« previous next »
Pages: 1 ... 4 5 [6] 7 8 9   Go Down

Author Topic: [IMPORTANT]20/5/2010 Biology Paper 6  (Read 19244 times)

Offline Shazizzzle

  • SF Citizen
  • ***
  • Posts: 204
  • Reputation: 1444
  • Gender: Male
Re: 20/5/2010 Biology Paper 6
« Reply #75 on: May 19, 2010, 09:29:03 pm »
Quote from: Baladya on May 19, 2010, 09:25:39 pm
ofc towards. Positive means towards ( warever that is)

Yeah. Just confirming. because one of my friends confused me. :S
Logged
•$#@2™•

Offline Burhan.arshad

  • Newbie
  • *
  • Posts: 31
  • Reputation: 45
  • Gender: Male
Re: 20/5/2010 Biology Paper 6
« Reply #76 on: May 19, 2010, 09:50:21 pm »
do we have to make a best fit curve or joint line by ruler point to point?
Logged
I hAve sEEn mAny prEty wOmEns bUt nO prEfEct OnEs

Offline Ivo

  • SF Geek
  • ****
  • Posts: 515
  • Reputation: 2767
Re: 20/5/2010 Biology Paper 6
« Reply #77 on: May 19, 2010, 09:51:43 pm »
For Q.3) b) (Attached photo):

Why is green dominant and white recessive?
Logged
Always willing to help!  8)
"In helping others, we shall help ourselves, for whatever good we give out completes the circle and comes back to us."

Offline Ivo

  • SF Geek
  • ****
  • Posts: 515
  • Reputation: 2767
Re: 20/5/2010 Biology Paper 6
« Reply #78 on: May 19, 2010, 09:52:07 pm »
Quote from: Burhan.arshad on May 19, 2010, 09:50:21 pm
do we have to make a best fit curve or joint line by ruler point to point?

Any is fine.  You'll get credit for either.
Logged
Always willing to help!  8)
"In helping others, we shall help ourselves, for whatever good we give out completes the circle and comes back to us."

Offline Shazizzzle

  • SF Citizen
  • ***
  • Posts: 204
  • Reputation: 1444
  • Gender: Male
Re: 20/5/2010 Biology Paper 6
« Reply #79 on: May 19, 2010, 09:54:23 pm »
Quote from: Ivo on May 19, 2010, 09:51:43 pm
For Q.3) b) (Attached photo):

Why is green dominant and white recessive?

There are clearly more green than white, proving that green was dominant, and by being so, produced more green than white.
As all conditions, homozygous dominant, or hetrozygous, will have green. so that's majority. Only homozygous recessive will have the white phenotype. So green is more!!
Logged
•$#@2™•

Offline zioziozio

  • The Silent Mind
  • Newbie
  • *
  • Posts: 28
  • Reputation: 42
  • Gender: Male
Re: 20/5/2010 Biology Paper 6
« Reply #80 on: May 19, 2010, 09:54:57 pm »
Quote from: zioziozio on May 19, 2010, 08:03:29 pm
hey guys what's the bubble experiment ?? .. please help


neone ppl ?
Logged
We can learn from the past .. But those days are gone .. We can look for the future .. But there may not be one ...

Offline Burhan.arshad

  • Newbie
  • *
  • Posts: 31
  • Reputation: 45
  • Gender: Male
Re: 20/5/2010 Biology Paper 6
« Reply #81 on: May 19, 2010, 09:56:48 pm »
Quote from: Ivo on May 19, 2010, 09:52:07 pm
Any is fine.  You'll get credit for either.

r u sure that both r right.....because smebody told me tht only best fit corve is creditted
Logged
I hAve sEEn mAny prEty wOmEns bUt nO prEfEct OnEs

Offline Ivo

  • SF Geek
  • ****
  • Posts: 515
  • Reputation: 2767
Re: 20/5/2010 Biology Paper 6
« Reply #82 on: May 19, 2010, 09:59:12 pm »
Quote from: Burhan.arshad on May 19, 2010, 09:56:48 pm
r u sure that both r right.....because smebody told me tht only best fit corve is creditted

No joining dot to dot is also fine.  Look in the mark schemes, especially the Winter 09 ones :)
Logged
Always willing to help!  8)
"In helping others, we shall help ourselves, for whatever good we give out completes the circle and comes back to us."

