« previous next »
Pages: 1 ... 204 205 [206] 207 208 ... 227   Go Down

Author Topic: CHEM AND BIO HELP AND TIPS HERE  (Read 356954 times)

Offline mdwael

  • SF Immigrant
  • **
  • Posts: 115
  • Reputation: 144
  • Gender: Male
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3075 on: June 07, 2010, 04:05:17 pm »
Quote from: aangel42 on June 07, 2010, 03:57:22 pm
I think I can understand what zarkajordan was thinking... Like if the decomposers breaking down the dead organism, nitrogen is released, but that doesn't enter the ATMOSPHERE, right? It enters the soil? Or the decomposer just eats up the nitrogen or something?
Or is decomposing just a type of food intake and it's breaking that down (like we break down carbs to glucose) for its energy so it's using up the nitrogen and other compounds making up the body of the organism, and releasing CO2 and H20?

Sometimes answers may be all correct, but you should choose the closest one and apparently Water and CO2 are always the products from decomposing. And since they mentioned atmosphere, that means nitrogen isnt there cuz ammonium and nitrates form in the soil by some decomposing bacteria.
Logged
"We all want to be different, which makes us all the same"

Offline The InViSiBlE GIrl (Eva)

  • SF Master
  • ******
  • Posts: 1361
  • Reputation: 13232
  • Gender: Female
  • YOU'RE NOBODY UNTIL YOU'RE TALKED ABOUT!! XOXO
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3076 on: June 07, 2010, 04:09:15 pm »
Hey guys is it possible if someone could paste a link of the copy for OCT/NOV 2009 PPR 1 pls!!!!!!! its not opening in FRee exams and even in extreme papers.com
Plssss help
Logged
LiFe Is NoT tHe MeAsUrE oF tHe NuMbEr Of BrEaDtHs We TaKe, BuT rAtHeR oF tHe MoMeNtS tHaT tOoK oUr BrEaDtHs AwAy <3 LIFE :-D

Offline Vin

  • SF V.I.P
  • ********
  • Posts: 7914
  • Reputation: 52609
  • Gender: Male
    • Theory of Life - A new skew.
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3077 on: June 07, 2010, 04:09:40 pm »
Quote from: Raywin on June 07, 2010, 03:58:40 pm
I found these hard Qs posted by some guy on SF.. :S i tried them out, prolly some REALY OLD PAPERS. there was NO ms.. :|

Why isn't it A? Now I think its A. Its has to be..
Logged

Offline Raywin

  • SF Geek
  • ****
  • Posts: 393
  • Reputation: 409
  • Gender: Male
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3078 on: June 07, 2010, 04:10:43 pm »
Quote from: aangel42 on June 07, 2010, 04:07:28 pm
Two samples of a human enzyme were used in an experiment. Before they were used
           • sample X was heated to 80 C and then cooled to 37 C
           • sample Y was cooled to 0 C and then heated to 37 C.
How will this affect their activity?

A Sample X and sample Y are no longer active.
B Sample X and sample Y will be equally active.
C Sample X will be more active than sample Y.
D Sample Y will be more active than sample X.

Answer, please, and why?

D. This is because if sample X has been heated to 80*c, it would have denatured, it is useless. It wont be active. But, sample Y, however is cooled to 0*c, this doesnt denature it, only slows it. Thus, when heated back to 37*c, it will be more active. So the ans is D. :)
[/quote]
« Last Edit: June 07, 2010, 04:13:30 pm by Raywin »
Logged
;D

Offline Vin

  • SF V.I.P
  • ********
  • Posts: 7914
  • Reputation: 52609
  • Gender: Male
    • Theory of Life - A new skew.
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3079 on: June 07, 2010, 04:11:18 pm »
Quote from: Dizzy on June 07, 2010, 04:09:15 pm
Hey guys is it possible if someone could paste a link of the copy for OCT/NOV 2009 PPR 1 pls!!!!!!! its not opening in FRee exams and even in extreme papers.com
Plssss help

https://studentforums.biz/index.php/topic,54.msg231725.html#msg231725
Logged

Offline Raywin

  • SF Geek
  • ****
  • Posts: 393
  • Reputation: 409
  • Gender: Male
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3080 on: June 07, 2010, 04:12:43 pm »
Quote from: aangel42 on June 07, 2010, 04:11:11 pm
That's what I was thinking at first too, but that's not tricky, lol, so maybe that's not right.
Raywin, maybe you should PM the guy who posted them or something, that way he'll get an alert and send you the answers? lol

He was a guest, i dont think hell be there.. :'(

:D
Logged
;D

Offline mdwael

  • SF Immigrant
  • **
  • Posts: 115
  • Reputation: 144
  • Gender: Male
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3081 on: June 07, 2010, 04:13:30 pm »
Quote from: aangel42 on June 07, 2010, 04:07:28 pm
Two samples of a human enzyme were used in an experiment. Before they were used
           • sample X was heated to 80 C and then cooled to 37 C
           • sample Y was cooled to 0 C and then heated to 37 C.
How will this affect their activity?

