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Natural selection is such a powerful force in evolution because cells with even a small growth advantage quickly outgrow their competitors. To illustrate this process, consider a bacterial culture that contains 106 (1,000,000) cells that double every 64 min. One cell acquires a mutation that enable it and its progeny to divide with a generation time of only 30 min. Assuming there is nothing to limit the growth of the culture (e.g. unlimited food supply) and no cell death, how long should it take for the mutant cells to overtake the culture? Give your rounded answers in minutes (min). The number of cells N in the culture at time t is given by N=N02t/G where N0 is the number of cells at time zero and G is the generation
Nutrition, Feeding, Digestion All organisms require a fairly steady supply of nutrient materials from the environment to obtain energy in order to stay alive. The animals are
Q. Explain threaded implants? Cylindrical non-threaded implants poorly distribute compressive forces and generate shears forces that may fragment and break the bone surrounding
Polymorphism in Lysosomes Polymorphism, i.e. existence of a structure in more than one form, is an important feature of lysosomes. Several different forms of lysosomes have been
Explain Inhibition of cancer cell proliferation and growth? Vitamin D diminishes proliferation of abnormal intestinal, lymphatic, mammary and skeletal cells and provides a pote
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labelled diagram of male and female cockroach with difference between them
Specific Organization The body of all living things, no matter how different in size or appearance, is composed of cells. Viruses are of course an exception. The study of cell
Explain herbicide tolerant crops Candidates who reached the scholarship standard demonstrated a wide general knowledge of the living world to which they could relate biologi
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