Endospore staining is used to stain the spore which reside inside the microorganisms, and unlike the exospores, are not present outside the microbial cells. The endospore stain penetrates the microbial cells, and then stain the endospore.
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There are 7800 meters in 7.8 km
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A solid rock becomes soil when it breaks down and combines with water, air, and organic matter.
The experiment conducted by Paul was not a waste of his time and resources even though he could not accomplish the experiment he initially prepared to conduct. The reluctance of the penguins to eat burgers even though they were starving and losing weight pointed towards the fact that they do not find junk food appealing. It could be concluded from their reluctance that they will eat only their normal diet rather than something they have never eaten before.
Mitochondria important for the cell that can't survive without it but blood cell is an exception. Blood is a tissue in animals so RBCs are animal cells and don't have mitochondria