biological molecules (tests) Flashcards
1
Q
what is the benedict’s test used for
A
reducing sugars
2
Q
what needs to happen for benedict’s solution to work on non reducing sugars
A
boiled in dilute hcl acid
3
Q
what is a positive result indicated by
A
copper 2 ions (blue) turning into copper one ions (red) the more red the new solution is the more sugar concentration
4
Q
what is iodine used for
A
starch
5
Q
what is a positive result indicated by
A
a colour change from brown to blue/black
6
Q
how are lipids identified
A
the emulsion test
7
Q
how are the lipids dissolved
A
in ethanol as it is more polar allowing the lipids to dissolve inside
8
Q
what is biuret reagent used for
A
protein identification
