GCSE Biology Revision "Required Practical 6: Photosynthesis"
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- เผยแพร่เมื่อ 12 ต.ค. 2017
- GCSE workbooks www.amazon.co.uk/Dr-Shaun-Don...
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In this video, we look at how to investigate the effect of light intensity of the rate of photosynthesis in a pondweed. This is a required practical so you need to learn the details.
This video is based on the AQA spec. If you are following a different exam board then you should check your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
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Anyone here for 2024 exams?
Last minute revision squad where u at
loololol
It’s been two years
here
Late but here
@@BatSoup67 its been 2 months
as always... my procrastination got to me and now there is 24hrs until my first biology exam. Thankyou Freesciencelessons for being a countrywide backup for people like me
me rn 💀💀
Feel the same way right now aiming for the grade 9 victory😭🫣goodluck 🤍
This is it man, good luck tomorrow
same! the fact that you posted this five hours ago and it already has 100 likes says a lot lol
😂😂 same
exam on tuesday and binge watching free science lessons
what a bloody life saver
Same Here
haha same gd luck
All aboard the last minute revision train
how was the exam lmao
@@Ameli5a they never answer...
3 years later - exam on tuesday and binge watching free science lessons
what a bloody life saver
same
Lolllll same😅 good luck tomorrow !
It is this morning now, good luck everyone
got a bio mock literally next tuesday
@@StxngVfx me too, good luck for tomorrow
anyone watching for biology gsce tmrw if you see this you are going to absolutely smash it
hope so :(
Let's hope so
CLAIMING W POSITIVE ENERGY 🙋♀️
appreciate it boss good luck
Thank you !!
I must appreciate you, that you are helping out humanity. With you, humanity is learning and gaining knowledge. You clear the concepts and make subjects easy. You must have helped many people in earning A*. Thumbs up to you and your work, Sir!
69th like*
@@nimble3492 169th like
312th like
@@damndexk4127 you just messed it up
369th like
carrying on the legacy, exams in 2 days and freesciencelessons got my back
Biology GCSE in a week and this guy is actually amazing, thank you so much for everything you have done for all the GCSE students, you are a hero!! Good luck with revision and for the exam guys, you'll all do great
Good luck man my GCSEs are tomorrow too
Mines tomorrow lol love cramming
How did u do
Last minute revision gang
🙋♀️
😣
🥰
YEAHHHHH
started revising with 20 mins to my exam
who's here for their biology exam tmr 🙋🏾♀️
me
me except way later 😘
Yeahhhhhhh!!!!! 😎
Me and it's funding horrendous
me, only 2 hours nd 40 mins left
I'm just scrolling and see all these comments from 11 months ago
revision is killing me but hopefully it's worth it
Same binging his videos the day before
@@Academicallystressedout lolll
seeing your comment from 9 months ago… amazing how time works lol. but also kinda sad
now your comment is 11 months ago and im in your exact situation
11 months ago again
GCSE Exam on Tuesday gonna start praying now 🙏
I've got 48 hours until my exam, thank you so much, you're a real lifesaver
How did it went?
@@afrosamurai6705 bro that was ages ago he won’t reply
@@seriously1680 do u know why people are so extra when they say things like "48 hours" cant they just be normal human beings and stop pretending they're like artificial intelligence and robots and just simply say "2 days"?!?!?!?
Biology gcse paper 1 tomorrow and i forgot required practicals existed lmao
Update: I remembered the duckweed practical 😈
Same
lol
I got the exam tomorrow too, good luck!
How did it go
how did it go? i hope you did well
@@xcybercatzi have my gcse exam is less than 1 month just some last minute revsion
Every mock exam I see people have come here in the past for their exams. It's quite literally me now! Thank you so much Dr Donnelly, you've done so much for me, and I haven't been within 100 miles of you at any point (unlike my teachers) and now I feel confident that I can grab that grade 9.
