IGCSE/GCSE/O & A Level/IB/University Student Forum
Qualification => Reference Material => GCE AS & A2 Level => Revison Notes => Topic started by: T.Q on November 11, 2009, 09:34:32 pm
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i need these experiments for the Edexcel AS Biology unit 1
1.Describe how the effect of caffeine on heart rate in Daphnia can be investigated practically, and discuss whether there are ethical issues in the use of invertebrates.
2.Describe how to investigate the vitamin C content of food and drink.
3.Describe how membrane structure can be investigated practically, eg by the effect of alcohol concentration or temperature on membrane permeability.
4.Describe how enzyme concentrations can affect the rates of reactions and how this can be investigated practically by measuring the initial rate of reaction.
plz anybody help
thanx in advance :)
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have u carried out these experiments in school?
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i have found the first experiment
help me with the others plz
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more expermints
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more expermints
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more expermints
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more expermints
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THANK YOU Flufferz Rawrr
she is the one who sent me these expermints
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Anytime
Root tip squash experiment
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thanks loads!! ;D
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please I need these experiment for edexcel A2 Biology
1. Describe how to carry out a study on the ecology of a habitat to produce valid and reliable data(including the use of quadrats and transects to assess abundance and distribution of organisms and the measurement of abiotic factors, eg solar energy input, climate, topography, oxygen avaliability and edaphic factors.
2. Describe how to investigate the effects of temperature on the development of organisms( eg seedling growth rate, brine shrimp hatch rates)
3. Describe how DNA can be amplified using the polymerase chain reaction(PCR).
4. Describe how gel electrophoresis can be used to separate DNA fragments of different length.
5. Describe how to investigate the effect of different antibiotics on bacteria.
6. Describe how to investigate rate of respiration practically.
7. Describe how to investigate the effects of excercise on tidal volume and breathing rate using data from spirometer traces.
8. Describe how to investigate habituation to a stimulus.
Thanks a lot.
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hey thanks guys! :) (though im doing CIE)
Umm, there's a book I have.. it's called biology a level experiments.. i will try to find the e-version of it; (if there is one).
also, go to the biology links topic and look at the thinkwell vids, nice help.
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hey thanks guys! :) (though im doing CIE)
Umm, there's a book I have.. it's called biology a level experiments.. i will try to find the e-version of it; (if there is one).
also, go to the biology links topic and look at the thinkwell vids, nice help.
Hey... i was searching that for a frnd too..
I found one..
here's the link ... : http://www.scribd.com/doc/6468336/Teaching-AS-Biology-Practical-Skills
Go from down up.. there's lots of unnecessary instructions at the start...
But its not the one i had.. mine was different and better... :-\ :-\ cant find it anywhere...
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Hey... i was searching that for a frnd too..
I found one..
here's the link ... : http://www.scribd.com/doc/6468336/Teaching-AS-Biology-Practical-Skills
Go from down up.. there's lots of unnecessary instructions at the start...
But its not the one i had.. mine was different and better... :-\ :-\ cant find it anywhere...
oh hey, this isn't bad.. thanks for the share! However, I have a black cover one and it's way way different/better. I'm still looking myself.. but hey guys try these:
http://www.practicalbiology.org - not bad.
e.g. http://www.practicalbiology.org/areas/introductory/cells-to-systems/microscopic-organisms/observing-protoctista-in-water-using-the-hanging-drop-technique,93,EXP.html
http://www.courseworkbank.co.uk/AS__A2_and_A-Level/Biology/
http://www.courseworkbank.co.uk/AS__A2_and_A-Level/Biology/Experiments/
pz
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oh hey, this isn't bad.. thanks for the share! However, I have a black cover one and it's way way different/better. I'm still looking myself.. but hey guys try these:
http://www.practicalbiology.org - not bad.
e.g. http://www.practicalbiology.org/areas/introductory/cells-to-systems/microscopic-organisms/observing-protoctista-in-water-using-the-hanging-drop-technique,93,EXP.html
http://www.courseworkbank.co.uk/AS__A2_and_A-Level/Biology/
http://www.courseworkbank.co.uk/AS__A2_and_A-Level/Biology/Experiments/
pz
I'd told you this one was different..
I wish i hadnt deleted all those files i had.. :-\ :-\
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thank u guys!!
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thanks
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thanks to everyone
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:D
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hey thx guys
By the way do you have the experiment to investigate plant mineral deficiencies?
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hey thx guys
By the way do you have the experiment to investigate plant mineral deficiencies?
check this https://studentforums.biz/index.php/topic,7364.0.html (https://studentforums.biz/index.php/topic,7364.0.html)
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please I need these experiment for edexcel A2 Biology
1. Describe how to carry out a study on the ecology of a habitat to produce valid and reliable data(including the use of quadrats and transects to assess abundance and distribution of organisms and the measurement of abiotic factors, eg solar energy input, climate, topography, oxygen avaliability and edaphic factors.
2. Describe how to investigate the effects of temperature on the development of organisms( eg seedling growth rate, brine shrimp hatch rates)
3. Describe how DNA can be amplified using the polymerase chain reaction(PCR).
4. Describe how gel electrophoresis can be used to separate DNA fragments of different length.
5. Describe how to investigate the effect of different antibiotics on bacteria.
6. Describe how to investigate rate of respiration practically.
7. Describe how to investigate the effects of excercise on tidal volume and breathing rate using data from spirometer traces.
