Search found 11 matches

by alcyon
Mon Apr 16, 2007 1:56 pm
Forum: Cell Biology
Topic: organelles (both plant and animal)
Replies: 11
Views: 7948

Oh...so the ribosomes only attach to the ER during protein synthesis? And, just wondering, where did u get such clear information from? My highschool text book said something really vague about this and when i tried to find out I didn't know where to look. Even some of the Uni texts only gave a fuzz...
by alcyon
Sun Apr 15, 2007 5:10 pm
Forum: Molecular Biology
Topic: Simple DNA question
Replies: 5
Views: 2191

@kotoreru: yes i think you're right in saying that, becasue the molecules of DNA in the PCR process is usually only a cut-out (or restricted) part of the original much-longer DNA, and they do separate at some stage into separate strands (but not always, i think it can be done via similar process of ...
by alcyon
Sun Apr 15, 2007 4:26 pm
Forum: Evolution
Topic: A really tough (for me) evolution question...
Replies: 15
Views: 11360

as everybody (pretty much everybody, anyways) agree, answer two is not completely correct but since you're in a test that's the best answer. and there's a different way of looking at it as well, that is when a allels changes (or is being created or whatever), the genotype also changes. the question ...
by alcyon
Sun Apr 15, 2007 3:53 pm
Forum: Evolution
Topic: Misconceptions about evolution
Replies: 4
Views: 3325

and besides, the so called anti-Darwinists thenselves couldn't offer a closer explaination. We'll consider their view when they come up with something better.
by alcyon
Sun Apr 15, 2007 3:50 pm
Forum: Evolution
Topic: Natural selection or Genetic mutation?
Replies: 11
Views: 5303

not much argument need to be done in this, because both are accepted theories and are supposed to work together. why should we only believe in one of them?...
by alcyon
Sun Apr 15, 2007 12:32 pm
Forum: Molecular Biology
Topic: Simple DNA question
Replies: 5
Views: 2191

but since the 'shape' of an DNA molecule is described as a 'double helix', then i think when we talk about a DNA molecule we'd be talking about both strands. The modle in which DNA separates into two single strands the replicate is only a rough model to show the relationship between the original DNA...
by alcyon
Sun Apr 15, 2007 9:14 am
Forum: Cell Biology
Topic: effect of temperature on the survival of yeast cells
Replies: 241
Views: 182972

@sudad_tariq: ....I think i did that in yr10...
by alcyon
Sun Apr 15, 2007 8:58 am
Forum: Cell Biology
Topic: lab report. need help'' PLEASE! it kills me.
Replies: 6
Views: 3132

Emm...it could be testing the reaction of Catalase with differen tissues that used to be done in highschool...but then fresh liver contain lots of Catalase anyway so what's the point...
by alcyon
Sun Apr 15, 2007 8:50 am
Forum: Cell Biology
Topic: lab report. need help'' PLEASE! it kills me.
Replies: 6
Views: 3132

and i'm still wondering what exactly is this person doing??? Is it supposed to be testing for active protein? or is it the tissue's reaction with some kind of oxido-reductase?......mysterious...
by alcyon
Sat Apr 14, 2007 3:11 pm
Forum: Cell Biology
Topic: organelles (both plant and animal)
Replies: 11
Views: 7948

some say that if a protein that will be transported out of the cell in the end is being made, it will first happen on a ribosome not attached to the ER, and then the already thynthesized part of the peptide chain will direct the ribosomes toward the ER; Yet some others has it that some ribosomes are...
by alcyon
Sat Apr 14, 2007 12:00 pm
Forum: Cell Biology
Topic: organelles (both plant and animal)
Replies: 11
Views: 7948

but some plants don't really have them though... why do some animal cells need them (if they really need them) and some plants don't?