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characterization of myogenic factors derived from a
characterization of myogenic factors derived from a

... Here we show that MCM can strongly stimulate (up to 2 fold) the proliferation rate of primary rat myoblasts and pure rat satellite cells. Interestingly, in both cases cell division and cytoplasmic growth were partially uncoupled by MCM, with a loss of 30-35% of the mean cell mass respect to control. ...
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... 2. How many cells do you think are in our body? (Be specific, “a lot” will not be accepted as an answer) 100 trillion + 3. What happens if one cell in neck, arm, liver, bone, or stomach dies? My body will recognize that I need to create an identical cell to replace the cell I lost. 4. What process d ...
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... 1. What is the function of the nucleus? 2. What is the nuclear envelope and what is it composed of? 3. How do materials like RNA move out of the nucleus? 4. _____________ are manufactured in the ______________ , a dark, dense region within the nucleus. 5. What important molecule does the nucleus con ...
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Cells - Tuckahoe Common School District

... • In multicellular organisms, cells not only complete their own life activities, but also perform a function that contributes to the life of the organism. • Within multicellular organisms there is division of labor or specialization. – The work of keeping the organism alive is divided up among diffe ...
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Cell cycle



The cell cycle or cell-division cycle is the series of events that take place in a cell leading to its division and duplication (replication) that produces two daughter cells. In prokaryotes which lack a cell nucleus, the cell cycle occurs via a process termed binary fission. In cells with a nucleus, as in eukaryotes, the cell cycle can be divided into three periods: interphase, the mitotic (M) phase, and cytokinesis. During interphase, the cell grows, accumulating nutrients needed for mitosis, preparing it for cell division and duplicating its DNA. During the mitotic phase, the cell splits itself into two distinct daughter cells. During the final stage, cytokinesis, the new cell is completely divided. To ensure the proper division of the cell, there are control mechanisms known as cell cycle checkpoints.The cell-division cycle is a vital process by which a single-celled fertilized egg develops into a mature organism, as well as the process by which hair, skin, blood cells, and some internal organs are renewed. After cell division, each of the daughter cells begin the interphase of a new cycle. Although the various stages of interphase are not usually morphologically distinguishable, each phase of the cell cycle has a distinct set of specialized biochemical processes that prepare the cell for initiation of cell division.
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