12. app. edmentum. com/coun 3 m
Course Activity: Yeast Fermentation
bottle 6 1 cup of hot water, 1 packet yeast, 2 tablespoons sugar
3. Add the yeast to the water in each bottle. Swirl the bottles until the yeast dissolves.
4. Put balloons over the necks of the bottles that do not contain sugar (bottles 1, 3, and 5).
5. Add the sugar to bottles 2, 4, and 6. Swirl each bottle, and put a balloon on its neck.
6. Look at the bottles every 5 minutes for 20 minutes. While you are waiting, answer part A below.
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With the description of the different cell walls, membranes, and associated proteins set in the students' minds, you now need to introduce them to the idea that the cell wall can also act as a foundation to build things upon. bacterial appendages require a strong foundation that will offer the support needed to move and function in a dynamic world. for example, flagella are long, whiplike protein structures that are used by many gram-positive and gram-negative bacteria for locomotion. in order to function effectively, a flagellum must be firmly anchored to the cell wall. how will you be able to get across the idea that the peptidoglycan cell wall is strong enough to support such a mechanism? with a protein rod that passes through the cell wall and protein rings used to anchor it in the membranes, these basal bodies are the rudimentary biological motors that use atp power to spin the hook and the flagella attached to it. bacterial flagella have a biological motor that spins within the cell wall and is powered by atp. this allows the flagella to spin in a whiplike motion to propel the bacterium.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.