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Fichas por kala.eddy011, actualizado hace más de 1 año
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Creado por kala.eddy011
hace casi 9 años
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| Pregunta | Respuesta |
| chromosomes | structures in the cell that contain the genetic information (DNA) that is passed from one generation to the next- long strands of DNA (genetic info) |
| In Prokaryotes | have no nucleus so DNA floats in cytoplasm sing-circular structure |
| In Eukaryotes | much more DNA than prokaryote held in coiled strand by proteins called histones this protein/chromosome coil is called chormatin # of choromes determine species stay in own kingdom LONG THIN CHROMATIN |
| Cell Cycle | period from the beginning of one mitosis to the beginning of the next (series of events cells go through as they grow, prepare to divide, and divide to form daughter cells |
| In Prokaryotes | The cell cycle is called binary fission occurs when cells reach a certain size not well understood cell copies DNA and organelles then splits in half |
| In Eukaryotes | 4 phases amount of time spent in each phase depends on cell type |
| Interphase | cell spends most time in this phase |
| G1 phase | cells are growing and increasing in size, cell is actively working |
| S Phase | DNA is replicated |
| G2 Phase | organelles are replicated |
| Mitosis | the cell is dividing into two daughter cells |
| Prophase | the chromosomes condense, the nuclear envelop breaks down and the spindle forms. |
| Metaphase | The chormosome line up on the central plane of the cell |
| Anaphase | The centromeres divide, and the chromatids move toward opposite poles. |
| Telophase | The chormosomes uncoil and a new nuclear envelop forms.The spindle fibers disappear. |
| Cytokenisis | A part of telophase The cytoplasm pinches in half Each daughter cell contains an identical set of chromosomes In plant cells the cell plate forms to create a new cell wall |
| IPMAT | 1. Interphase 2. Prophae 3. Metaphase 4. Anaphase 5. Telophase |
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