1. JELLO CELLS LAB

2. MOLECULES ARE TOO TINY TO SEE? How do we know they are there?
Change color to tell you a molecule is present
INDICATORS-
Starch + iodine =
BLACK COLOR

3. RED CABBAGE = pH indicator Tells how many H+ ions are present

4. HYDRANGEA

5. “Jello cells” 3 cm 3 cm 1 cm 1 cm 2 cm 2 cm 1 cm 2 cm 3 cm

6. Cut 3 Jello cells of different sizes
Place ALL “cells” into vinegar AT SAME TIME.
Cover with lid
Let them sit for at least 20 minutes

7. WHAT WILL HAPPEN?

8. WHAT WILL HAPPEN?

9. Remove "Jello cells" from vinegar
Cut in half
Measure the width of the PURPLE center square

10. Calculate the volume where acid diffused
BIG OUTSIDE CUBE= TOTAL VOLUME
LITTLE INSIDE CUBE= Volume diffusion didn’t reach
BIG OUTSIDE CUBE – LITTLE INSIDE CUBE = VOLUME REACHED BY DIFFUSION

11. 2 sides are: 1 X 1
4 sides are: 1 X 8
X 2
X 4

12. If having a HIGH SA/VOL RATIO gets the cell what it needs faster, WHAT WOULD BE A GOOD SHAPE TO BE?
How can you increase the surface area of a cell?

13. STRUCTURE/FUNCTION

15. Image modified from: http://www. nature

16. https://upload. wikimedia. org/wikipedia/commons/1/1a/NSRW_Root-Tip

17. https://classconnection. s3. amazonaws