cryodragoon (September 7, 2008 at 8:01 am)

I just reviewed my biology notes and I understand 2 through 4 now. I don't think I ever heard of housekeeper genes and regulatory genes before, but a quick google search will probably clear that up.So thanks, and all, but I think I'm gonna make it on my own ^^

211123436 (August 21, 2008 at 3:04 pm)

i can try and explain it a bit more if you want. I'm not sure how much you already know?

211123436 (August 21, 2008 at 3:03 pm)

2) and 3) sorry if i miss the point here but they all know where to go pretty much based on chemical interactions. The detailed pathways are very very complex i imagine but it works by 'when one thing attaches here it changes configuration at another point thus allowing the next thing to attach and so on and so on' The mRNA finds the ribosome by chance while its drifting by and complementary bases bind and start the process. It's unimaginable to think about the speed this acctually happens.

Mudbikerz (July 23, 2008 at 9:59 pm)

Here's some good re-search;wetenschap-eindtijd(dot)com

rapemap (July 15, 2008 at 9:38 am)

1) That depends. The so called "housekeeper genes" are constantly active. Regulatory genes, in contrast, need signal to start the process. They are controlled by up- and down-regulation mechanisms.

saphira512 (July 9, 2008 at 1:42 am)

oops ran out of room there.4) well basically they just go in, and the ribosomes help them grab the parts that are floating around their ECF, or cytoplasm. *The codons of tRNA match up with their partners RNA nucleotides (A-U, G-C) and it's used as a catalyst to bring forth the amino acid. (like an eqn. tRNA+nucleotides=amino acid) i know it's kinda confusing but some things you really can't explain. everythings done by chemical reaction and attraction. HOPE THIS HELPS!! x)

cryodragoon (July 2, 2008 at 5:57 pm)

I've got some questions to anyone with more knowledge:1) Is this entire process being done constantly? 'Without resting'? 2) How does the mRNA 'know' where to go, and how does it position itself 'properly'?3) How does the 'large ribosomal sub-unit' "know" when to bind to the other part after the first tRNA is bound? 4) Is this process largely 'accidental' (i.e. there are loads and loads of components swimming about and it's largely by accident that they get to their 'niches' and connect?

tomasg92 (July 1, 2008 at 10:09 pm)

Helicase at the ADN replication, here we have the ARN Polimerase.

Fringes007 (June 24, 2008 at 10:58 am)

thanx this is gnna help me for my test

VoteNixon2008 (June 22, 2008 at 6:40 pm)

And one the second day god created the protists, and it was good...