Qualification > Sciences
IGCSE Biology Paper 3
Friends:
--- Quote from: nid404 on June 09, 2009, 05:39:38 am ---the water that the plants have taken up is not the only wet mass they have. The water has to be removed completely
--- End quote ---
Yeah I know.
But as they used the same raddish for 6weeks. We cannot dry it. So the Best option Would be what we wrote.
;D ;D ;D ;D ;D
aquarian93:
i jus sed withdraw/dehydrate the plant.
ws a hard question.
Mirzaa:
--- Quote from: annie_angel on June 09, 2009, 05:09:24 am ---yes its rong...u just put da bacteria in a fermentor;add feedstock;it respires and reproduces;and u get the product...it waz a repeated question...plz correct me if i m rong
--- End quote ---
NICE!! thats exactly what i put, wrote about the fermenter, but with much more detail :)
Mirzaa:
--- Quote from: thukon on June 09, 2009, 05:27:16 am ---Liver cells - Nucleus, Cytoplasm, and cell membrane. I hope.
Yeah, hepatic portal vein and ileum
dry mass, i put measure the amount of solution uptaken by the plants., and then subtract from original. I think its wrong.
--- End quote ---
yea thats wrond dude.... uve gotta bake the radish plant to find the dry mass..!
nid404:
--- Quote from: Friends on June 09, 2009, 05:41:48 am ---
--- Quote from: nid404 on June 09, 2009, 05:39:38 am ---the water that the plants have taken up is not the only wet mass they have. The water has to be removed completely
--- End quote ---
Yeah I know.
But as they used the same raddish for 6weeks. We cannot dry it. So the Best option Would be what we wrote.
;D ;D ;D ;D ;D
--- End quote ---
who said the radish used is the same for the weeks. It's not possible...and im sorry cuz to find out dry mass u need to kill the organism.
I'll put down exactly what the book says..take a look
Dry mass is often used as a measure of growth, because wet mass varies from day to day. The value for dry mass is obtained by drying out the organism in an oven, but this involves killing it.
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