B1 | key concepts Flashcards
1
Q
what does benedict solution test for?
A
reducing sugars
2
Q
what does iodine test for?
A
starch
3
Q
what does biuret solution test for?
A
proteins
4
Q
what does ethanol test for?
A
fats
5
Q
what is benedicts initial colour?
A
blue
6
Q
what is benedicts colour change?
A
brick red
7
Q
what is iodine initial colour?
A
brown
8
Q
what is iodine colour change?
A
blue-black
9
Q
what is biuret initial colour?
A
blue
10
Q
what is biuret colour change?
A
purple
11
Q
what is ethanol initial colour?
A
clear
12
Q
what is ethanol colour change?
A
cloudy
13
Q
how can a magnification of 400x be obtained using the lenses on a light microscope?
A
combine 40x objective lens with 10x eye piece lens
14
Q
conversions:
A
mm to μm = x1000
mm to nm = x100 000 000
μm to nm = x1000
