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26 Cards in this Set
- Front
- Back
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true or false: cell division are highly regulated?
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true
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true or false: cell division requires partitioning of organelles?
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true
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how are abundant organelles partition?
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many in cytoplasm so cleavage causes some of them to leave to daughter cells
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how are chloroplasts &mitochondria partition?
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are ancient captured bacteria that retain own fusion mechanism
so split like bacteria do and then come back together after mitosis |
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how are golgi & ER paritition?
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break into vesicles then disperse (act like abundant organelles) or have motor to follow microtubles into daughter cells
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how is the centriole paritition?
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replicate once per cell cycle
template own duplication - need a centriole to ever make a new centriole |
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what's the G1 phase of the eukaryote cell cycle?
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executive decision phase
-big enough? -sufficient nutrient? -growth factors from other cells? |
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what happen to cell in S phase?
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nuclear DNA replication
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what do cell do in M phase?
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mitosis ->breaking of nucleus - cell division
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What occur in G2 phase?
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quality control phase
-DNA replication? -kinetochore achieved bipolar spindle attachments? |
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what is the state G0?
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resting state, still metabolizing/functioning but not making more of itself
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who solved the replication of the telomeres ends bec DNA replication cannot replicate this?
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Carol Creider & Liz Blackbury (2009)
telmorayase - specialize DNA polymerase that synthesizes telomerse end |
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true/false: cells only have on origin of replication?
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false, cells have many but as cells slow down -> have less -> regulation
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what are kinetochore?
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proteins at the centrosomes (point on chromosome) that attach to spindles
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what diff about the chrom in bacteria v in eukaryote?
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bacteria - 1 chrom + plasmids
eukaryote - multiple diff linear chrom |
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what's on the chromosome of bacteria?
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1 circular chrom + plasmids (have gene that are not essential to life of bacteria)
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what's on the chrom of eukaryote?
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multiple diff linear chrom
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diploidy?
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number of complete set of chrom (N)
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diploid?
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two complete set of chrom
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haploid?
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one complete set of chrom
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what's the diff between C and N value?
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C - amount of DNA (no specific unit)
N - number of chromosomes |
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what's homologous chrom?
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similar chromosomes that make up one trait but not necessary identical
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who discovered the cohesion along the sister chromatids in the early M phase?
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Dough Koshland
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true/false: the pair of sister chromatids are two different chromosome?
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false. pair of sister chromatids make up the chromosome, they are identicl except for newly arising mutations
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which end of microtubles grow and why?
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the + end because more GTP (source of energy)
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what are the experiments that research on what moves chrom on spindle?
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1. + motor proteins (use ATP) walk to + end ->force elongation of spindle causing the cell to elongate
2. dam ring - ring of proteins that is around the end --> connect the chrom to the end of microtuble & may control the stablity of the + end of microtubles |
