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Author Topic: Biology Paper 1 and 3 help HERE ONLY!!!  (Read 46879 times)

Offline Aodian

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #225 on: June 06, 2009, 11:27:20 am »
Quote from: kam on June 06, 2009, 11:22:14 am
Quote from: Aodian on June 06, 2009, 11:20:14 am
Quote from: goin4dakill on June 06, 2009, 10:52:51 am
Also what is Zona Pellucida (reproduction)

Sorry, im being a pain.
And lets have some predictions..
there was hardly anything on plants, digestion, genes (not much), reproduction, generally not much on humans, nutrition etc..
what else
do we have to learn zona pellucida.. i've never come across it in any of the papers or the syllabus.. but here's the definition anyways..

Zona pellucida: The strong membrane that forms around an ovum as it develops in the ovary. The membrane remains in place during the egg's travels through the  Fallopian tube. To fertilize the egg, a sperm must penetrate the thinning zona pellucida. If fertilization takes place, the membrane disappears to permit implantation in the uterus.


what the hell
we dont need to know that
do we?

hmm i doubt it but still you never know.. tats why jsut stick to what the syllabus needs you to know and you'll be fine.. syllabus literally tells u wat answers u need for the exams..
Gudluck!
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Offline Kim

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #226 on: June 06, 2009, 11:36:41 am »
Quote from: kam on June 06, 2009, 11:22:14 am
Quote from: Aodian on June 06, 2009, 11:20:14 am
Quote from: goin4dakill on June 06, 2009, 10:52:51 am
Also what is Zona Pellucida (reproduction)

Sorry, im being a pain.
And lets have some predictions..
there was hardly anything on plants, digestion, genes (not much), reproduction, generally not much on humans, nutrition etc..
what else
do we have to learn zona pellucida.. i've never come across it in any of the papers or the syllabus.. but here's the definition anyways..

Zona pellucida: The strong membrane that forms around an ovum as it develops in the ovary. The membrane remains in place during the egg's travels through the  Fallopian tube. To fertilize the egg, a sperm must penetrate the thinning zona pellucida. If fertilization takes place, the membrane disappears to permit implantation in the uterus.


what the hell
we dont need to know that
do we?
well u do need to know wat zona pellucida is
its just the outer most layer of the egg it is jelly like.
thats all
no details
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Offline SGVaibhav

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #227 on: June 06, 2009, 01:36:03 pm »
Which one is xylem and which one is phloem?
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nid404

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #228 on: June 06, 2009, 01:49:17 pm »
Quote from: sgvaibhav on June 06, 2009, 01:36:03 pm
Which one is xylem and which one is phloem?

the one with the thick black border is the xylem and the other one is the phloem always
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Offline Steve13

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #229 on: June 06, 2009, 01:57:33 pm »
Quote from: sgvaibhav on June 06, 2009, 01:36:03 pm
Which one is xylem and which one is phloem?

always remember xylem has a thicker wall ..in the diagram with border
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Offline 247sports

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #230 on: June 06, 2009, 02:20:43 pm »
Quote from: kam on June 05, 2009, 10:46:31 pm
im going to england
yes is it nice over there?

england is a beutifull country  :)
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Offline sweetsh

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #231 on: June 06, 2009, 02:23:58 pm »
Oh England! Amazing!
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Offline 247sports

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #232 on: June 06, 2009, 02:26:18 pm »
hahaha we get distractd so easily  ;)
just 3 mre xmz to go <3
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nid404

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #233 on: June 06, 2009, 02:27:42 pm »
Quote from: 247sports on June 06, 2009, 02:26:18 pm
hahaha we get distractd so easily  ;)
just 3 mre xmz to go <3

2.....for my 600th post
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Offline 247sports

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #234 on: June 06, 2009, 02:31:47 pm »
Quote from: nid404 on June 06, 2009, 02:27:42 pm
Quote from: 247sports on June 06, 2009, 02:26:18 pm
hahaha we get distractd so easily  ;)
just 3 mre xmz to go <3

2.....for my 600th post
wow 600 awsm  ;)
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Offline Ukhti-R

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #235 on: June 06, 2009, 02:49:24 pm »
nid... we must have a party for you then.. go to Chit chat .. in the Partyyy thread and we'll party at 10 00 lol. there are oredy 4 other parties

loool..! ;D ;D
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Offline Fatema

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #236 on: June 06, 2009, 04:38:59 pm »
Quote from: IGStudent09 on June 03, 2009, 09:19:10 pm
Hey there everyone please post your questions and ill be more than happy to answer any. :)

If you need notes there are 3 on different topics on page 2 and if you need more just email me and i'll send you more. Gd luck
\\

hey Thanks can u email me URGENT URGENT URGENT all the notes if u hv wich cover every bit of the syllabus or even watevr other resources u hv for Biology paper 3 hv my exm on mon my email ID is cool_kassam@yahoo.co.uk
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Offline 247sports

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #237 on: June 06, 2009, 05:15:18 pm »
hey
cud any1 explain how a potometer and a kidney dailysis machine
works
Thanks
it will b a big  help if sum1 answers this
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Offline hmh

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #238 on: June 06, 2009, 05:25:37 pm »
Quote from: 247sports on June 06, 2009, 05:15:18 pm
hey
cud any1 explain how a potometer and a kidney dailysis machine
works
Thanks
it will b a big  help if sum1 answers this


Kidney Dailysis machine :

1. Dialysis is needed when both kidneys fail
2. it involves filtering of blood using a dailysis machine
3. the machine is connected up to a vein in the patients arm
4. the blood then passes through tube in the machine
5.urea and waste products: diffuse out and filtered blood returns to the arms
6. sugar and ions do not diffuse out of the blood into dailysis fuild.

Potometer:

It is designed to measure the rate of uptake of water in a cut shoot.

1. Set up the conditions of the experiment. Alterations to lighting (placing the plant in bright light or shadow), wind (directing a fan at the plant), and humidity (placing the plant in a humid chamber) are typical.
2. Let the bubble reach a "zero" point in the tube.
3. Measure the movement of the bubble at regular intervals and record the results.

Hope tht help :)
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Offline Mastermind

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Re: Biology Paper 1 and 3 help HERE ONLY!!!
« Reply #239 on: June 06, 2009, 05:28:22 pm »
Is Potometer in the Syllubus ?
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