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Biology Paper 1 and 3 help HERE ONLY!!!

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IGStudent09:
Organisms in their environment notes

MIU:
cud some1 plz send me the oct/nov 2008 physics p1 + ms because its not downloading from freeexampapers. my email is mu_1031@hotmail.com. il realy appreciate.

nid404:
attached

Coco:

--- Quote from: kim on June 04, 2009, 03:19:14 pm ---
--- Quote from: kim on June 04, 2009, 03:11:41 pm ---cud sum1 explain  the nitrifying denitrifying nitrogen fixing bacteria?
wat does the nucleus in every body cell of a male contain?
X allele
y allele
y chromosome
y gene

--- End quote ---
would sum1 please answer me?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! >:(

--- End quote ---

Nitrifying bacteria converts the nitrogen in the air (in the soil) in to nitrate ions which is a source of protiens for plants.
Denitrifying bacteria converts these nitrate ions back into nitrogen and releases it in the air.

Y allele

kam:

--- Quote from: Coco on June 04, 2009, 04:50:11 pm ---
--- Quote from: kim on June 04, 2009, 03:19:14 pm ---
--- Quote from: kim on June 04, 2009, 03:11:41 pm ---cud sum1 explain  the nitrifying denitrifying nitrogen fixing bacteria?
wat does the nucleus in every body cell of a male contain?
X allele
y allele
y chromosome
y gene

--- End quote ---
would sum1 please answer me?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! >:(

--- End quote ---

Nitrifying bacteria converts the nitrogen in the air (in the soil) in to nitrate ions which is a source of protiens for plants.
Denitrifying bacteria converts these nitrate ions back into nitrogen and releases it in the air.

Y allele

--- End quote ---

nope not Y allele
its y chromosome


wahab answered tht By the way

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