I was wondering the same thing. Basically, CuSO4 can form a complex with the peptide bonds in alkaline solution. So, the NaOH is there to make the solution alkaline, and the CuSO4 is there to show the colour change (and therefore indicate a positive test) To do simple tests, you don't have to use a lot because all we're interested in is whether or not there's proteins. We're not doing the test because we need the products of the reaction
It gets taught at secondary because its taken into more detail at a level like every topic, so everything you learn in GCSE biology, A level takes it and makes sub topics from it with much more content. So the main topic gets made into 4 or 5 more topics that go more in depth and link together to make the bigger picture. Where we see the lipid emulsion test at GCSE we see the bonds, hydrolysis of bonds, products, chemical makeups involving condensation reactions, interactions with other molecules etc… At A level :)
1:57 lipids -emulsion test
These videos are extremely helpful and easy to follow. I will defo continue to use your videos for revision. Thanks 😁
Thank you! Glad it was helpful! 😊
i guess I'm kinda off topic but does anyone know of a good site to stream new tv shows online?
@Prince Ronald try FlixZone. Just search on google for it :)
Thank you soo much this lesson was so hard ,I really understood everything THANKS
You're very welcome! Glad it helped! Keep it up! 💯
Thanks a lot man ❤
This is actually helpful and explained well
Thanks! Glad it was helpful! 😊
thank so much i understand this video and it help me to
Awesome explanation!!!😉😉
Thanks! 😃 Glad you liked it!
this was really helpful and helped me understand it !
Glad it was helpful! 😊
Thanks, but how about the quantities used
best explanation!
Thanks! 💯
video was useful tks
You are welcome! Glad it was helpful!
massive walking W
for proteins, in my textbook it says that the copper (2) sulphate is very dilute (0.05%), does anyone know why?
I was wondering the same thing. Basically, CuSO4 can form a complex with the peptide bonds in alkaline solution. So, the NaOH is there to make the solution alkaline, and the CuSO4 is there to show the colour change (and therefore indicate a positive test)
To do simple tests, you don't have to use a lot because all we're interested in is whether or not there's proteins. We're not doing the test because we need the products of the reaction
@@julianaminett7654 thank you! This has helped me a lot
Is this A-level Biology because my school teaches this at secondary 2???
It gets taught at secondary because its taken into more detail at a level like every topic, so everything you learn in GCSE biology, A level takes it and makes sub topics from it with much more content. So the main topic gets made into 4 or 5 more topics that go more in depth and link together to make the bigger picture. Where we see the lipid emulsion test at GCSE we see the bonds, hydrolysis of bonds, products, chemical makeups involving condensation reactions, interactions with other molecules etc… At A level :)