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The life of a eukaryotic cell can be explained as a cell cycle. Mitosis and cell division happens in the M phase that lasts for only about 1 h. This is followed by the G1 phase where G stand for gap, then the S phase S stand for synthesis, during that time the chromosomal DNA is replicated and at last the G2 phase in that the cells prepare for mitosis. Eukaryotic cells in culture classically have cell cycle times of 16-24 h but the cell cycle time can be much longer than > 100 days for some cells in a multicellular organism. Most of the variation in cell cycle times occurs by differences in the length of the G1 phase. Some cells in vivo like neurons, stop dividing totally and are said to be quiescent locked in a G0 phase.
Q. What do you mean by Primary Metabolites ? As the name indicates, primary metabolites are molecules involved in vital metabolic pathways. They are of universal occurrence and
Explain the Characteristics of Cancer? The important characteristics of cancer are excessive cellular multiplication, invasiveness and autonomy. The active process of invasion
Motor nerves : Nerves which carry impulses from brain or spinal cord to effector organs are called efferent or motor nerves. Stimulation of motor nerves makes the muscles to contr
STERNU M - It is long, naroow, flat vertical bone in the middle of the front wall of the chest. 15 cms long. It is dagger shaped having manubrium body & xiphoid process.
What role did the appearance of the ozone layer play in the evolution of early life on Earth? Ultraviolet radiation from the sun damages DNA, but the development of the ozone l
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Evaluating the degree of urinary obstruction: D.P. is a 63-year-old man who has been experiencing progressive difficulty with initiating the urinary stream and frequently needs to
Describe how a phagocyte destroys bacteria. The phagocyte forms a pouch in its cell membrane and engulfs bacteria in the pouch. It then pinches off the pouch to produce a vesi
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Define Placental Transfer of Nutrients? The placenta is n transitory structure developing during pregnancy and lies implanted on the uterine wall. It is connected with the foet
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