[00:00] Enzymes are biological catalysts that speed up metabolic reactions in living organisms - Metabolic reactions are constantly taking place in organisms to maintain their living state - Enzymes are proteins that increase the rate of chemical reactions and are not changed by the reaction itself - Enzymes have an active site that fits the substrate on which it acts - Enzyme-substrate complex is formed temporarily when the enzyme combines with the substrate - Enzymes are crucial to living organisms as they speed up metabolic reactions necessary to sustain life [02:33] Enzymes work through a lock and key mechanism where the shape of the substrate must match the active site of the enzyme - Enzymes and substrate molecules have complementary shapes - Enzymes are specific and will only act on one substance - Factors that affect enzyme activity include temperature and pH - The rate of an enzyme-catalyzed reaction increases as temperature increases due to successful molecular collisions [05:04] Enzymes have optimal temperatures for activity, but high temperatures can denature them - Different enzymes have different optimal temperatures - Denaturation occurs when high temperatures break the bonds in enzymes, changing their shape - Enzymes have a specific active site shape that fits a specific substrate shape - A change in the active site shape due to denaturation will cause the enzyme to stop working - Low temperatures result in low enzyme activity, but do not denature enzymes - Enzyme activity increases with temperature up to an optimum temperature - Beyond the optimum temperature, enzyme activity decreases again due to denaturation [07:36] Enzymes function as biological catalysts with optimum temperature and pH - Most enzymes work best at 37 degrees Celsius in the human body - Enzymes have an optimum pH, and deviation from it can cause denaturation - The rate of reaction is highest at pH 8 for some enzymes - Different enzymes have different optimum pH, e.g., pepsin works best at pH 2, while amylase works best at pH 7 THANK YOU
Great explanation,very useful for overall revision before i re-read the chapter;I also got to know that some of my friends are already viewing your channel Thank you so munch; it is and will be very useful until my igcse exams in 2025
enzymes are biological catalysts (increases rate of chemical reaction and remains unchanged). enzymes are proteins that speed up rate of reactions. we can use enzymes anytime since they dont get used up in reactions. 1:22 without digestive enzymes animals wouldn’t be able to break down food molecules in order to survive. enzyme has shape called active site. (where it acts) substrate is specific to its active site
There is a request Could you please upload a revision video that includes revision qns for all the topics from chapter 1-5 Pls include theory and msq qns
Hi there! These videos strictly follow the syllabus for Paper 0610. However, there maybe a lot of similarities with the syllabus you are referring to. So I would suggest to compare both syllabi and check for any additions/exclusions.
Please make Chapter 17-full syllabus videos before June 8 Igcse Mcqs exam. These videos are blessing for upcoming Igcse students also it's helpful for Year 11 students that are giving their exams. I'm in Gcse I'm revising some concept before P4 Alternative to practical Exam And will revise full syllabus before P1 mcqs exam
@Red_J_Hood this might be for year 10 since I am in year 10 and I took this lesson this year but also for whoever is taking it igcse has to revise these lessons because they will be in the exam
@@Red_J_Hood igcse board exams are taken by students at the end of their grade 10. while most schools start the syllabus in grade 9, there are schools that are different, for example, some schools start the syllabus only at the start of the grade 10 academic year, or my school, for example, started the syllabus as early as the beginning of grade 8 to give students more familiarity with the course and more time to prepare. generally, all students take their igcses at the end of grade 10, regardless of when they start.
