B D
C
[2]
C
2.4
a Name parts A and D.
b
Give the letters of two labelled parts where protein digestion takes place.
Give the letter of one labelled part where digested nutrients are absorbed.
Rhianna tested two different foods using iodine solution and Benedict's solution.
These were her results.
spaghetti - went blue-black with iodine solution, went blue with
Benedict's solution
honey - went orange-brown with iodine solution, turned brick red
with Benedict's solution
a Describe how Rhianna tested the foods with Benedict's solution.
b Construct a results table and fill it in to show Rhianna's results clearly.
What conclusions can Rhianna make from her results?
[2]
[3]
[4]
C
2.5
Nakula investigated the effect of heat on amylase. Amylase is an enzyme
that makes starch molecules break down into sugar molecules.
• Nakula put some amylase solution into two boiling tubes,
P
Q