Diffusion Through A Membrane Flashcards
1
Q
Dialysis
A
Tube (selective barrier/size)
2
Q
Starch
A
Large molecule
3
Q
Glucose
A
Small molecule
4
Q
Iodine
A
Indicator for starch, small, can diffuse easily
5
Q
Benedict Solution
A
Indicator for glucose + heat, large, can’t diffuse solution
6
Q
Step 1
A
Add glucose + 5 drops of starch into a dialysis tube, then tie both ends closed
7
Q
Step 2
A
Place dialysis tube into beaker and fill with water
8
Q
Step 3
A
Add 10 drops of iodine into beaker and 10 drops of Benedict into beaker
9
Q
Iodine + starch
A
Blackish purple color
10
Q
Benedict + glucose w/ heat
A
Orange color change
