Author Topic: Biolgy paper 1 help!  (Read 28525 times)

Offline thukon

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Re: Biolgy paper 1 help!
« Reply #15 on: June 06, 2009, 06:04:40 am »
I got the sewage thing wrong for sure. I put B (lol) because I thought the fish get poisoned from the sewage or something.
What did you people put for the Monocot leaf? The answer was D (the one that was long and thin and had veins running the length of the leaf)

Offline john12345

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Re: Biolgy paper 1 help!
« Reply #16 on: June 06, 2009, 06:11:18 am »
hey can sum1 please tell me de answer for de glucose thing

wat is glucose carried in ??

was it arteries only??

Offline Friends

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Re: Biolgy paper 1 help!
« Reply #17 on: June 06, 2009, 06:13:09 am »
hey can sum1 please tell me de answer for de glucose thing

wat is glucose carried in ??

was it arteries only??
Nope. It is artery and veins both.

Offline vivek_metallica

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Re: Biolgy paper 1 help!
« Reply #18 on: June 06, 2009, 06:24:00 am »
what about question 29, the one about the yellow and purple genotypes, i put the answer as A but people are telling me its C, it has to be pp as it said one of the parent genotypes were yellow.. therefore, it cant be Pp x PP or PP x Pp
It also had to be in 3:1 ratio..
what about the others, how many marks do you think you're losing?

Offline thukon

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Re: Biolgy paper 1 help!
« Reply #19 on: June 06, 2009, 06:26:22 am »
hey can sum1 please tell me de answer for de glucose thing

wat is glucose carried in ??

was it arteries only??
Nope. It is artery and veins both.
yes!!! I put areteries and veins.

Im asking again, what did u ppl put for the monocot leaf? The answer is D, the long thin one.

@vivek. Its C. Since its a 3:1 ratio, Pp x Pp is the answer. The offspring will be PP, Pp, Pp, and pp, so 3 purple for 1 yellow. Simple.

Offline Friends

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Re: Biolgy paper 1 help!
« Reply #20 on: June 06, 2009, 06:27:05 am »
Answer of 29 was Pp x Pp
I think i am not losing any marks ;D ;D but not sure about 40 ??? ??? I wrote C.

Offline Friends

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Re: Biolgy paper 1 help!
« Reply #21 on: June 06, 2009, 06:29:07 am »
hey can sum1 please tell me de answer for de glucose thing

wat is glucose carried in ??

was it arteries only??
Nope. It is artery and veins both.
yes!!! I put areteries and veins.



Im asking again, what did u ppl put for the monocot leaf? The answer is D, the long thin one.

@vivek. Its C. Since its a 3:1 ratio, PP x Pp is the answer. The offspring will be PP, Pp, Pp, and pp, so 3 purple for 1 yellow. Simple.
Monocoat is D
And if PP X Pp is the answer u r wrong. Because offspring will be PP,PP,Pp and Pp

Therefor all purple. and No yellow.

nid404

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Re: Biolgy paper 1 help!
« Reply #22 on: June 06, 2009, 06:29:42 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
Sorry man I dont agree with U.
See when oxygen level decreases,the fishes starts to die.
 so the number of bacteria increase as they feed on dead fishes.
 as from first the oxygen is less they respire anaerobically. 

And how can dying of fish decrease oxygen level...???

oxygen levels don't just decrease..they decrease because bacteria respire and use them up. When sewage is added bacteria feed and multiply rapidly. And when the fishes die bacteria feed on them too(fishes r organic matter )...so the level decreases more. So when the levels decrease anaerobically respiring bacteria start to grow(cuz they don't need the oxygen).

Highest is oxygen
then        Algea
then        nitrates
then        suspended solids
then        sewage fungus

u have wrongly interpreted it.
i'll explain

Sewage is pumped at X, this causes rise in sewage fungus,suspended solids and nitrates...algae falls as oxygen level falls. Look at the lines properly. At Y sewage fungus also reduce as oxygen depletes, nitrates r used up along with the suspended solids(organic solids). When their number reduces,oxygen levels r restores and algae grows again. I hope uve got it.I'm saying this for ur good...so that u don't repeat ur mistake. If u don't understand it i will explain it again but if u still want to go ahead with ur interpretation i can't say anything.

GOOD LUCK!!!

Offline Friends

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Re: Biolgy paper 1 help!
« Reply #23 on: June 06, 2009, 06:32:05 am »
Ok i got it.
But anyone know all the options...??????

Offline thukon

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Re: Biolgy paper 1 help!
« Reply #24 on: June 06, 2009, 06:33:54 am »
hey can sum1 please tell me de answer for de glucose thing

wat is glucose carried in ??

was it arteries only??
Nope. It is artery and veins both.
yes!!! I put areteries and veins.



Im asking again, what did u ppl put for the monocot leaf? The answer is D, the long thin one.

@vivek. Its C. Since its a 3:1 ratio, PP x Pp is the answer. The offspring will be PP, Pp, Pp, and pp, so 3 purple for 1 yellow. Simple.
Monocoat is D
And if PP X Pp is the answer u r wrong. Because offspring will be PP,PP,Pp and Pp

Therefor all purple. and No yellow.
Yeah i mistyped. I edited the post. I meant Pp x Pp, or both heterozygous.

nid404

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Re: Biolgy paper 1 help!
« Reply #25 on: June 06, 2009, 06:34:29 am »
@friends:did u just -rep me.it's ok if u have but i wanna know cuz sanity_master said there's a problem with the rep system but others' rep seems to remain and mine seems to go down despite all the help i provide

heyy i don't remember the options in the order

but there was


bacteria increase
dissolved oxygen decreases
fishes die
anaerobic bacteria increase


Offline Friends

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Re: Biolgy paper 1 help!
« Reply #26 on: June 06, 2009, 06:36:17 am »
I didn't -rep U.
And i asking the answers.
like C WAS 2,1,4,3

Offline thukon

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Re: Biolgy paper 1 help!
« Reply #27 on: June 06, 2009, 06:40:39 am »
@friends:did u just -rep me.it's ok if u have but i wanna know cuz sanity_master said there's a problem with the rep system but others' rep seems to remain and mine seems to go down despite all the help i provide

heyy i don't remember the options in the order

but there was


bacteria increase
dissolved oxygen decreases
fishes die
anaerobic bacteria increase


You think YOU have a problem with rep?

nid404

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Re: Biolgy paper 1 help!
« Reply #28 on: June 06, 2009, 06:42:10 am »
@friends:did u just -rep me.it's ok if u have but i wanna know cuz sanity_master said there's a problem with the rep system but others' rep seems to remain and mine seems to go down despite all the help i provide

heyy i don't remember the options in the order

but there was


bacteria increase
dissolved oxygen decreases
fishes die
anaerobic bacteria increase


You think YOU have a problem with rep?


haha after looking at yours,definitely.

Offline thukon

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Re: Biolgy paper 1 help!
« Reply #29 on: June 06, 2009, 06:43:21 am »
@friends:did u just -rep me.it's ok if u have but i wanna know cuz sanity_master said there's a problem with the rep system but others' rep seems to remain and mine seems to go down despite all the help i provide

heyy i don't remember the options in the order

but there was


bacteria increase
dissolved oxygen decreases
fishes die
anaerobic bacteria increase


You think YOU have a problem with rep?


haha after looking at yours,definitely.
AHHH IT WENT DOWN AGAIN!!!!
Ok went back to normal...