Chapter 6.2a - Protein Synthesis (Transcription, RNA mod, Translation) | Cambridge A-Level 9700 Bio
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- Опубліковано 26 чер 2024
- Based on the 2022-2024 syllabus
Cambridge Assessment International Education
9700 AS Biology
Full Chapter 6 playlist:
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my academic comeback is all thanks to this woman, my A level exam is literally in a few hours. You are the greatest thing to have ever walked the face of the earth. I would marry you if I could. Thank you for saving my life
Your channel is an earthly comfort, on God this is carrying me through college.
I just finished my paper 2 for MJ 2023, and it went brilliantly. I’ll be surprised if I lost more than 5-10 marks.
Thank you, greatest teacher ever. I’ll be eternally grateful.
how did it go ?
How were the results
@@SaveMyAL Got an A in Bio AS
@@amanuelyemane6553 got an A in AS bio
@@FalconEye2015 congrats
absolutely carrying my as levels rn THANK YOUUU
Hi miss ! Just encouraging you to keep uploading more videos as we are always here to support you :)
Thank you so much for your videos! you helped so many students! Ms. Beh is a literal lifesaver 💜💜💜
best explanation of as bio on youtube thankssss
Well explained 🤗appreciated ''
Hello Miss Beh, I wanted to express my gratitude for your assistance - you've been a tremendous help to me. I'm happy to report that alhamdulillah paper 2 didn't turn out to be as difficult as I had anticipated.
However, I'm still looking to improve my performance on paper 1. My exam is coming up in about 20 days and I'm hoping to achieve a score of above 35 out of 40. Do you have any tips or advice on how I can best prepare for this? Thank you in advance for your help!
Practice past papers till you can spot all the common tricks! Make sure you know why the answer is how it is.
Thanks 👏
ur the best teacher everrrre..r u still active on this acvt?
hello behlogy i just bought your as level bundle notes. could you please tell how to download cuz it doesn't show the option of it or will it just be shipped?
Check the email address you keyed in when you purchased the bundle. I included the instructions and a link to a zip folder! Could be in the junk mail as well... Email me at behlogy@gmail.com if you have any more trouble with receiving the notes! :)
Hello thanks for videos ,I have a question Why in most pictures of transcription including the picture in page 152of Cambridge ,it shows that RNA polymerase is bind to 2strand of DNA?
It multitasks heh
@@behlogy I didnt get tbh😖
Hi Ms Beh! In 14:41 why is it written that protein synthesis occurs in nucleus? Isn't translation in ribosome and transcription in nucleus?
Ah yes should be have been better phrased as STARTS in the nucleus.
for past papers should we do all variants or only the variant we are appearing for? is doing may june oct nov past papers from only my variant enough?
No it doesn't work that way. I would recommend doing the most recent 3-5 years, all exam seasons.
@@behlogy noted. all variants too?
Hey, got a question. I have my as and a level biology exam in march session and i wanna know if i can pass if i memorise the past papers
same…. I literally just started studying a levels and trying to go through all chapters in almost these 2months and next year imma start doing past papers
memorising without understanding is a big no no. recent past papers have become quite difficult, so i definitely recommend working through each concept. no shortcuts!
past papers are great for practice though!
15:00
hi miss… is oogenisis & spermatogenisis still in the syllabus for A2?
Nope
Hi! Its me again 😛 I have a few question based on this topic. 1) Does the breaking of hydrogen bonding cause the unwinding of the DNA or does it unwind first and then the hydrogen bond is broken? 2) Why is the non - transcribed strand called the coding strand when it doesnt code for mrna ?
3) Is the tRNA formed from the 5' to 3' strand of DNA whereas the mRNa is formed from the 3' to 5' strand ? Is that why we dont need a ligase enzyme for mRNA?
3) Do the large and small subunits of a ribosome exist separately ? Since the gif in 19 minutes of your video shows tRNA pulling the large subunit of ribosome to the small subunit.
4) Where exactly in the process of protein synthesis do we need atp ? 5) correct me if i am wrong - mRNA binds to the small subunit of the ribosome and tRNA binds to the large subuint of the ribosome. Yeah?
Sorry for the list of questions 😝 I understand concepts better when I have a bigger picture. Great video by the way ❤ I am done with 5 bio chapters thanks to your detailed explanations ❤
1) unwinding is separate from breaking of H bonds. Unwinding = DNA double helix becoming like a ladder shape. Unwinding and breaking of H bonds (aka "unzipping") happens at the same time.
2) The mRNA sequence is complementary to the template strand, but same as the coding strand (but T is U)!
3) both new tRNA and mRNA are both RNA. Both formed from the 5' to 3' direction in the same process. Ligase is used to join DNA fragments on the lagging strand in DNA replication, not transcription. RNA is formed in a continuous manner, because only one DNA strand out of the two is used. Think you are confused, please rewatch the videos and construct a table to compare and contrast...
3) you don't learn this in depth, but actually yes they can assemble and disassemble and exist separately.
4) you dont learn the detailed mechanisms of transcription and translation in enough depth to know... But in simple terms, some of the enzymes require ATP to work. There's also activation of nucleotides needed (transfer of two phosphate groups from ATP) and also active transport of nucleotides and other things.
5) yes!
@behlogy Aww, thank you so much for taking the time to respond 🖤 May God bless you
Hi Ma'am
I hope you are well
Can you please guide which chapter contribute most in McQ/P1 and theory/P2 paper if we analyze past paper and I also wanna discuss I have not done with even a single practical in school what should I do
Every chapter comes out equally in a exams. Cambridge makes sure of that. I have a Paper 3 playlist! Go watch
21:00
Do we have to learn that whole table in 26:00 time ?
Nope. It's provided.
Hi Ms Beh, I want to purchase your AS bundle but I don’t know how to cancel subscription for the free sample. Any help would be great!
Also, are the notes provided after payment more comprehensive than these slides?
Contact the site. I dont own it so im not sure either. And It's honestly about the same!
shouldnt there be 64 types of trna for 64 types of nucloetide
You mean 64 diff combinations of mRNA codons/DNA triplet code. Valid question. It's not in the syllabus but it's bcs of something called the wobble hypothesis. Where there is a "wobble" in the structure of tRNA, which enables it to be ok with binding diff nucleotides at position 3 of a codon. Binding of the first two codons is more specific.
miss I always lose at most 10 marks in paper 2, so you think this is good enough for A?
For sho. Keep it up!
@@behlogy thank you so much miss, sorry if I burdened you with lots of questions.
Hi ma'am
I attempted few P1 and my score is 22-23 should I focus on them for now or on P2.
I have my P2 exam in mid of may and P1 on 11 June I don't have any other exam after 16 except P1 of physics chemistry and biology
Please guide should I solve P2 for now or P1
You should aim for at least 30-32 over 40 for P1 if you want a A or A*
And around 80/100 for P2. Work on whichever needs more help
Miss why less vedios available on your channel
What do you mean...? All chapters are there :)
انتي نهقة ومشطوبة بس والله قدها
بحبك
Not sure if you are strange or the translation is strange but errm thanks! Im married 😂
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From what i know, alt academy or allery chemistry is doing a great job 😊
I from India
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.....errm I feel like a boomer rn. But errm... You're welcome....?
@@behlogy ayoooooo maaam I studied for the exam with your videos since the beginning of the year and it was really good for me.
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