8. Describe how to investigate habituation to a stimulus.
Thanks a lot.
hey i have answers to 3 4 and 5 if u still want them send me a message and ill send it
and for one its just that u need to know all the sampling techniques such as random and systematic then lincoln index and mrr method along wid transacts and quadrats and other
i have some notes on that as well those ill attach cause they are already scanned
and if u need the others just tell me i m doing edexcel as well and know wat a pain it is
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the exam was pretty simple .. there was no need for all these experiments .. just some common sense :P
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hey i have answers to 3 4 and 5 if u still want them send me a message and ill send it
and for one its just that u need to know all the sampling techniques such as random and systematic then lincoln index and mrr method along wid transacts and quadrats and other
i have some notes on that as well those ill attach cause they are already scanned
and if u need the others just tell me i m doing edexcel as well and know wat a pain it is
please we need the rest of the experiments cuz these r very difficult. i searched a lot for these experiments but unfortunately i couldn't find them so please send them if u dnt mind..Thanx
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please we need the rest of the experiments cuz these r very difficult. i searched a lot for these experiments but unfortunately i couldn't find them so please send them if u dnt mind..Thanx
yes plz Kim, I really need that too so plz post them asap.thank you
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the exam was pretty simple .. there was no need for all these experiments .. just some common sense :P
Yea except that this exam has NEVER been tested before. >:(
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edexcel Biology Unit 3B alternative to practical? this session was the 3rd paper mate :-\
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i just realized u guys are doing unit 3b and u need theses experiments mostly for unit6
but u do need some
so i will post them up by tomorrow
cause i need to scan them
so ull see them here by tomorrow
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Thanks very much kim 4 ur help and I'll be waiting 4 ur experiments by 2morrow.
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Thanks very much kim 4 ur help and I'll be waiting 4 ur experiments by 2morrow.
sure no problem
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FOR THE A2 BIO EXPERIMENTS
CHECK THIS LINK https://studentforums.biz/index.php/topic,7364.msg195080.html#msg195080 (https://studentforums.biz/index.php/topic,7364.msg195080.html#msg195080)
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yessss thank you so much for all of these!
my school is literally broke so we havent done any of these experiments
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thanks to all who helped us in biology edexcel.
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Thanks very much kim 4 ur help and I'll be waiting 4 ur experiments by 2morrow.
as promised here u go
sorry it took me soo long but i got lazy hehe
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Hey, Kim that's a great job.thank u very much 4 ur help, but if u don't mind can u send the rest of the experiments cuz I don't have them.I really appreciate ur help. :) :)
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as promised here u go
sorry it took me soo long but i got lazy hehe
thank u very much. I do appreciate ur great effort in scanning and posting them. if u have more plzzzzzzzzzzzzz send them cuz I don't have them too.
:)
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awww shucks no problem
well i have others i will upoad them
but isnt unit 3 already over???cause i gave it last week
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awww shucks no problem
well i have others i will upoad them
but isnt unit 3 already over???cause i gave it last week
yes, unit 3 is over but I'm asking about 6BIO8 Experiments.
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yes, unit 3 is over but I'm asking about 6BIO8 Experiments.
all practicals here
CHECK THIS LINK https://studentforums.biz/index.php/topic,7364.msg195080.html#msg195080 (https://studentforums.biz/index.php/topic,7364.msg195080.html#msg195080)
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yes, unit 3 is over but I'm asking about 6BIO8 Experiments.
yay ok no prob
i cant wait to get it over wid hopefully it will be a good paper
and here some others i have
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yay ok no prob
i cant wait to get it over wid hopefully it will be a good paper
and here some others i have
hey, kim these are 4 AS(6BIO7) and the exam is over. I need A2 experiments which are:
1. Describe how to investigate the effects of temperature on the development of organisms( eg seedling growth rate, brine shrimp hatch rates)
2. Describe how to investigate rate of respiration practically.
3. Describe how to investigate the effects of excercise on tidal volume and breathing rate using data from spirometer traces.
4. Describe how to investigate habituation to a stimulus.
Thanks a lot.
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hey, kim these are 4 AS(6BIO7) and the exam is over. I need A2 experiments which are:
1. Describe how to investigate the effects of temperature on the development of organisms( eg seedling growth rate, brine shrimp hatch rates)
2. Describe how to investigate rate of respiration practically.
3. Describe how to investigate the effects of excercise on tidal volume and breathing rate using data from spirometer traces.
4. Describe how to investigate habituation to a stimulus.
Thanks a lot.
well the thing is although i have 1 but it is only diagrams no notes at all so is hard to understand
for 2 and 3 u just need to know the spirometer and how it works
i m sorry to say i dont have much notes to provide there but ill check if i can find some notes on the spirometers in my txtbks then ill upload it for ya
sorry
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hey, kim these are 4 AS(6BIO7) and the exam is over. I need A2 experiments which are:
1. Describe how to investigate the effects of temperature on the development of organisms( eg seedling growth rate, brine shrimp hatch rates)
2. Describe how to investigate rate of respiration practically.
3. Describe how to investigate the effects of excercise on tidal volume and breathing rate using data from spirometer traces.
4. Describe how to investigate habituation to a stimulus.
Thanks a lot.
did u check the link i gave u
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well the thing is although i have 1 but it is only diagrams no notes at all so is hard to understand
for 2 and 3 u just need to know the spirometer and how it works
i m sorry to say i dont have much notes to provide there but ill check if i can find some notes on the spirometers in my txtbks then ill upload it for ya
sorry
thanx a lot kim for ur great help and effort. It is a very great job ..I hope that 6BIO8 will b easy.. thanx once again :)
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thanx a lot kim for ur great help and effort. It is a very great job ..I hope that 6BIO8 will b easy.. thanx once again :)
no problem
i only wish i could have helped you more
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did u check the link i gave u
I have just checked da link. thanx 4 ur help.. :)