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AP Biology chapter 12 Flashcards

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8000602688binary fissionform of asexual reproduction and cell division used by all prokaryotes (bacteria and archaebacteria) and some organelles within eukaryotic organisms0
8000602689stages of the cell cycleG1, S, G2, M1
8000602690G1 Phasecell prepares itself for synthesis stage of cycle, making sure it has all the necessary raw materials for DNA synthesis2
8000602691S PhaseDNA is copied3
8000602692G2 Phasecell prepares itself for mitosis and or meiosis, making sure it has all materials needed4
8000602693M Phasemitotic phase; cell separates into two new cells5
8000602694Mitosisthe cell takes the second copy of DNA made during the S phase and divides it equally between two cells6
8000602695Stages of MitosisProphase, Prometaphase, Metaphase, Anaphase, Telophase, Cytokinesis7
8000602696Prophasenucleus and nucleolus disappear; chromosomes appear as two identical, connected sister chromatids. Mitotic spindle begins to form. In animal cells, centrioles move to opposite poles of cell8
8000602697Prometaphasesome spindle microtubules attach to the kinetochores of chromosomes.9
8000602698Metaphasethe sister chromatids line up along the middle of the cell10
8000602699Anaphasethe split sister chromatids move via the microtubules to the opposing poles of the cell11
8000602700Telophasethe nuclei for the newly split cells form12
8000602701Cytokinesisnewly formed daughter cells split apart, separation of cytoplasm Animal: cleavage furrow Plant: cell plate13
8000602702chromatinraw material that gives rise to the chromosomes14
8000602703cell plateplant cell structure, constructed in golgi apparatus, composed of vesicles that fuse together along middle of cell, completing separation process15
8000602704cleavage furrowgroove formed between two daughter cells that pinches together to complete separation of two cells after mitosis16
8000602705mitotic spindleapparatus constructed from microtubules that assist the cell in physical separation of chromosomes17
8000602706checkpointsthroughout the cell cycle where the cell verifies that there are enough nutrients and raw materials to progress to the next stage of the cycle18
8000602707density-dependent inhibitionwhen a certain density of cells is reached, growth of cells will slow or stop because there are not enough raw materials to make new cells or have them survive19
8000602708growth factorssome cells will not divide if certain factors are absent; factors stimulate growth20

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