2:18 the foundation tier students got roasted ngl
Free the people in set 5
class of 2023 where u at
MESSAGE TO YEAR 10s: START REVISING EARLIER ON DONT MAKe the same mistake as me!
Too late :/
Probably should have looked at this before revising the night before hand then?
When roughly do u recommend? Before year 11 or start at year 11
@@urmumsfavourite well im revising for my bio mock now and its 2 hours until the exam lol- probably best to start about a month before your mocks to account for all the gcse ur taking
@@justinfung4351 lmao i too late aswell
watching this the day before my exam we
jess mx same :(
me rn :( good luck!
Same
Watching this the morning before😂
Anybody making sure that they don’t have to suffer from exam preparation stress by revising early for the 2020 GCSEs? Or is it just me :(
did you do the exams, or not because of quarantine? hehe
this comment didn't age well lol
@Subhaan Bin-Naeem ye, it really wasnt good for them. it was only done because they needed a way to grade the students, but some students got grades tbey were not happy with, because they may have done worse in the mocks or on their predicted grades than the gcse. also, they may have been a naughty student, but know a lot and would have done well in the GCSE.
@@xhibah It kind of did. Because by the looks of it this person did well for the mocks so im pretty sure this person got the grades that was wanted.
Rip y
Freesciencelessons and x1.75 speed is a life saver
yeah buddy you wont be able to comprhend nor process any information beign directed towards you
let's go everyone exam on tuesday !!
ya rabb give us all amazing grades this summer and inshallah all of our fasts get accepted
ameen
ameen
Ameem
Haha anyone watching the day before the exam pahah
Nat Sodzi Yepppp! Got it in the afternoon tomorrow! Good luck x
😎
my grade is in this blokes hands
no *crys*
why of course
good luck everyone for Tuesday and thank you so much you have been a life saver
@Tahiba Uddin me 2 wtf
my yr 10 mock is on Tuesday lol
in quarantine, gonna fail my exams, all i got now is youtube...
whats a skeleton wars
the INTERGALACTIC SKELETON WAR
Thanks so much for your help! If it wasn't for you I don't think I could have got 81% In my physics test! It means alot what you do;)
Thanks for the comment. I happy to be able to help.
Same
less than 12 hours till my biology exam... binge watching free science lessons. you are a life saver
this man is a life saviour
I’ve used your videos virtually all year and they’ve been a massive help!! I feel ready for Bio paper 1 now!! Good luck to everyone who has their exam today!!
I was so confused by this experiment because the teacher barely explained it, but your well explained but still short and precise video was a life saver
Can you make some exam type questions and share it? That would be really helpful. You are a wonderful teacher. Also, please give key for answers.
Using this to revise my practical's 1 day before the exam, thank you for being a life saver.
2019 anyone?
inshallah
yeah man
Mad you were early bro revising this, you getting a 9
Before watching video
Me:Just a bit of recap won't hurt
AFTER UNDERSTANDING THE INVERSE-SQUARE LAW
Me: That feeling when you realise your teacher skipped some major details
Lol im sitting for the exam in *4 hours* from now!
Freesciencelessons honestly was my guardian angel
Tysm!!
When I started revising this topic I told myself I'd aim for a grade 7. I then watched this video and told myself 'Nah I'm getting a 9.'
Thankyou for these revision videos they do help people out and you don't fuss about and ramble, you get straight to the points, cheers
I literally have about 11 hrs until my exam and I’m still here watching this absolute ledg. I should probably be sleeping.
Whos here revising 4 days before bio paper 1? --------->
12 hours 😐
the morning of 🙋🏾♀️🙋🏾♀️🙋🏾♀️
If you are reading this, goodluck on your exams. You got this
Thanks this is helping so much as most of my days before the GCSE are just holidays.
exam in the morning and i have been binging these videos, im so ready
12 hours left until the bio exam. I love you sir xx
night before and mornin before thank you for being my best revision resource
Exam is today and this man is my saviour 👏🏻
Tuesday 14 May boiiiii
rain coco can see this coming up on tuesday
Best science teacher ever!!!!
