Enzymes - GCSE Biology (9-1)

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  • čas přidán 20. 10. 2017
  • Download the perfect PowerPoint for this topic here: www.mrexham.com/igcse_biology...
    2.10 Understand the role of enzymes as biological catalysts in metabolic reactions.
    2.11 Understand how temperature changes can affect enzyme function, including changes to the shape of active site.
    2.12 Practical: investigate how enzyme activity can be affected by changes in temperature.
    2.13 Understand how enzyme function can be affected by changes in pH altering the active site.
    2.14B Practical: investigate how enzyme activity can be affected by changes in pH.

Komentáře • 44

  • @bleh2228
    @bleh2228 Před 4 lety +31

    thank you so much, this really helped, I have my biology topic test next Monday

  • @angels7901
    @angels7901 Před 3 lety +4

    I am in Year 8, in Dubai, I actually learn this stuff in my class and I completely forgot about my biology exam until today, the night before the exam, Thank You Sooooooooo Much

  • @yukinekomimi8458
    @yukinekomimi8458 Před 4 lety +16

    Thanks so much all the way from Dubai! 💓 My test is tomorrow and your video was so helpful for last-minute revision, I will definitely recommend it to my family!

  • @naomitiyan7438
    @naomitiyan7438 Před 4 lety +12

    You are really a life saver i have my biology exam in less than a week and this made me understand so much

  • @eneshsiabatcho8663
    @eneshsiabatcho8663 Před 5 lety +30

    He explained them so well....that was a great job and it was super useful!

  • @gsmshew1101
    @gsmshew1101 Před 2 lety +2

    Week 3 of learning IGCSE biology. The CIE exam I mentioned last week was easily done. Back to edexcel:)

  • @jameskelliher
    @jameskelliher Před 4 lety +5

    Video appreciated. Got a Biology Assessment coming up. Thank you!

  • @danielajaikumar7455
    @danielajaikumar7455 Před 5 lety +9

    Thank you so much this is really great for my exams

  • @piaconti6510
    @piaconti6510 Před 6 lety +12

    Very useful, thank you!

  • @htanid599
    @htanid599 Před 3 lety +3

    great for last minute cramming up. iou 1 pass, thanks Mr Exham :)

  • @iiB1aZ3
    @iiB1aZ3 Před 2 lety +1

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  • @arhumzia8816
    @arhumzia8816 Před 4 lety +5

    life saver thanks got exam next week

  • @lucy4576
    @lucy4576 Před 5 lety +5

    Thanks again. You are awesome. 😀

  • @DaDoodler25
    @DaDoodler25 Před 2 lety +1

    Thanks, this helped with my Bio Half Yearly!

  • @Asma_Atiq
    @Asma_Atiq Před 4 lety +1

    Thanks alot mr exham it really helped me

  • @Coliseum-om3no
    @Coliseum-om3no Před 3 lety +2

    wow this is an amazing video i have understood everything very well thank you so much

  • @sseo.won__4359
    @sseo.won__4359 Před 4 lety +2

    how does enzymes in root cells synthesis starch?

  • @saeedalshehhi4947
    @saeedalshehhi4947 Před 3 lety +1

    it really helped me alot thank you soomuch❤️

  • @juliahill5528
    @juliahill5528 Před 3 lety +2

    very useful thank you

  • @charlottenakimbugwe9260
    @charlottenakimbugwe9260 Před 2 lety +1

    Thank you very much....

  • @bille114mb
    @bille114mb Před 2 lety +1

    Thank you very much

  • @benstorey8085
    @benstorey8085 Před 4 lety +2

    I’m confused is it the enzyme itself that breaks the substrate down or does it just speed up the break down of the substance

    • @pukichox5686
      @pukichox5686 Před 4 lety +2

      Enzyme speeds up the break down of enzymes. Enzymes will still be breaking down, but enzymes make it break down faster. Otherwise, without enzymes, it will break down too slowly and you will die

    • @neekhildeeljore3243
      @neekhildeeljore3243 Před 4 lety

      Enzymes break it down thus increasing s.a for higher rate of reaction

    • @benstorey8085
      @benstorey8085 Před 4 lety

      NEEKHIL Deeljore I swear the help the breakdown not break it down themselves

  • @spicyfajita7636
    @spicyfajita7636 Před 4 lety +2

    thanks

  • @seth_the_grower3745
    @seth_the_grower3745 Před 2 lety

    cheers bruv

  • @panankosimpofu8816
    @panankosimpofu8816 Před 6 měsíci

  • @Banana_queen17
    @Banana_queen17 Před 3 lety +2

    2020 preparing for exam lol

  • @flashstar1234
    @flashstar1234 Před 3 lety +1

    You made this video to make me suffer in biology class

  • @FeliEt
    @FeliEt Před rokem

    I dont understand nothing mr exam

  • @alexsimon1473
    @alexsimon1473 Před 3 lety +3

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  • @Carlos.Solorzano
    @Carlos.Solorzano Před rokem +1

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  • @itzadsco133
    @itzadsco133 Před 3 lety +1

    thanks