JELLO CELLS LAB.

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Presentation transcript:

JELLO CELLS LAB

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

RED CABBAGE = pH indicator Tells how many H+ ions are present http://healthyeating.sfgate.com/DM-Resize/photos.demandstudios.com/12/222/fotolia_6065560_XS.jpg?w=442&h=442&keep_ratio=1 http://interactions.iciq.es/divulgaciocientifica/files/2012/08/Escala-de-pH1-e1345716450115.png

HYDRANGEA http://cdn.endlesssummerblooms.com/media/wysiwyg/es/design-and-grow/planting-and-care/planting-and-care-colorme.jpg

“Jello cells” 3 cm 3 cm 1 cm 1 cm 2 cm 2 cm 1 cm 2 cm 3 cm http://www.biologyjunction.com/images/clip01351.jpg

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

WHAT WILL HAPPEN?

WHAT WILL HAPPEN?

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

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

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

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?

STRUCTURE/FUNCTION http://www.telomeretesting.net/telomeres-image-nasa.jpg

http://www.lhsc.on.ca/_images/Genetics/mitochondrion_000.jpg

Image modified from: http://www. nature

https://upload. wikimedia. org/wikipedia/commons/1/1a/NSRW_Root-Tip https://upload.wikimedia.org/wikipedia/commons/1/1a/NSRW_Root-Tip.png http://www.nps.gov/parkhistory/online_books/chic/barker-jameson/images/fig13.jpg http://www.riverpartners.org/img/riparian-ecology/root-double-diagram_600.jpg

https://classconnection. s3. amazonaws https://classconnection.s3.amazonaws.com/1444/flashcards/678763/jpg/smooth-muscle.jpg https://universalchangegroup.files.wordpress.com/2014/09/muscle-cells.jpg

http://i.ytimg.com/vi/j03HTAbjsWw/hqdefault.jpg https://kin450-neurophysiology.wikispaces.com/file/view/neuronpicusethis.jpg/141318041/neuronpicusethis.jpg

http://www.microscopy-uk.org.uk/mag/imgapr08/image007.jpg http://wps.aw.com/wps/media/tmp/labeling/2807010_dyn.jpg