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Author Topic: IGCSE BIOLOGY DOUBTS HERE !!!!  (Read 30875 times)

Offline Arthur Bon Zavi

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #90 on: May 24, 2011, 07:04:28 am »
Quote from: Amelia on May 23, 2011, 06:08:47 pm
LOL. We've a new Mod, here.  :P

Who ? Okay, continue.
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Offline ~ Miss Relina ~

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #91 on: April 11, 2012, 04:34:33 pm »
the syllabus mentions this point 2.1 which I would like to know about it :
          
 
 Know that here are other classification
                                      systems e.g. cladistics (based on RNA/
                                      DNA sequencing data)
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Offline NotAbod

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #92 on: April 11, 2012, 10:15:23 pm »
Quote from: ~ Miss Relina ~ on April 11, 2012, 04:34:33 pm
the syllabus mentions this point 2.1 which I would like to know about it :
          
 
 Know that here are other classification
                                      systems e.g. cladistics (based on RNA/
                                      DNA sequencing data)
Only 2 naming systems in IGCSE you have to know
1- Binomial nomenclature
2- cladistics

I'll assume you know what binomial nomenclature is.
and about cladistics, for IGCSE you only have to know the name (cladistics) and that it is based on DNA and RNA sequencing.
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Offline ~ Miss Relina ~

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #93 on: April 13, 2012, 11:08:59 am »
Quote from: Abod on April 11, 2012, 10:15:23 pm
Only 2 naming systems in IGCSE you have to know
1- Binomial nomenclature
2- cladistics

I'll assume you know what binomial nomenclature is.
and about cladistics, for IGCSE you only have to know the name (cladistics) and that it is based on DNA and RNA sequencing.
so you're sure ,right ??
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Offline NotAbod

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #94 on: April 13, 2012, 11:13:20 am »
Yes, that's what I've studied.

plus the point from the syllabus says that you only have to know that there are other naming systems.
here are 2 questions as an example:
 i-Name any system of classification other than binomial nomenclature. (cladistics)
ii- what does the system you've mentioned in (i) use for classifying species. (dna and rna)
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Offline ~ Miss Relina ~

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #95 on: April 13, 2012, 11:19:43 am »
Quote from: Abod on April 13, 2012, 11:13:20 am
Yes, that's what I've studied.

plus the point from the syllabus says that you only have to know that there are other naming systems.
here are 2 questions as an example:
 i-Name any system of classification other than binomial nomenclature. (cladistics)
ii- what does the system you've mentioned in (i) use for classifying species. (dna and rna)
can't also fossil fuels be a classifying tool
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Offline NotAbod

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #96 on: April 13, 2012, 11:24:38 am »
I'm not sure from that.
any articles about it?
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Offline ~ Miss Relina ~

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #97 on: April 13, 2012, 11:36:38 am »
Quote from: Abod on April 13, 2012, 11:24:38 am
I'm not sure from that.
any articles about it?

no but wikipedia I think
 Cladistics there is really  really HARD  ???

and I thought that the syllabus mentioned cladistics as an example so there may be others that's why I 'm worried  :-\
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Offline NotAbod

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #98 on: April 13, 2012, 11:41:17 am »
Cladistics is hard, but you don't need to know much about it. :)
Don't worry, these 2 are enough :D
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Offline ~ Miss Relina ~

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #99 on: April 13, 2012, 11:47:57 am »
Quote from: Abod on April 13, 2012, 11:41:17 am
Cladistics is hard, but you don't need to know much about it. :)
Don't worry, these 2 are enough :D

look at this website I am not sure about the fossils matter,though .
http://www.infoplease.com/cig/biology/alternative-methods-classification.html
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Offline NotAbod

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #100 on: April 13, 2012, 12:06:37 pm »
read it.

and do you mean:

Quote from: ~ Miss Relina ~ on April 13, 2012, 11:19:43 am
can't also fossil fuels be a classifying tool

or

Quote from: ~ Miss Relina ~ on April 13, 2012, 11:47:57 am
I am not sure about the fossils matter,though .


fossils or fossil fuels?
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Offline ~ Miss Relina ~

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #101 on: April 13, 2012, 02:02:17 pm »
Quote from: Abod on April 13, 2012, 12:06:37 pm
read it.

and do you mean:

or


fossils or fossil fuels?

foosils i'm really sorry

so do you think that link was  okay ??????????
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Offline NotAbod

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #102 on: April 13, 2012, 02:22:45 pm »
fossils can be used in binomial nomenclature, but that's too much detail.
I will say it again, you don't need to know much details about classification.
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Offline Steveyg777

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #103 on: April 14, 2012, 11:21:43 am »
Hi all, I got told by a physics teacher that following the specification of any of the sciences doesnt mean anything, he claims the questions are completely different and what I should do is look at the mark schemes.
I have been pondering what is the best possible way to revise all three triple sciences. Can anyone offer any tips on HOW to memorize key points and actually Learn and Remember them? I have tried really hard summarizing notes from my revision guide, and attempted past paper questions, marking any mistakes that I made, but remembering these mistakes as well as understanding it is the problem, it just doesn't stick! I don't feel like I have made enough progress and my exams are looming. The bio specification looks so long, do we have to know everything? What's the most beneficial way of revising bio?
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Offline MalloryKnox

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Re: IGCSE BIOLOGY DOUBTS HERE !!!!
« Reply #104 on: October 02, 2012, 02:11:22 pm »
Hi
I came across a question in a past biology theory paper today;

'State how many times a red blood cell must pass through the heart when it travels from the lungs and returns to the lungs'

and also:

'At high altitudes there is less oxygen in the air than at sea level.
Suggest how this might affect the uptake of oxygen in the alveoli'

Thanks :DDD
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