Thank you for your feedback. Just to clarify, our videos strictly adhere to the syllabus for Cambridge IGCSE Biology paper 0610. This information is clearly indicated in each video thumbnail and description. If the content you are referring to is not available in our videos, then it is likely not required in the syllabus that our videos cover. If you feel any area is 'missing', please compare the syllabus of your specific paper against the one our videos follow. You can find the syllabus booklet for IGCSE Biology Paper 0610 for the years 2023-2025 on the Cambridge International website: www.cambridgeinternational.org/programmes-and-qualifications/cambridge-igcse-biology-0610/
[00:00] Enzymes are biological catalysts that speed up metabolic reactions in living organisms
- Metabolic reactions are constantly taking place in organisms to maintain their living state
- Enzymes are proteins that increase the rate of chemical reactions and are not changed by the reaction itself
- Enzymes have an active site that fits the substrate on which it acts
- Enzyme-substrate complex is formed temporarily when the enzyme combines with the substrate
- Enzymes are crucial to living organisms as they speed up metabolic reactions necessary to sustain life
[02:33] Enzymes work through a lock and key mechanism where the shape of the substrate must match the active site of the enzyme
- Enzymes and substrate molecules have complementary shapes
- Enzymes are specific and will only act on one substance
- Factors that affect enzyme activity include temperature and pH
- The rate of an enzyme-catalyzed reaction increases as temperature increases due to successful molecular collisions
[05:04] Enzymes have optimal temperatures for activity, but high temperatures can denature them
- Different enzymes have different optimal temperatures
- Denaturation occurs when high temperatures break the bonds in enzymes, changing their shape
- Enzymes have a specific active site shape that fits a specific substrate shape
- A change in the active site shape due to denaturation will cause the enzyme to stop working
- Low temperatures result in low enzyme activity, but do not denature enzymes
- Enzyme activity increases with temperature up to an optimum temperature
- Beyond the optimum temperature, enzyme activity decreases again due to denaturation
[07:36] Enzymes function as biological catalysts with optimum temperature and pH
- Most enzymes work best at 37 degrees Celsius in the human body
- Enzymes have an optimum pH, and deviation from it can cause denaturation
- The rate of reaction is highest at pH 8 for some enzymes
- Different enzymes have different optimum pH, e.g., pepsin works best at pH 2, while amylase works best at pH 7
THANK YOU
Thank you
Thank you ❤
I LITTERALLY LOVE YOU THANK YOUUU
@SSteetoot
@@SSteetooti love u too
As an igcse student i always refer to yr videos and they are always helpful ❤
That's awesome! Glad to be of help!
@@IGCSEStudyBuddy yes this is the best ig video u can understand and everything is organized glad to find this channel
Please make a series on physics chp as soon as possible because it is very helpful
Great explanation,very useful for overall revision before i re-read the chapter;I also got to know that some of my friends are already viewing your channel
Thank you so munch; it is and will be very useful until my igcse exams in 2025
Thank you for sharing! And thank you for your words of appreciation!
Boht achi video ha igcse ka students ka lia
good job genius
enzymes are biological catalysts (increases rate of chemical reaction and remains unchanged). enzymes are proteins that speed up rate of reactions. we can use enzymes anytime since they dont get used up in reactions. 1:22
without digestive enzymes animals wouldn’t be able to break down food molecules in order to survive.
enzyme has shape called active site. (where it acts)
substrate is specific to its active site
Is it possible for you to do physics subject 0625? Your bio is really helpful
06:40
According to Cambridge, the optimum temperature is 35⁰ C not 40⁰C
Enzymes best function at 37°C, after that they start getting denatured so according to this at 40°C approximately they will start getting denatured.
honestly, the best yt channel for igcse bio i've reached so far
So glad to hear!
Paper starts in 8 hours, I haven't even slept, 3 of my chapters are left and I am currently doing study buddy 😭
I am having biology paper in morning and I am seeing this video for help .
Your videos help alot
All the best!
I am using this channel for overall revision and by far is the best
Thank you for this positive feedback! 😊
@@IGCSEStudyBuddy hello there, won’t there be any revision videos for chemistry after electrolysis
@@GoogleYahoo-th8fb yew waiting for those too. do you know any other good yt teachers for syllabus revision?
Thank you so much. May God bless you
You are very welcome! Wish you the same :)
Love watching your video very helpful chanle ma Allah bless you with a lot of tarkii
Thanks so much for this i have bio quiz tomorrow ❤❤❤ this vedio is very helpful
Glad it was helpful!
Thx so much I really found it useful thx so much❤
You're welcome!
