bio past paper mistakes Flashcards
(8 cards)
1
Q
food test for proteins
A
buriet solution - blue to lilac
2
Q
food test for starch
A
Iodine - orange/red to blue black
3
Q
food test for sugars
A
benedict’s solution - blue to brick red
4
Q
food test for fats
A
ethanol - clear to cloudy
5
Q
why put oil over a yeast solution
A
keep oxygen out
6
Q
what does tobacco virus effect
A
chlorophyll so photosynthesis
7
Q
advantages of using own persons stem cells
A
- less chance of rejection
- adults can give consent
8
Q
how are sieve tube cells specialised for there function
A
have pores in the end of walls so dissolved sugars can move from cell to cell
