Answer:
Perhaps the most amazing thing about mitosis is its precision, a feature that has intrigued biologists since Walther Flemming first described chromosomes in the late 1800s (Paweletz, 2001). Although Flemming was able to correctly deduce the sequence of events in mitosis, this sequence could not be experimentally verified for several decades, until advances in light microscopy made it possible to observe chromosome movements in living cells. Researchers now know that mitosis is a highly regulated process involving hundreds of different cellular proteins. The dynamic nature of mitosis is best appreciated when this process is viewed in living cells.
Explanation:
Answer:
Endosymbiotic theory deals with the origin of eukaryotes from the prokaryotes through evolution
Explanation:
Endosymbiotic theory states that eukaryotic organelles such as mitochondria, chloroplast are generally evolved from free living bacteria.Mitochondria is originated from proteobacteria and chloroplast is generated from cyanobacteria through symbiosis.
Both mitochondria and chloroplast contain double strand circular DNA and also have their own protein synthesis machinery but most of the mitochondrial proteins are synthesized within nucleus and then transported to the mitochondria.
The answer would be D. Hope this helps!
option C is correct........
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Always point the open end of the tube away from all people because the chemical is dangerous for human health and skin.
If we heat a substance or chemical in a test tube, we should hold it away from people because may be it can explode and the chemical split on the body that cause serious problems in people. We have to handle laboratory procedures very carefully because the chemicals are not good for health and can cause serious diseases in humans and can damaged the skin very badly so we can conclude that the open end of the test tube should be placed away from the people.
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