There is a request
Could you please upload a revision video that includes revision qns for all the topics from chapter 1-5
Pls include theory and msq qns
Thank you so much for your feedback. Will definitely keep this in mind when creating future content.
Thank you smmmmm!!!! this video was helpful for the revision of ch 5.
Glad it was helpful! You’re welcome!
@n. 111. is this enough to prepare from for olevel gce?
@@mutibaimran505 no , it was just for the revision , to test my knowledge regarding that specific chapter , I do pastpaper questions of that chapter
I've been spam watching these video. I understand perfectly
Thank youuuuuuuuuuuuuuuuuuuuuuuuuuuuu❤
sameeeee
I am an o level student can I watch these videos are both igcse and o level caies area same
Hi there! These videos strictly follow the syllabus for Paper 0610. However, there maybe a lot of similarities with the syllabus you are referring to. So I would suggest to compare both syllabi and check for any additions/exclusions.
U can go with these videos I'm also having the olevel 5090 biology syllabus
Please make Chapter 17-full syllabus videos before June 8 Igcse Mcqs exam.
These videos are blessing for upcoming Igcse students also it's helpful for Year 11 students that are giving their exams.
I'm in Gcse I'm revising some concept before P4 Alternative to practical Exam
And will revise full syllabus before P1 mcqs exam
Thank you so much for taking the time to comment. The entire Chapter 17 will be out this week. Wish you all the very best for your exams! ☺️
@@IGCSEStudyBuddy❤
Low these videos very very helpful thank you ❤
Glad you like them!
This is literally the best Igcse biology channel, please make a physics channel too
Very good 😊
Thanks 😊
in which video does she cover about the type of enzymes?
great video too.... thankx
Thank you for your great explanations
You are welcome!
I have my theory exam today thank you for the biology guidance i hope i do well
All the best!
My biology exam are hovering on my head and l was sure to fail it but when l started taking lecture from your videos l knew l will get good marks
All the best!
thank you soo much i understood alot
Thank you that was so helpful 🥰
You’re welcome 😊
please continue till the last chapter
For sure! We will be putting up all chapters and also more content around the subject. Please subscribe to stay tuned.
Great !I love the explanation!
@@centric145 Thank you! ☺️ Please do share among your friends to subscribe to our channel.
love this channel
Thank you!
Thank you so so much.😁😁😁😁😃😃.
this is fr great do u do phycics lectures i need help with that
You are literally the GOAT
please do vids about igcse chemistry
Hi Ushashi, yes we are planning to cover more subjects in the future.
Awesome
what year is this for? im new to igcse...
Hi there, these videos outline the syllabus for the years 2023-2025.
@@IGCSEStudyBuddy like is it year 11 or 12?
@Red_J_Hood this might be for year 10 since I am in year 10 and I took this lesson this year but also for whoever is taking it igcse has to revise these lessons because they will be in the exam
@@Red_J_Hoodboth ten and eleven
@@Red_J_Hood igcse board exams are taken by students at the end of their grade 10. while most schools start the syllabus in grade 9, there are schools that are different, for example, some schools start the syllabus only at the start of the grade 10 academic year, or my school, for example, started the syllabus as early as the beginning of grade 8 to give students more familiarity with the course and more time to prepare. generally, all students take their igcses at the end of grade 10, regardless of when they start.
nice video
but no explanation on lock and key mechanism
Thank you for your feedback.
Just to clarify, our videos strictly adhere to the syllabus for Cambridge IGCSE Biology paper 0610. This information is clearly indicated in each video thumbnail and description.
If the content you are referring to is not available in our videos, then it is likely not required in the syllabus that our videos cover.
If you feel any area is 'missing', please compare the syllabus of your specific paper against the one our videos follow.
You can find the syllabus booklet for IGCSE Biology Paper 0610 for the years 2023-2025 on the Cambridge International website:
www.cambridgeinternational.org/programmes-and-qualifications/cambridge-igcse-biology-0610/
thanks alot
Most welcome!
Nice
😊😊😊
amazing
Thank you!
Thanks cuhh
❤😊
can i refer these videos for 0653 syllabus ?
.