Offline Ivo

  • SF Geek
  • ****
  • Posts: 515
  • Reputation: 2767
Re: 20/5/2010 Biology Paper 6
« Reply #83 on: May 19, 2010, 10:00:29 pm »
Quote from: Shazizzzle on May 19, 2010, 09:54:23 pm
There are clearly more green than white, proving that green was dominant, and by being so, produced more green than white.
As all conditions, homozygous dominant, or hetrozygous, will have green. so that's majority. Only homozygous recessive will have the white phenotype. So green is more!!

Oh I see, and 3:1 ratio of offspring is only because of heterozygous parent genotypes right?
Logged
Always willing to help!  8)
"In helping others, we shall help ourselves, for whatever good we give out completes the circle and comes back to us."

Offline Ivo

  • SF Geek
  • ****
  • Posts: 515
  • Reputation: 2767
Re: 20/5/2010 Biology Paper 6
« Reply #84 on: May 19, 2010, 10:05:06 pm »
In the mark scheme it says method of measuring uptake is bubble method.

What is this?
« Last Edit: May 19, 2010, 10:06:54 pm by Ivo »
Logged
Always willing to help!  8)
"In helping others, we shall help ourselves, for whatever good we give out completes the circle and comes back to us."

Offline NidZ- Hero

  • People say i m borderline crazy Sorta kinda :D
  • SF Senior Citizen
  • *****
  • Posts: 958
  • Reputation: 21263
  • Gender: Female
  • IDK what makes u such a LOSER.But it really works
Re: 20/5/2010 Biology Paper 6
« Reply #85 on: May 19, 2010, 10:06:35 pm »
Quote from: Shazizzzle on May 19, 2010, 09:12:28 pm
Umm, in maggots (no, not you guys. :P That would be faggots XD ;) ), is positive phototaxis TOWARDS light or away from it?
taxes is nt dere in 2010 syallabus its out
Logged

Offline Ivo

  • SF Geek
  • ****
  • Posts: 515
  • Reputation: 2767
Re: 20/5/2010 Biology Paper 6
« Reply #86 on: May 19, 2010, 10:07:32 pm »
For M/J/08 Paper 6, Q.3)b)i):

How do we measure the distance grown (mm) accurately from the diagram.  The pollen tube is not a straight line so how do we measure it?

Q.3)a)ii)

Where is the micropyle?  Is it the whole in between C at the right-hand side?  The big hole?

Which colour is correct?

Guys see the link below.  This is such a hard question!

https://studentforums.biz/index.php/topic,7969.msg211375.html#msg211375
« Last Edit: May 19, 2010, 10:09:07 pm by Ivo »
Logged
Always willing to help!  8)
"In helping others, we shall help ourselves, for whatever good we give out completes the circle and comes back to us."

Offline Ivo

  • SF Geek
  • ****
  • Posts: 515
  • Reputation: 2767
Re: 20/5/2010 Biology Paper 6
« Reply #87 on: May 19, 2010, 10:07:58 pm »
Quote from: Nidzzz on May 19, 2010, 10:06:35 pm
taxes is nt dere in 2010 syallabus its out

Tropism is isn't it?
Logged
Always willing to help!  8)
"In helping others, we shall help ourselves, for whatever good we give out completes the circle and comes back to us."

Offline NidZ- Hero

  • People say i m borderline crazy Sorta kinda :D
  • SF Senior Citizen
  • *****
  • Posts: 958
  • Reputation: 21263
  • Gender: Female
  • IDK what makes u such a LOSER.But it really works
Re: 20/5/2010 Biology Paper 6
« Reply #88 on: May 19, 2010, 10:13:33 pm »
Quote from: Ivo on May 19, 2010, 10:07:58 pm
Tropism is isn't it?
tropism is for plants which is dere and taxes is for simple invertebrates which not dere in 2010 igcse bio : :)
Logged

Offline haris94

  • SF Senior Citizen
  • *****
  • Posts: 930
  • Reputation: 984
  • Gender: Male
Re: 20/5/2010 Biology Paper 6
« Reply #89 on: May 19, 2010, 10:27:07 pm »
really?  :o
r u absolutely sure?  ::)
Logged
WHAT WE DO IN LIFE ECHOES AN ETERNITY
Pages: 1 ... 4 5 [6] 7 8 9   Go Up
« previous next »