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Anatomy chapter 3
Question | Answer |
---|---|
Two types of cell division | Mitosis Meiosis |
Mitosis | Cell division of somatic cells that produces two daughter cells with identical genetic information, 46 chromosomes |
Meiosis | Cell division that gives rise to sex cells, produces cells with half the number |
Chromatin | Becomes a chromasome |
Chromosomes | Tightly coiled rods of chromatin |
Chromatid | Each chromosome contains two |
Centromere | The attachment point of chromatids |
Centrioles | Divide and move to opposite sides of the cell |
spindle fibers | Microtubules projecting from Centrioles that chromosomes attach |
Interphase | Cell growth, genetic material duplication |
Phases of interphase | G1 S G2 |
Prophase | Begins cell division |
Metaphase | Duplicated chromosomes move to middle |
Anaphase | Chromosomes are pulled apart by microtubules |
Telophase | Chromosomes elongate and form chromosome threads |
Cytokinesis | Two new cells are formed |
Cell division is controlled by | The DNA of the cell External controls like hormone and growth factors |
Cans begins at the ______ level | Cellular |
Tumor | Abnormal growth of cells |
Benign tumors | Remains in place |
Malignant tumors | Cencerous |