'Chromosomes uncoil' diaporamas de présentation

Cells

Cells. Chapter 3. I. Overview Cell Membrane Cytoplasm Cytosol Organelles Nonmembranous : Cytoskeleton, Microvilli , Centrioles , Cilia, Flagella, Ribosomes Membranous: Mitochondria, Nucleus, Endoplasmic Reticulum, Golgi Apparatus, Lysosomes , Peroxisomes , Vesicles .

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Chapter 2: Cells and Cell Division

Chapter 2: Cells and Cell Division. By the completion of this chapter, you should have an understanding of: The structure and organization of cells in higher organisms Chromosomes as cellular structures that carry genetic information The parts of the cell cycle The stages of mitosis

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CELL CYLCE

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CELL DIVISION mitosis & meiosis

CELL DIVISION mitosis & meiosis. Forms of DNA When the cell is NOT dividing = chromatin When the cell IS dividing = chromosome. Monovalent chromosome. Bivalent chromosome. Why do cells divide? Replacement - cells wear out & die Repair - tissues can be damaged by injury or infection

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CELL DIVISION mitosis & meiosis

CELL DIVISION mitosis & meiosis. Forms of DNA When the cell is NOT dividing = chromatin When the cell IS dividing = chromosome. Monovalent chromosome. Bivalent chromosome. Why do cells divide? Replacement - cells wear out & die Repair - tissues can be damaged by injury or infection

251 views • 18 slides

CELL DIVISION mitosis & meiosis

CELL DIVISION mitosis & meiosis. Forms of DNA When the cell is NOT dividing = chromatin When the cell IS dividing = chromosome. Monovalent chromosome. Bivalent chromosome. Why do cells divide? Replacement - cells wear out & die Repair - tissues can be damaged by injury or infection

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Mitosis

Mitosis. Mitosis. = division of the nucleus and its contents - discovered by Walther Flemming in 1882. Phases of Mitosis. 1) Prophase. - DNA coils to become chromosomes - nuclear membrane disappears - microtubules called spindle fibers grow from centrioles to center of cell. Prophase.

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