Nucleus and Cell Division
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| Parts of nucleus | show 🗑
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| Have no nucleus. | show 🗑
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| show | Skeletal muscle cells.
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| nucleoli | show 🗑
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| Genetic info organization. Humans? | show 🗑
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| Name for total genetic info carried in a cell or an organism. When was human one mapped? | show 🗑
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| How are genes expressed? | show 🗑
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| In what form is genetic info stored? | show 🗑
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| show | mRNA directs protein synthesis
rRNA hold info for making ribosomes (joins with ribosomal proteins to do so)
tRNA binds to amino acids to hold in place on a ribosome until needed for protein synthesis.
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| show | DNA Cytocine with RNA Guanine
DNA Guanine with RNA cytocine
DNA adenine with RNA uracil
DNA thymine with RNA adenine
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| tRNA | show 🗑
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| show | messanger RNA directs protein synthesis
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| show | ribosomal RNA holds info for making ribosomes and binds with ribosomal proteins to make ribosomes (in nucleoli)
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| Reproductive Cell Division | show 🗑
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| show | Mitosis (nuclear division) + Cytokinesis (cytoplasmic division). Cell's 46 chromosomes copied and remain the same number in the 2 resulting cells.
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| Why do somatic cells divide? | show 🗑
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| show | dividing of cytoplasm
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| show | Always active and nondividing. Never enter interphase. Said to be in G zero. G = gap.
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| show | Replication of DNA and many organelles (thus a high metabolic rate during this phase).
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| Prophase | show 🗑
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| Metaphase | show 🗑
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| show | Material moves toward the poles and a cleavage furrow begins to show (=cytokinesis begins).
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| show | Cleavage furrow.
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| Telophase | show 🗑
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| Somatic cell division stages | show 🗑
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| Reproductive cell division stages | show 🗑
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| show | 1.Free radicles 2. Cell genetically programmed to replicate only so many times 3. Autoimmune responses 4. Telomere destruction and resulting damage to chromosomes 5. Environmental Factors (foods, water, air radiation... cancer, cell damage....)
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| Necrosis | show 🗑
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| show | programmed cell death (as embryo)
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