help please

[carlito-cool55]

a student heats up a test tube containing large amount of protien and biuret reagent. She notices a colour change from violet to blue. Explain why heating causes a colour change.

[Locus]

Becouse there is chemical reaction at the hight temperuture, and reagent bind to protein, that give new color (by the way - chang from violet to blue is a slight color change, becose those colorse is close to one another at the spectrum)

[bio_nerd101]

i think first you should stop calling your self cool and just stick to your name....second.....the color changed becuase of what she mxed...duh...

[MrMistery]

Everyone is entitled to their own nickname as long as it respects the forum rules. And really now, ghandi once said "Only speak if you can improve on the silence"

[Dr.Stein]

i think first you should stop calling your self cool and just stick to your name....second.....the color changed becuase of what she mxed...duh...

This is harsh!

[bio_nerd101]

okay....i know you guys are saying that to me but come on.....sorry!

[Darby]

I use biuret regularly and never use heat to facilitate the reaction - is that weird?