Qualification > Sciences
AS Biology Paper 2
kratos009:
Yeah cause apparently when i came out of the exam room there were arrows indicating the direction of movement of calcium ions... >:(. It was moving against the concentration gradient out of the cell...apparently...
Dooraven:
Yeah its 100% active transport. Since the arrows indicate which way the ion was moving. I screwed up the last question and I think I lost a mark where "why does the daughter cells have to be genetically identical". I said it prevents mutations but what else?
MaNi_DaDuDe:
--- Quote from: vince_24 on November 17, 2009, 07:27:46 pm ---what the...
It isn't facilitated diffusion...? O.M.G FAIL >_>
I am pretty sure the question said "It is 1000x LESS concentrated inside..." so is it really active transport?
--- End quote ---
I thought all ions move via active transport and glucose moves via facilitated diffusion..
@Doorven - for growth and repair of tissues?
vince_24:
--- Quote from: Dooraven on November 17, 2009, 08:39:29 pm ---Yeah its 100% active transport. Since the arrows indicate which way the ion was moving. I screwed up the last question and I think I lost a mark where "why does the daughter cells have to be genetically identical". I said it prevents mutations but what else?
--- End quote ---
If you have the same organism, and your daughter cells are different. Your characteristics would change, right..?
kratos009:
I think for that genetically identical cells you just have to say that if genetically identical cells are not produced this would lead to mutation of the DNA, which may result in the formation of cancerous cells due to the mutated DNA. Thats what i put.. ;).
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