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mitosis
cell division
| Question | Answer |
|---|---|
| what are the two stages of cell division. | mitosis and cytokinesis |
| what is the function of the mitotic spindle. | help separate the chromatids |
| what is the cell cycle. | the series of events that the cell goes through to grow and divide |
| what are the four phases of mitosis | 1.prophase 2.metaphase 3.anaphase 4.telophase |
| what happens during prophase | the chromosomes become visible the centrioles take up positions on opposite sides of the nucleus |
| what happens during metaphase | the chromosomes line up across the center of the cell |
| what happens during anaphase | the chromosomes move until they form two groups near the poles of the spindle |
| what happens during telophase | a nuclear envelope re forms around each cluster of chromosomes the nucleolus becomes visible in each daughter nucleus |
| what is cytokinesis | the division of the cytoplasm of the cell following the division of the nucleus |
| how does cytokineses occur in most animal cells | the cell forms a cleavage furrow that tightens and splits the cell |
| in eukaryotic cells what are the two main stages of cell division | division of the cells nucleus 2. division of the cells cytoplasm |
| when chromosomes become visible at the begining of cell division what does each chromosome consist of | two identical sister chromatids |
| the division of the cells nucleus during the m phase of the cell cycle is called | mitosis |
| interphase is divided into what three phases | 1.g1 phase 2. s phase 3. g2 phase |
| what happens during the g1 phase | increase in-size creates new proteins and organelles |
| what happens during the s phase | chromosomes are replicated |
| what happens during the g2 phase | organelles and molecules required for cell division are produced |
| which cells undergo cell division | both prokaryotic and eukaryotic cells |
| what is the correct order of the cell cycle in an eukaryotic cell | g1-s-g2-m |
| the correct order of a prokaryotic cell division is | growth-DNA replication-chromosome segregtion |
| what happens during mitosis | the nucleus of the cell divides |
| chromatid | Either of the two strands joined together by a single centromere |
| centromere | the center of the chromosome where the two chromatids touch |
| chromatin | the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins |
| chromosomes | stands of DNA stuffed in 2 chromatids that make an x shape |
| interphase | the period of the cell cycle where the nucleus is not undergoing division |
| cyclin | one of a family of closely related protiens that regulate the cell cycle in eukaryotic cells |
| cancer | an uncontrolled growth of cells with the potential to spread and form colonies elsewhere in the body. |
| growth factor | a substance that affects the growth of a cell |
| tumor | a mass amount of cells that divide abnormally quickly and fail to carry out their usual function |
| embryo | the earliest stage of a developing unborn individual in the uterus |
| stem cell | a cell in the body that can divide to give rise to more cells. |
| differentiation | a process which a less specialized cell becomes more specialized |
| cell division | the division of a cell into two identical daughter cells with the same generic information |
| asexual reproduction | a form of reproduction that doesn't involve miosis |
| sexual reproduction | a form of reproduction involving the mating of a male and female sperm |
| the rate at which materials enter and leave the cell depends on the cells? | surface area |
| in order for a cell to divide successfully the cell must first | duplicate its genetic information |
| if a cell has 12 chromosomes how many chromosomes will each of its daughter cells have after mitosis and cytokenisis | 6 |
| in the plant cell what forms midway between the divided nuclei during cytokinesis | cell plate |
| the timing in the cell cycle in eukaryotic cells is believed to be controlled by a group of closely related proteins known as | cyclins |
Created by:
rcbutler
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