RP8- EFFECT OF NH4[OH] ON TIME TAKEN FOR CHLOROPLASTS TO DECOLOURISE DCPIP

Question 1

why do you not put the leaf stalk in the blender

Answer 1

tough material wont be cut up by blender

Question 2

why do use a blender

Answer 2

to break open cells and release chloroplasts

Question 3

why do you wrap a tube in foil

Answer 3

so light cant pass through therefore showing effect is due to chloroplasts absorbing light energy

Question 4

one tube just has dcpip water and isolation medium. How is this acting as a control

Answer 4

to show that colour change of dcpip is not due to other factor such as isolation medium
shows effect of colour change by chloroplasts