june 2019- paper 1 Flashcards
1
Q
sign of a non-competitive inhibitor
A
high substrate concentration not impacting lipase activity
2
Q
why is biodiversity important in farms?
A
increases insect population for pollination/increases population of prey so pest population is lowered
3
Q
5 important properties of water
A
- cohesion- can form transpiration stream
- high SHC- buffers temp. changes
- high latent heat of vaporisation- cooling effect when sweating
- common solvent, so many things can dissolve in it- useful for transport in cells
- common metabolite, e.g. for hydrolysis
4
Q
lipid test
A
add ethanol and mix
white emulsion
5
Q
non-reducing sugar test
A
negative for reducing sugar
boil with acid and neutralise
add benedicts- brick red ppt
