GCSE Biology Revision "Effect of Temperature and pH on Enzymes"

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School licenses from 40p per copy www.freesciencelessons.co.uk/...
In this video, we look at the effect of temperature and pH on the activity of enzymes. We explore how the structure of the active site of an enzyme can be denatured.
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.
Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (creativecommons.org/licenses/...)
Source: incompetech.com/music/royalty-...
Artist: incompetech.com/
Image credits: All images were created by and are the property of Autonomy Education Ltd.

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2 сен 2017

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Комментарии : 167

@-...480 7 месяцев назад

Who's here for 2024?

@bushraabamom 3 месяца назад

Me 😨😨😨

@ari_25930 3 месяца назад

me!!

@bencullen5065 6 лет назад

Genuinely these videos have taught me a year of science in 5 hours.

@Tepedi 2 года назад

Because In school you are distracted somehow you don’t even realise. In here you are specifically came to learn without any disturbances

@jaiden4775 2 года назад

@@Tepedi true dat

@origamiforyou2046 2 года назад

SAME

@eliasabdul499 4 года назад

Dude Deserves a Grammy for best teacher

@hasanmohamed1935 6 лет назад

Great you summarised this topic perfectly in 3:40 min my teacher did it in 2 hours

@miashaw1599 5 лет назад

Hasan Mohamed my teacher hasn't for thr past 2 years

@sleepzy3213 3 года назад

LOL

@xxgullyboy123 Год назад

@@sleepzy3213 BAHAHHAHAHHAHAHAHA

@holleyjane7993 Год назад

Give this guy a medal. Have been scratching my head for days on these graphs wondering what the whole line individually represents, you just made someone with adhd FINALLY understand. Thank you sir.

@GhostLightPhilosophy 5 лет назад

How can you teach something like this in under 4 minutes that my teacher would take all lesson.

@joshuapenton535 2 года назад

No waffle straight to the facts I guess lol

@chilly9886 Год назад

cause there are other people that the teacher has to teach, with fresciencelessons guy its a one on one

@sophialake7756 3 года назад

I would die for this man.

@AsifAli-qw8hi 2 года назад

Being just a kid, I appreciate your guidance. you have my deepest thanks. It really helped me.

@lola100yearsago8 2 года назад

Give this guy an award

@HH-jv6pt 5 лет назад

WHY CANT U BE MY BIOLOGY TEACHER😫😫

@staceybaker5176 4 года назад

Hj Xo he is online

@ayailyasfatima383 6 лет назад

*Great videos, really so helpful, i use them everyday!!! Hope i'll get a 7 in my upcoming test!!!*

@davidmkwizu76 6 лет назад

Ayailyasfatima 3 same here

@chrissy9717 Год назад

i swear this guy teaches science better in less than 4 minutes compared to my science teacher of 3 years

@aburdett9858 4 года назад

im off school and these lessons really help me to get back on to what we are doing in class

@Eva-iy8vl 4 года назад

Aleks Ssi yeah same

@Akari-Editz_ 7 месяцев назад

Same

@chop4lyf 6 лет назад

9 weeks till my real GCSE exam, my shit biology teacher still can't spell her own name. :/

@HelloKitty-wu5mh 6 лет назад

so true!!!!!!!!!!

@flystylz 6 лет назад

Adam Mohee good luck in your exams. I'm revising for my GCSE exams too.😥😥

@jayansaini7093 2 года назад

i did mine in the summer and cos my teacher was good i got a 9

@demarcusjamesbartholomewth8611 2 года назад

@@jayansaini7093 do you have any tips? im in year 10 and really want to do good

@clair3nyw 2 года назад

These videos help me so much Im so grateful they make these its literally straight to the point and precise too tysm for this!

@chesswithmaurya636 2 года назад

why doesn't he have a million subs? Thank you for all that you have done for students. Thank you savior

@jsuwheiwnwsa3570 Год назад

Because there are only so many year 10s and 11s

@johnr3936 6 лет назад

Phenomenal information, presentation and production. Well done.

@origamiforyou2046 2 года назад

Its my first vid here and it was the best ever learning platform EVER IN EXISTENCE

@ryuoopbr2503 6 лет назад

Thank u so much for replying so fast thank u

@musk4567 6 лет назад

You truly are the best

@wagwewaltz5748 4 года назад

Great video! Showing my students this tomorrow. Thanks

@vane3330 6 лет назад

The best science videos🙂👍🏽

@Sonia-mh9eh 3 года назад

Im binging the biology paper 1 playlist at 1.25 speed my bio mock exam is later today lord help me

@randomaudiotest 3 года назад

How was it? :)

@tajriano 5 лет назад

It took me 2 weeks to learn this in class.I understood it from YOU better in 3:40

@studywithrainbow4593 3 года назад

The fact that you summarised everything in 3 minutes and 40 seconds, but my teacher took three whole lessons to teach us this...

@fnaffan9946 2 года назад

Thank you so much! Your videos are very useful!!

