 жыл бұрын
Thank you 😊
@ak-7865
2 жыл бұрын
2 amino acids delivered by tRNA ????? Isn't it one
@ak-7865
2 жыл бұрын
Also if u don't mind me asking aren't u meant to mention phosphodiester bonds forming in transcription pls respond😀
@MissEstruchBiology
2 жыл бұрын
hello, two amino acids are delivered at a time by two different tRNA molecules.
@MissEstruchBiology
2 жыл бұрын
depends of the exam board. RNA polymerase joins adjacent RNA nucleotides together is the key marking point for AQA, but yes that is by phosphodiester bonds
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