Chapter 2.3b - Proteins: Globular vs Fibrous | Cambridge A-Level 9700 Biology

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  • เผยแพร่เมื่อ 11 ธ.ค. 2024

ความคิดเห็น • 21

  • @nelanelinelo
    @nelanelinelo หลายเดือนก่อน +4

    how i wish i could give the entire world to u :((, I LOVE UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU

  • @FizaFarhan-x1y
    @FizaFarhan-x1y 3 วันที่ผ่านมา

    you teach so well,may god bless you for your efforts:)

  • @NoxNorlynx
    @NoxNorlynx 2 ปีที่แล้ว +1

    Your videos are very very helpful, thank you so much for this! :)

  • @cloudynights3
    @cloudynights3 8 หลายเดือนก่อน

    Thank you so much!!. I couldnt understand the difference between the tertiary and quaternary structure

    • @behlogy
      @behlogy  8 หลายเดือนก่อน

      Quaternary just means more than 1 polypeptide chain is involved! Hope it's clearer now

  • @serahaleyabastin
    @serahaleyabastin 2 ปีที่แล้ว

    Thank you mam
    Your hard work for making this video is paying of 😁

  • @ocean1955
    @ocean1955 7 หลายเดือนก่อน

    The textbook says that the 3 polypeptide chains of collagen molecule are held by hydrogen bonds AND some covalent bonds. Do we need to remember that it's also held by covalent bonds or hydrogen bonds is enough? Asking cuz you haven't mentioned covalent bonds, you've only mentioned hydrogen bonds. And how is collagen a quaternary structure when it has 3 polypeptide chains and not 4? Thanks!

    • @behlogy
      @behlogy  7 หลายเดือนก่อน +2

      Pretty sure i talked about both H bonds and covalent cross-linkages (aka bonds) for collagen! Perhaps you may wanna watch again....
      Quarternary structure is defined as two or more polypeptides. So any protein with more than 1 polypeptide will be considered quarternary

  • @elename8361
    @elename8361 11 หลายเดือนก่อน

    would you need to explain why biuret turns purple ?

    • @behlogy
      @behlogy  11 หลายเดือนก่อน +1

      Yep

  • @shakeelarehmat7610
    @shakeelarehmat7610 ปีที่แล้ว

    maam i have a question
    is it collagen molecules forming covalent cross links b/w R groups of GLYCINE or LYSINE?kindly can you please clarify?

    • @behlogy
      @behlogy  ปีที่แล้ว +1

      Covalent bonds, aka disulphide bonds are formed btwn cysteine amino acids! Eventho it's not in the common trio of amino acids, they do occasionally occur

  • @tasnimhasem1474
    @tasnimhasem1474 ปีที่แล้ว

    hello can you please tell me what are the structures i need to learn to draw from this chapter, since i am not that good in chemistry i can only identify most

    • @behlogy
      @behlogy  ปีที่แล้ว +5

      Specific structure: Alpha glucose, beta glucose
      General structure: amino acid, glycerol, fatty acids
      Structure after condensation / hydrolysis (you need to know how to join/break up the monomers) : disaccharide, dipeptide, triglycerides... All polymers too. The trick here is to figure out how the functional groups look like before/after hydrolysis.
      You need to be able to recognise all of the ones mentioned on this video.

    • @tasnimhasem1474
      @tasnimhasem1474 ปีที่แล้ว

      @@behlogy you’re the kindesttt :)))

  • @skylex02
    @skylex02 ปีที่แล้ว

    PLEASE ENABLE DOWNLOADS OF VIDEOS PLEEEEEEEEEEEEEEEEEEEASEEEEEEEEEEEEE. T^T 😭😭😭😭

    • @behlogy
      @behlogy  ปีที่แล้ว

      I did. But i think the downloadable option is only available for TH-cam Premium members?

    • @skylex02
      @skylex02 ปีที่แล้ว

      @@behlogy Oh OK thank you.

  • @GKP_TV79
    @GKP_TV79 2 ปีที่แล้ว

    collagen part ,didn't understand

    • @behlogy
      @behlogy  2 ปีที่แล้ว

      Which part? Sometimes pausing the video and reading through the notes may help.

  • @GKP_TV79
    @GKP_TV79 2 ปีที่แล้ว

    collagen part ,didn't understand