@yumnashah925 5 лет назад

Wow do you like teach in like a school or something I bet you cover the whole biology course in one lesson 😂I wish I was your student

@MochiibaoDraws 4 года назад

Armyyyyyy💜

@MintyMinho 3 года назад

SAME LOL

@walidyt2007 6 лет назад

thank you for the best video on the youtube thank you I wish to pass my GCSE if I care to watch your video

@makkn9617 6 лет назад

Nice new intro, I feel its better than the old one

@chloegiron 6 лет назад

Incredible explanation thank you so much

@dahlia5644 2 года назад

Hi Sir, just did my gcse bio paper 1 exam (trip higher)! AQA were being sneaky as the practicals weren't 6 markers and nothing on the heart came up, perhaps a link to arteries in one question but that's about it. Despite that, just wanted to say a massive thanks- I wouldn't have came out of that exam pleased overall as i had done without your videos. My weakest subject is Biology in school in particular paper 1 but i think thanks to your help i might have a chance of getting a 7. Hope you are well!

@juicedvoid5988 2 года назад

Bruh it is about 14 hours till my biology exam and i am only just finding out this knowledge :)

@cerebral1434 6 лет назад

honestly so helpful

@Anonymous-uc3us Год назад

Great video... You deserve the best teacher trophy...

@danielabou-hamzeh4102 4 года назад

absolutely amazing.. thanks

@omegaoctagon9668 4 года назад

Bless this man

@marib5440 2 года назад

I GOT THE BIOLOGY TRIPLE EXAM TOMORROW GOOD LUCK!!!

@DimoBoychev 5 лет назад

anyone here for next week lolz

@Inferno-ob9td 5 лет назад

dimoboychev Yeah shit man. I started too late

@himothyobama2925 5 лет назад

honestly

@yuvika_yt 3 года назад

Omg that's amazing in 4 min whole concept 🥺🤧

@user-or1tp5bo5q 6 лет назад

You're amazing tysm

@lovelypawz3958 5 лет назад

thank you for the help

@arkamix1238 6 лет назад

Biology exam tomorrow. Thanks so much xD

@hasangamer7777 2 года назад

U teach very good topics in less time

@waddahelmihana5251 3 года назад

this was so helpful thanx

@nikkidejageh8922 6 лет назад

thank you very much dear sir

@tayacarver5077 5 лет назад

Do we need to know the effect of substrate concentration for AQA ?

@eloise-mariebamford1737 4 года назад

We love you Shaun

@farkhondawahidy1576 2 года назад

what is the difference between optimum and optimal temperatures??? please answer this....

@Freesciencelessons 2 года назад

They mean the same thing.

@hamzamohammed8330 5 лет назад

Thanks sir really appreciated as I am going to be doing alevel bio and chemistry

@abedalrazaki3870 2 года назад

are you doing a level bio and chem? now

@racenation610 6 лет назад

ur amazing

@mariam-mk6hb 2 года назад

Biology 2022 gcse are tomorrow, hope I do good

@semhar4748 5 лет назад

So does each enzyme only work in one pH?

@jordanconway3399 5 лет назад

Biology tomorrow yay

@aadamhashmi5594 5 лет назад

lol im doing it all today and tmo and i honestly have learnt sm

@ryuoopbr2503 6 лет назад

I honestly understand everything and I'm a subscriber because it videos helped me so much but I did not understand one thing in this video that I'm not sure of is enzymes and active site the same thing plz answer quickly cuz I have an exam tomorrow

@Freesciencelessons 6 лет назад

Hi. The active site is a groove on the surface of an enzyme molecule. So the active site is the specific part of the enzyme where the substrate fits in. The active site is not the SAME as the enzyme, it's PART of the enzyme. Hope that's ok. Good luck in your exam.

@tarehomj7229 6 лет назад

Freesciencelessons Round of applause

@abedalrazaki3870 2 года назад

how did that exam go after 4 years?

@janamohamedbakr1316 4 года назад

thank god you exist

@Ari-mc4pu 2 месяца назад

here morning of biology gcse 😵‍💫 good luck to everybody today!!

@leoulzelalem7913 Год назад

thank you so useful

@noel5544 2 года назад

tnq , gr8 explanation

@hamzamohammed8330 5 лет назад

Sir. An you make alevel bio and chemistry videos for September this year please reply

@Freesciencelessons 5 лет назад

I will be making A level Chemistry and Biology videos later in 2019 (it might not be September though).

@veroacev123 2 года назад

THANK YOU!!!

@glavinmenezes2427 5 лет назад

Thank u sir

@elizabethwright568 Год назад

I just imagine him reading the comments and kicking his feet

@topwaffler5117 5 лет назад

What's up with the revision workbooks?

@Khemani_RL 4 года назад

This person is an angel from heaven

@mia-qf5ml 2 года назад

Thanks to me for upping the grade boundaries xx 😎😎

@tahirkhanvlogs4753 2 года назад

Great lecture. Learn a year lessons on 5 minuts

@fexbd 4 года назад

Nice blazer, sir

@infocosmeticdoctor2342 Год назад

What is the difference between Triple and Combined Science Higher Books please?

