00:30 = What is a genome + a proteome? 01:17 = Overview of protein synthesis 02:09 = mRNA + tRNA structure 04:13 = Transcription 06:04 = Splicing 07:22 = Translation 09:51 = Exam questions and mark schemes

@saweraehsan8545

3 жыл бұрын

A level Biology Help I would like to know if you have copy of these slides ?

@betul-ev2fu

3 жыл бұрын

@@saweraehsan8545 u better ss it

I’m so glad I found this video. I struggle with Biology so much. I’ve been watching videos on protein synthesis & I was still so confused, Then I found this & you explain it so well in a way that I find easier to understand. Thank you!

@AlevelBiologyHelp

2 жыл бұрын

Ah I'm so glad! X

These videos are so helpful. I got an A* in my last test and I showed my teacher the channel and he's recommended it to the class

@AlevelBiologyHelp

Жыл бұрын

That's great to hear - so happy I could help!

I have my exams tomorrow and I’m going through these videos thank you for explaining it so well!!!

@thepsychoticempress03

3 жыл бұрын

Us

@AlevelBiologyHelp

3 жыл бұрын

I hope your exams went well!

@tywinislitandeddard9988

3 жыл бұрын

How did the exam go? I got mine in a week so just wondering

@magdakaliciak6500

2 жыл бұрын

Did you pass?

I didn’t understand protein synthesis at all until this video, thank you so much!!!!

Thank you so much, I appreciate this so much!!

your saving my life with these

Thank you so much ! 👍

Thank you very much that was very helpful and very well explained

Your videos are so helpful thank you so much

thank you so much for the video - i have my exam in 2 hours

Thank you!

Thankyou sm

thank youuu

I have a query, please help me in understanding it. During translation, mRNA attaches to the start codon of ribosome OR Ribosome attaches to the start codon of mRNA? Which one of these has start codon, mRNA or ribosome?

@AlevelBiologyHelp

2 жыл бұрын

Hi, it's the ribosome which has tRNA with a complementary anticodon that attaches to the start codon of the mRNA :)

In the slide, the second part of transcription is described as "free mRNA nucleotides align and pair with their complementary bases" but in the mark scheme for the exam question it is described as "RNA nucleotides attracted to exposed bases; (attraction) according to base pairing rule." I memorised what was on the slide but when I wrote it down for the exam question I dont think I would have got the mark because I didn't say anything about the nucleotides being attracted. Is what I wrote still okay opr should I try to learn the mark scheme instead?

@AlevelBiologyHelp

2 жыл бұрын

Hi, I think that would still get the mark!

Thank you

@AlevelBiologyHelp

3 жыл бұрын

You're welcome!

so fkin helpful, nice one!

Hi, I thought that RNA polymerase unwinds the DNA strand in transcription, as well as joining adjacent nucleotides together. Have I learnt this wrong?

@AlevelBiologyHelp

2 жыл бұрын

It's DNA helicase that unwinds the DNA strands :)

do we not need to know about the enzymes involved within translation? Those that make the peptide bond and those that break the bond between the tRNA and amino acid?

@AlevelBiologyHelp

3 жыл бұрын

Hi, you don't need to know that at A level :)

@RohanSingh-uu8pl

3 жыл бұрын

@@AlevelBiologyHelp thanks for your reply!

In the very first exam question, it asks how mRNA is produced in the Nucleus. I thought you would right about Splicing as that makes mature mRNA from Pre-mRNA. However, you said you need to write about transcription, but why when in transcription Pre-mRNA is produced not mRNA????

@AlevelBiologyHelp

5 ай бұрын

You can write about splicing but it's mainly writing about transcription given that it's a 6 mark question (splicing doesn't have many steps so you can't get many marks on that). If you look at the mark scheme, you can write any 6 of the points there. :)

I love you