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Mon 2 Oct, 2006 08:38 pm
Hi, Anyone knows the answer to this questions?
1) Solutions are always comprised of:
a)water and salts
b)solvents and solute
c)compounds and ions
d)liquids and solids
2)Plants get the nitrogen they need to build additional cells from:
a)directly from the nitrogen in the air
b)protein in the cells
c)ammonia or nitrate in the soil
d)denitrifying bacteria
3)Ammonia (NH3) is converted to nitrite (NO2) by:
a)nitrifying bacteria
b)decomposers
c)denitrifying bacteria
d)nitrogen-fixing bacteria
4)Phosphorus is needed by organisms for
a)bones
b)cell membranes
c)DNA
d)All of the above are correct.
I take any help you can give me. Thank you very much!!!!
Nattie,
It's not a good idea to ask other people to do your home-work. I'll help you with this, but only to a certain extent. So that, you "do" have to put in some effort on your part.
Out of the four availabe options, I'll discard two wrong ones and leave the other two- one wrong and one right. That will make your task easier.
1) a)water and salts
b)solvents and solutes (remember, one of them is true)
2) b)protein in the cells
c)ammonia or nitrate in the soil
3) a)nitrifying bacteria
d)nitrogen-fixing bacteria
4) I'll give the correct answer for this one. d) All of the above are correct.
Now, use your brain!
That last one is just silly. Most organisms don't have bones.
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