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Applications and skills
Applications and skills

... orks.html http://www.cellsalive.com/mitosis.htm http://vcell.ndsu.nodak.edu/animations/mitosis/movie-flash.htm Understandings: • Mitosis is division of the nucleus into two genetically identical daughter nuclei • Cytokinesis occurs after mitosis and is different in plant and animal cells • Interphas ...
CELL_PARTS
CELL_PARTS

... • Holds contents of cell inside (like skin) • Keeps harmful substances out • Controls what enters and leaves • Water, oxygen, and nutrients are allowed to enter • Waste products are allowed to exit ...
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Ch4Review - Cobb Learning
Ch4Review - Cobb Learning

... ______ 8. The process in which particles move through a membrane from a region of low concentration to a region of high concentration is a. diffusion. c. active transport. b. passive transport. d. fermentation. ______ 9. What is the result of mitosis and cytokinesis? a. two identical cells c. chloro ...
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... How have organelles enabled eukaryotic cells to become successful? By comparing a bee's body mass to its wing span, it has been calculated that a bee should not be able to fly. Cell biologists have since found that the muscles which control the wings of the bee have a huge number of mitochondria. E ...
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Cellular differentiation



In developmental biology, cellular differentiation isa cell changes from one cell type to another. Most commonly this is a less specialized type becoming a more specialized type, such as during cell growth. Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types. Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover. Some differentiation occurs in response to antigen exposure. Differentiation dramatically changes a cell's size, shape, membrane potential, metabolic activity, and responsiveness to signals. These changes are largely due to highly controlled modifications in gene expression and are the study of epigenetics. With a few exceptions, cellular differentiation almost never involves a change in the DNA sequence itself. Thus, different cells can have very different physical characteristics despite having the same genome.A cell that can differentiate into all cell types of the adult organism is known as pluripotent. Such cells are called embryonic stem cells in animals and meristematic cells in higher plants. A cell that can differentiate into all cell types, including the placental tissue, is known as totipotent. In mammals, only the zygote and subsequent blastomeres are totipotent, while in plants many differentiated cells can become totipotent with simple laboratory techniques. In cytopathology, the level of cellular differentiation is used as a measure of cancer progression. ""Grade"" is a marker of how differentiated a cell in a tumor is.
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