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34 Cards in this Set
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- 3rd side (hint)
Mitotic |
Division of nucleus = mitosis cytokinesis 4 |
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4 stages of cell cycle |
G1= growth S stage= synthesis G2= growth M stage= mitotic cell |
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Cell cycle |
Serious of events in a eukaryotic cell between one cell division and the next |
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Chromosomes come in: |
Pairs ... 2 of each kind that look alike. |
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Chromosomes come in: |
Pairs ... 2 of each kind that look alike. |
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Must be present for cell to proceed in cell cycle.. |
1. From the G2 stage to the M stage
2. From G1 stage to S stage |
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Apoptosis = |
Programmed cell death |
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Cells have enzymes ______ required for apoptosis to occur. |
Caspases |
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Centrosome = |
Forms centrioles |
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Phases of Mitosis: |
1. Prophase 2. Prometaphase 3. Metaphase 4. Anaphase 5. Telophase |
PPMAT |
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Prophase : |
Chromatin has condensed
Nucleus disappears
Nuclear envelope disintegrates
Spindle begins to assemble |
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Prometaphase: |
Kinetochores (anchors) develop centromere.... These attach sister chromatids to spindle fibers. |
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Metaphase: |
Chromosomes align in the middle of the cell |
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Anaphase : |
Sister chromatids split
Each half is pulled to the opposite poles |
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Telophase: |
Spindle disappears
New nuclear envelopes forms
Chromosomes become diffuse chromatin again
Nucleolus appears in each daughter nucleus |
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Multicellular organisms cell division = |
1.Growth 2.Repair |
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Two major functions of cell division : |
1.Maintain ideal: "surface are to volume ratio"
2.Transfer "complete" sets of chromosomes |
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When a eukaryotic cell is not dividing .. The DNA is a tangled mess of: |
Chromatin |
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Before nuclear division : Chromatin.... |
1.replicates (interphase) 2.condenses (early prophase) into chromosomes |
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Each species has a certain.... |
# of chromosomes |
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In humans the number of chromosomes= |
46 |
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M stage= Mitotic Stage cell division stage that includes: |
1. mitosis (nuclear division) 2. Cytokinesis (cytoplasm division) ... Division of rest of cell |
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Cell cycle control.. Internal signal protein= |
Cyclin |
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Levels of this protein (Cyclin) ________ & _______ as a cell cycle continues.. |
Increase & decrese |
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Cytokinesis |
Begins in anaphase
Continues in telophase
Completion at the following interphase |
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Cytokinesis |
Begins in anaphase
Continues in telophase
Completion at the following interphase |
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Prokaryotic cell division (bacteria) they lack a _______ |
Nucleus |
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Cytokinesis |
Begins in anaphase
Continues in telophase
Completion at the following interphase |
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Prokaryotic cell division (bacteria) they lack a _______ |
Nucleus |
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Prokaryotic cell division lack other ..... |
Membraneous organelles |
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Cytokinesis |
Begins in anaphase
Continues in telophase
Completion at the following interphase |
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Prokaryotic cell division (bacteria) they lack a _______ |
Nucleus |
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Prokaryotic cell division lack other ..... |
Membraneous organelles |
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Cancer = |
Mitosis gone crazy!!!
Growth disorder that results from the mutation of genes regulating the cell cycle |
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