A Sample X and sample Y are no longer active.
B Sample X and sample Y will be equally active.
C Sample X will be more active than sample Y.
D Sample Y will be more active than sample X.

Answer, please, and why?


Answer is D ofcourse cuz x was heated to 80 degrees so it got denatured, Y jkst got cooled, that doesnt damage it it just makes it temporarly inactive and when its heated to 37 degrees it becomes active
Logged
"We all want to be different, which makes us all the same"

Offline Vin

  • SF V.I.P
  • ********
  • Posts: 7914
  • Reputation: 52609
  • Gender: Male
    • Theory of Life - A new skew.
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3082 on: June 07, 2010, 04:13:35 pm »
Quote from: aangel42 on June 07, 2010, 04:11:11 pm
That's what I was thinking at first too, but that's not tricky, lol, so maybe that's not right.
Raywin, maybe you should PM the guy who posted them or something, that way he'll get an alert and send you the answers? lol

So what it ain't tricky.. Vasoconstriction is the decrease in diameter right? So y not straight forward A BOTH DECREASE ..?
Logged

Offline Raywin

  • SF Geek
  • ****
  • Posts: 393
  • Reputation: 409
  • Gender: Male
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3083 on: June 07, 2010, 04:15:53 pm »
Quote from: ~VIN1094~ on June 07, 2010, 04:13:35 pm
So what it ain't tricky.. Vasoconstriction is the decrease in diameter right? So y not straight forward A BOTH DECREASE ..?

Hmmm, yeah i guess.. :/ i have neva craved this much for a MS.. :P
Logged
;D

Offline Raywin

  • SF Geek
  • ****
  • Posts: 393
  • Reputation: 409
  • Gender: Male
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3084 on: June 07, 2010, 04:16:20 pm »
Logged
;D

Offline Raywin

  • SF Geek
  • ****
  • Posts: 393
  • Reputation: 409
  • Gender: Male
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3085 on: June 07, 2010, 04:17:52 pm »
Quote from: aangel42 on June 07, 2010, 04:17:13 pm
true... it's possible...
what about raywin's other question? that's bugging me too now

Buckle up guys, more coming.. :'(
Logged
;D

Offline Raywin

  • SF Geek
  • ****
  • Posts: 393
  • Reputation: 409
  • Gender: Male
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3086 on: June 07, 2010, 04:19:19 pm »
This one  >:(
:)
Logged
;D

Offline Weaam

  • Mad Alice
  • SF Geek
  • ****
  • Posts: 411
  • Reputation: 2264
  • Gender: Female
  • What if I spoke alien, fluently? O.o
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3087 on: June 07, 2010, 04:23:05 pm »
Ello ^^
If there is no trouble, can anyone plaese answer this --> M/J 06 Qs 29, 35, 37 Paper 1.
Thank youu.  ;D
Logged
- The man who smiles when things go wrong has thought of someone to blame it on. - Robert Bloch.
-I saw weird stuff in that place last night. Weird, strange, sick, twisted, eerie, godless, evil stuff... and I went in. - Homer
+ Rep me if i have been of any assistance to you ;D

Offline The Golden Girl =D

  • Without Allah I'm nothing <3
  • Honorary Member
  • SF Overlord
  • *****
  • Posts: 13757
  • Reputation: 65532
  • Ain't Nothin worth your tears =D
    • www.thegoldengirl157.blogspot.com
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3088 on: June 07, 2010, 04:26:32 pm »
Quote from: Raywin on June 07, 2010, 04:19:19 pm
This one  >:(
:)

i believe it is C , well it's cuz after the person stops , ur depth of breathing is still deep cuz u have oxygen debt

got it ?
Logged
Verily, in the remembrance of Allah do hearts find rest(13:28)

Please, Don't forget to Include GG in your Prayers =D

Offline The InViSiBlE GIrl (Eva)

  • SF Master
  • ******
  • Posts: 1361
  • Reputation: 13232
  • Gender: Female
  • YOU'RE NOBODY UNTIL YOU'RE TALKED ABOUT!! XOXO
Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #3089 on: June 07, 2010, 04:28:09 pm »
I believe its C too!!!
Quote from: Raywin on June 07, 2010, 04:19:19 pm
This one  >:(
:)
Logged
LiFe Is NoT tHe MeAsUrE oF tHe NuMbEr Of BrEaDtHs We TaKe, BuT rAtHeR oF tHe MoMeNtS tHaT tOoK oUr BrEaDtHs AwAy <3 LIFE :-D
Pages: 1 ... 204 205 [206] 207 208 ... 227   Go Up
« previous next »