@Freesciencelessons Год назад

Triple students cover a greater range of topics than those studying combined science. Triple students are awarded three GCSEs (Chemistry, Biology and Physics) whereas combined science students are awarded two GCSEs (called Combined Science). The books cover the topics appropriate to each strand. The triple books contain all of the content of the combined science books plus the extra topics needed for triple.

@tomfoster1249 4 года назад

Hi sir, Do we need to know what enzymes work best at specific ph conditions? Thanks

@uzairakhan736 3 года назад

Never did get your response did you...He's just the Tom Cruise of science, too busy.

@fireemperorzuko8756 3 года назад

I'll answer, no you don't need to know specific PH but you do need to know whether it's alkaline or acidic PH's that they work best at

@gonkdroid4152 Год назад

the goat

@samaksh2908 4 года назад

Quarantine revision🤘🏾

@rania6840 3 года назад

My biology mock is in an hour 🤣 thanks for condensing the information for me

@lola100yearsago8 2 года назад

I’m revising for my mocks too

@charizardb2029 6 лет назад

pray for me exam tomorrow

@Doogie13 4 года назад

did you get an A?

@julshsl 5 лет назад

on the day revision gang

@mohisasenchuri718 3 года назад

how do you know that that enzyme works best at an acidic pH and the other one alkaline pH, they all look the same to me?

@Freesciencelessons 3 года назад

If you look at the pH (on the x axis) that the enzyme works fastest at, that tells you the optimum pH.

@learningconcept8053 3 года назад

Good lacture

@ayeshamariyan7597 2 года назад

One question. What will happen to the enzyme if it is too much neutral like amylase which brakes up carbohydrates into glucose ?

@ahmedsheikh1719 2 года назад

how will he answer the vid is from 2017 and where in 2022 💀

@ellaashford6069 2 года назад

if its not in the right conditions then the enzyme will denature (which basically is a fancy word for change shape) which ruins the lock + key theory because it no longer breaks down the molecule it was made for, so basically if a protease molecule was in neutral ph conditions, it wouldnt break down protein molecules because they're meant to be in the stomach which has a v acidic condition

@sonytatiev6977 6 лет назад

great got exams tomorrow ahhhhhhhhhhhhhhhhhhhh

@MV29321 Год назад

here at 11pm on the night before my bio gcse

@imanamjad2203 3 года назад

Plz upload past paper questions too

@Cookieplayxz 4 года назад

If enzymes were really can be used in our GCSE Revision to boost our memories it would be great Pleasure and we so though get A*in our Cheeky GCSE

@rm9694 3 года назад

it wasnt funny mate

@fireemperorzuko8756 3 года назад

@@rm9694 didn't have to do him like that💀😂

@edwin6124 5 лет назад

good

@justinahamukoto9016 2 года назад

Oh Lord help me understand more and learn what I never expected to learn and understand

@elitemacaroni6620 5 лет назад

what about the enzyme in the middle, what enzyme is it?

@Freesciencelessons 5 лет назад

It's not any particular enzyme. It applies to any enzyme.

@elitemacaroni6620 5 лет назад

Freesciencelessons ah right, thank you

@teddybearleyla8678 6 лет назад

10 days left till my paper 1 bio!

@theultimateconspiracytheor5778 6 лет назад

8 daysss

@aderayograce6123 6 лет назад

Good luck

@Ellie_maee 6 лет назад

4 days!!!

@leeyanlewis6379 6 лет назад

3 days!

@ahmedbenhariz8694 6 лет назад

tomorrow !!!

@lakeshadowmyth 5 лет назад

Boss at science

@Freesciencelessons 5 лет назад

Thanks.

@lakeshadowmyth 5 лет назад

Your welcome

@muhammad-zaynkalyan6051 5 лет назад

Do we need to know optinum temp in humans

@kimsmallz9860 5 лет назад

yes

@christinadsouza467 2 года назад

2022 gang ?

@tishaprnucedteasha 2 года назад

here

@babatundeson9883 2 года назад

yes man tmrw is the exam :'(

@mia-qf5ml 2 года назад

I'm too scared for gcses I'm not gonna do them 👹👹

@tadasha 2 года назад

it’s not that scary, trust me. you can do it

@tayyebaomair Год назад

I’m literally watching this at like 5am at the same day as my exam 💀

@coreforce9872 3 года назад

Anyone at home-learning?

@paddywarner4452 2 года назад

Passed science GCSE so sadly I no longer need you but your a useful guy and I wish you the best so enjoy the rest of your life Shawn. Goodbye 🙂 👋🏻

@edwin6124 5 лет назад

lit

@TheCaptainH 5 лет назад

If the active site becomes denatured, why do we recall the enzymes being denatured?

@Freesciencelessons 5 лет назад

Strictly, it's the active site that denatures.

@TheCaptainH 5 лет назад

@@Freesciencelessons Even if you were to say the enzymes denature, would you still get full marks? Or does the mark schemes strictly say you have to recall that the active site denatures.