.

[akira88]

I used Heinemann, but how they first introduced how proteins are made was with some analogy (office, "photocopying", workers etc.) Grr okay, the analogy is fine, but I don't particularly like it

Hmm well... transcription occurs in the nucleus? mRNA is made and then goes out of the nucleus into the cytoplasm... to the ribsomes? tRNA then carries an anti-codon and something something something and then arranges the sequence of amino acids that fits into the coding of the mRNA? Oh god I'm so lost. I've looked up the meaning for translation multiple times but it doesn't seem to stick in my mind, probably because I still don't understand it

totally agree, their comparison of dna/rna to an office blows.  i'm really confused over the whole transcription, translation and tRNA, mRNA and rRNA.  might learn it properly over the weekend.

I know the explanation needs your undivided attention to understand! Haha me too, I might sit down properly and have a good look at it

[akira88]

What SS are you guys aiming for?

Hmm last year I would have been happy with 35+, but now that I'm into it, I'm hoping to get 40+ I was going to ask you the same question and realised it was already in your sig..

[stonecold]

thanks andrew, will do.
i was always meaning to take douchies virtual biology classroom to the next level and introduce videos lol.

speaking of douchy, I wonder when the next podcast will be, there hasn't been one for a while now...

[TrueLight]

Your explanation seems okay, although I better learn what an anti-codon is My understanding so far is that: mRNA copies the required segment of DNA carrying the codons that represent AAs. tRNA transfers the specific AAs to the ribosome and rRNA helps by reading the mRNA instructions and directing assembly of the polypeptide chain.

the DNA acts as a template for mrna synthesis... and that mrna sequence of nucleotides is read in codons (3 nucleotides at a time) by the ribosome, which brings the correct trna molecule (which has an anticodon) which recognises the complementary codon, and that then is what the amino acid sequence is based on... because the trna has the amino acid attached to its structure and thus as the ribosome moves down the mrna it, more amino acids are added covalently to the growing polypeptide chain...

but yeah i guess u don't have to worry since its unit 4?

but yeah watch some videos... its better to visualise it

[akira88]

Your explanation seems okay, although I better learn what an anti-codon is My understanding so far is that: mRNA copies the required segment of DNA carrying the codons that represent AAs. tRNA transfers the specific AAs to the ribosome and rRNA helps by reading the mRNA instructions and directing assembly of the polypeptide chain.

the DNA acts as a template for mrna synthesis... and that mrna sequence of nucleotides is read in codons (3 nucleotides at a time) by the ribosome, which brings the correct trna molecule (which has an anticodon) which recognises the complementary codon, and that then is what the amino acid sequence is based on... because the trna has the amino acid attached to its structure and thus as the ribosome moves down the mrna it, more amino acids are added covalently to the growing polypeptide chain...

but yeah i guess u don't have to worry since its unit 4?

but yeah watch some videos... its better to visualise it

Hmm I actually knew and understood that, I think my only worry is not being able to word it very well (as seen in my attempt before )
Is it really unit 4? So all we need to know about proteins at unit 3 is what aleitu1 posted?

[TrueLight]

hmm dunno...i thought u did ... maybe u dont

[TrueLight]

Your explanation seems okay, although I better learn what an anti-codon is My understanding so far is that: mRNA copies the required segment of DNA carrying the codons that represent AAs. tRNA transfers the specific AAs to the ribosome and rRNA helps by reading the mRNA instructions and directing assembly of the polypeptide chain.

the DNA acts as a template for mrna synthesis... and that mrna sequence of nucleotides is read in codons (3 nucleotides at a time) by the ribosome, which brings the correct trna molecule (which has an anticodon) which recognises the complementary codon, and that then is what the amino acid sequence is based on... because the trna has the amino acid attached to its structure and thus as the ribosome moves down the mrna it, more amino acids are added covalently to the growing polypeptide chain...

but yeah i guess u don't have to worry since its unit 4?

but yeah watch some videos... its better to visualise it

ah i forgot ... premrna splicing ... and other things.. promoters, utr, start, intron, exon, open reading frame, terminator sequence, release... but thats beside the point lol

[akira88]

I don't know what those are ^ Would I have to know? :S

[TrueLight]

i dunno... but i reckon it will make it easier for u to understand the overall process ... if u understand what is actually going on..

but yeah i dunno

[minilunchbox]

I don't know what those are ^ Would I have to know? :S

Nah, that stuff is unit 4.

[akira88]

I don't know what those are ^ Would I have to know? :S

Nah, that stuff is unit 4.

Thanks

[TrueLight]

this board is quiet lol what u guys learning now or up to?

[akira88]

It feels like I haven't had a biology class in ages! The last class we were looking at ... I don't even remember :O What was your favourite part of biology TrueLight? (I'm assuming you've finished it )

[TrueLight]

yeah ive finished it a few years back
...bored now..waiting for echo to work!!!rrrr
um...i think...lol some of the experiments were good... i dunno which unit this was but i still remember this one where we had to spray the heck out of ppl and then put a fan on them and then after they were soaked with water and ice, they had to go in blankets and heater.. in terms of content i liked the molecular bio stuff...i remember hating the evolution stuff...i didn;t like the genetics stuff mendelian stuff... and immune system stuff was really cool.. lol i think thats what got my interest started in immunology... biotech stuff was good i think... yeah lol thats all i can remember i think..

[stonecold]

we are learning about cellular respiration and photosynthesis, and are also in the process of doing our enzyme prac/sac

also here is a vid i found really helpful on dna transcription, translation and protein synthesis
http://www.youtube.com/watch?v=983lhh20rGY&feature=related