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11 Cards in this Set
- Front
- Back
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What is the difference in CELL DIVISION between single celled and multicellular organisms?
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- Single celled organisms divide for reproduction
- Multicellular organisms have reproductive cells (eggs and sperm) but also have somatic cells that divide for growth and replacement |
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What is MITOSIS?
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Nucleus division of cells in single celled organisms and somatic cells.
- Divide into two daughter cells that have the same number of chromosomes and the same genes as the parent. |
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What is MEIOSIS?
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Occurs in multicellular organism
- in preperation for sexual reproduction |
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What is CYTOKINESIS?
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The division of the cytoplasm (which occurs after the division of the nucleus.
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What is CELL DIVISION?
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Events from the beginning of one cell division to the begining of the next.
- Divided into two major phases: interphase and MITOTIC phase. |
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What phases are encompased in the INTERPHASE?
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G1, S and G2
- DNA replication and most of the cell's growth and biochemical activity take place here. |
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What occurs in the M phase?
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MITOSIS.
- (P) Prophase - (P) Prometaphase - (M) Metaphase - (A) Anaphase - (T) Telephase - (C) Cytokinesis |
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Do plant cells have CENTRIOLES?
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No.
- In replication, each new paired set of centrioles is composed of the original centriole, plus a newly-made centriole. If the centrioles are used in forming motility organelles, flagella or cilia, the older of the two centrioles, the mother centriole, becomes the basal body which organizes the structure of the organelle.[3] |
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Are plant chromosomes larger than those of an animal?
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Yes
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What are LEUKOYTES?
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White blood cells or leukocytes are cells of the immune system which defend the body against both infectious disease and foreign materials.
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What is the CHIASMA?
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Occur during process of chromosome crossover in Prophase I - it is the point at which they temporarily join.
- Nonsister chromatids may break at corresponding points and exchange parts. |
