Qualification > Sciences
Biolgy paper 1 help!
dreams24:
isnt it 35/40 usually?
aquarian93:
--- Quote from: hdbkiwi on June 06, 2009, 09:45:48 am ---I liked the bio paper :) Hey for the genes thing
Meiosis was identical
mitosis was non-identical (nucleus now has haploid number of chromosomes)
right?
--- End quote ---
isnt it the other way around? meosis is haploid
girl_92:
--- Quote from: nid404 on June 06, 2009, 05:14:27 am ---it was D dude.
cause when sewage is added bacteria feed on the organic matter,using a lot of dissolved oxygen. When this happens fishes have less oxygen to thrive on(they die). When they die it depletes oxygen levels more....so bacteria which do not require oxygen(anaerobically respiring bacteria)will increase cuz they can survive without oxygen
--- End quote ---
exactly
GodOfWar:
ERMM.... im confused ??? :-[
I just want to clarify this whole aphid and phloem thing.
The question was : " Aphids feed on the contents of phloem. What do they lack in their diet ? "
And the choices were : A amino acids
B fats
C sucrose
D water
I thot that aphids were green plants that stuck to plants' stems, so they cud produce glucose but needed amino acids as they weren't able to absorb nitrate ions from soil [ we did a question like this once in some ppr 3 but i noe now they were NOT aphids ] so niways i had water and fats COMPLETELY ruled out.
SOOO help me out here.... most ppl here say fats . BUT HOW DO YOU KNOW APHIDS LACK FATS IN THEIR DIET?
Water is ruled out but it cud easily be amino acid and sugars? y fats?
P.S. i chose A.
hdbkiwi:
--- Quote from: aquarian93 on June 06, 2009, 09:48:13 am ---
--- Quote from: hdbkiwi on June 06, 2009, 09:45:48 am ---I liked the bio paper :) Hey for the genes thing
Meiosis was identical
mitosis was non-identical (nucleus now has haploid number of chromosomes)
right?
--- End quote ---
isnt it the other way around? meosis is haploid
--- End quote ---
argh haha yeah so Mitosis is identical
Meiosis is haploid-messed that one up ah well :)
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