The lysosomes and food vacuoles help by combining as food is being digested in the body. The vacuoles form a looping path through the cell. The undigested components of food vacuoles are released when the vacuoles fuse with a specialized region of the plasma membrane. The plasma membrane functions as an cytoproct.
2 half-lives have elapsed to yield 125 atom of the original sample
Half of the amount of the radioisotope present at any given time will undergo spontaneous disintegration during the succeeding 5730 years. In other words , after 5730 years ,only half of the original amount of 14 c remains in a sample of organic material . Imagine that you start out with 100 grams of carbon 14 . The half -life is the time it takes for half of given amount of isotope to decay .
learn more about how many half- lives have lapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N- 14
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Answer:
Evolution of cells.
Explanation:
The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.