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mitosis

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이 집합의 용어 (22)

  • What 3 things is cell division important for

    -organism reproduction

    -Organism growth/development

    -replacing damaged, worn out cells

  • Over production/division of cells can lead to what

    tumors/ =cancer

  • too little of cell division can lead to what

    degenerative diseases

  • What is the crease between the two cells in binary fission called

    septum

  • what are two differences between eukaryotic and prokaryotic cells/division

    euks have dna in a bound membrane(nucleus) and more gentic material than bacteria/proks

  • What is the difference between chromatin and chromosomes

    chromosomes are highly condesnsed chomatin

  • What are the double copies of a chromosome called?

    sister chomatids

  • what are sister chomatids held together by

    the centromere

  • what are the sister chomrtids refferred to as once they are separated into their own cells

    daughter chromosomes

  • What are the two mains phases of mitosis division

    Interphase and mitotic phases

  • What are the phases of interphase

    G1first Gap, S Phase, G2 Second Gap

  • what is the difference between centrioles and centrosomes

    centrioles make up a centrosome

  • what is the G1 phases

    interval phase between end of mitosis and dna replication, G1 is also the accumulating of all the required material needed to for DNA replication

  • S phase is what

    doubling of chromosomal material

  • What is the G2 phase

    interval between dna rep. and start of mitosis and checking

  • what are the four phases of mitosis

    prophase, metaphase, anaphase, telophase

  • what is happenign in prophase

    nuclear membrane disappears, chromatin condenses into chromosomes, the centrosomes move to opposite sides , microtubules form

  • what are the types of microtubules

    kinetichore microtubes, attached to the kinetichore of the chromosomes

    spindle microtubules, attatched to other spindle

  • what is happening in metaphase

    chromosomes line up in the middle along a metaphase plate

  • what is happenign in anaphase

    the kinetichore microtubules get shorter and pull apart the sister chromatids, the spindle microtubules get longer and elongate the cell

  • what is happening in telophase

    *think opposite of prophase

    chromosome decondense and duplicates separate, as cleavage furrow deepsn the cells and cytoplasm pinch apart through cytokinesis. Then two daughter cells are created* Cleavege furrow in animals, vesicles in plant cells by deposit of cell wall material

  • where are the check points in the cell cyle

    there are three,

    G1 check, G2 check, M check between meta and anaphase