REVISED ALL MY PRACTICALS!
WISH ME LUCK!
An hour until the exam! Last minute cramming
thankyou i have my biology exam tomorrow and your videos are a life saver
Wow, brings back the memories of revising this and that, lots of talks from friends and teachers.
When do you recommend to start revising -from a current year 10
@@urmumsfavourite whilst your in year 10
Only 1/2 hours a day. It'll help a lot in year 11
your practicals are perfect thank you so much! My exam is tomorrow!
Revision the morning of my exam, thank you so much!!
saviour for the last minute revision!
A cheeky insha'allah and freesciencelessons should do it
This came up!! Thanks mr science guy
im going into my exam in about an hour and like, thanks dude :)
Thank you for teaching us about the LED lamp! There was a question on how to improve the results, of a diagram with a 60W bulb!
Use a clear heat shield works as well
Exam starts in an hour and a half come on lads
Anyone else here exactly an hour before their real exam?
My school is using your video in most of their lessons. Thanks for the help. 😝
bio p1 tmr, thanks for the straightforward explanation.
20 mins before exam 💪
Learning this 4 hours before my exam
Never felt better
exam is today :) all the best wishes to do well in your bio paper 1 exams.
Last minute revision squad activate!!
brilliant last minute revision for tomorrow! Thanks for saving my bacon.
Good luck in a few hours guys, even though you are scared or worried that you haven't done enough calm yourself and imagine the best possible outcome. Stressing yourself will only make you forget everything.♥️
Absolutely terrified, but thanks sir!!
where were u when I had no clue about science classes
I feel asleep watching this during class so here I am rewatching it
11 hours to go and I'm still here ;)
Revising a hour before my gcse 👍🏼
You're saving my November mocks no lie
Now he needs to save me in my feb mocks
Good ol Free Science Lessons on Biology Exam day
So if you double the distance again (40 - 80) the number of bubbles will fall by a factor of 4 is that right?
Yes that is right
For exaple it could fall from 12 bubbles to 3 bubbles
Hope that helps
@@Douglas..1 yes thank you its helpful but my question is why would u even double the distance in the first place? is it because it saves time redoing the experiment or something?
@@layekk hes just saying that, that is the trend it usually goes by you shouldn't skip a distance
good luck to anyone w an exam today!!
Love the way my exam is in an hour
merci beaucoup monsieur. Ces videos sont super!
Merci, de rien.
@@Freesciencelessons The legend even knows french!
Also, please make a video on System Nervous Co-ordination. :)
please please please pleaseee, do some more a level content, it would be appreciated so much
when your measuring the volume of oxygen produced do you still use hydrogen carbonate solution in the boiling tube containing the pond weed or do you use water instead.
i luv u mr free science guy ❤
what 2020 quarantine be like
thank you so much
Is there another method you can do this using a capillary tube to collect the gas bubbles?
its 12:24 am day of bio paper 1 and im cramming the practicals.honestly i might just do a whole night revision
Lol cramming for 2020 GCSEs lol!
meeeee
my fav science guy
thank you
Good luck class of 2019 we will smash it... hopefully
for some other exam boards apart from AQA (what this channel teaches btw) - you have to know how to calculate inverse square law e.g. i know that you have to do it for edexcel exam board
I'm not sure if you have to do it for OCR 21st Century but like no schools do that one lol
Do we change the plant when changing the distance between the lamp and plant?
you are my god
So like I’m on lockdown and have to do a little essay on this and hand it in today when I had a week to do it and I have no clue what this is so I’m very glad (edit: I didn’t do it 🙂)
I had to do the same thing then the PM cancelled school for a week so we dont have to do it anymore
Currently cramming this in 9 hours before the exam
U are a livesafer! Thank uuuuuu my g xoxxoxoxoxo
(I’m too happy lol)