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Plasma Membrane Demonstration. Pre-AP Biology Resource Manual Page 50 Biology Resource Manual Page 49. Yeast Cells in Water. Remember that yeast is a unicellular fungus. Each of the clear circles shown is an individual yeast cell. 400X. Unheated Yeast Cells & Congo Red.
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Plasma Membrane Demonstration Pre-AP Biology Resource Manual Page 50 Biology Resource Manual Page 49
Yeast Cells in Water Remember that yeast is a unicellular fungus. Each of the clear circles shown is an individual yeast cell. 400X
Unheated Yeast Cells & Congo Red Congo red is a red dye used to stain cells. Notice that the yeast cells are still clear even though they are in the red dye. 400X
Heated Yeast Cells & Congo Red The yeast cells and Congo red were heated. Notice that now the dye has penetrated the cell membrane and has dyed the entire cell red. 400X