Term
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Definition
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Term
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Definition
| A number of DNA molecules packaged into chromosomes |
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Term
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Definition
Nonreproductive cells
Have two sets of chromosomes |
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Definition
Reproductive cells
One set of chromosomes |
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Term
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Definition
| DNA and a protein which condenses during cell division |
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Term
| Preparation for Cell Division |
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Definition
| DNA is replicated and the chromosomes condense |
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Term
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Definition
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Term
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Definition
The narrow "waist" of the duplicated chromosome
Where the chromotids are most closely attached |
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Term
| Eukaryotic Cell Division Consist of: |
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Definition
Mitosis - Division of nucleus
Cytokinesis - Division of the cytoplasm |
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Term
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Definition
Nonidentical daughter cells
Each have one set of chromosomes (half as many as the parent cell) |
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Term
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Definition
Mitotic (M) phase
Interphase |
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Term
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Definition
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Term
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Definition
Prophase
Prometaphase
Metaphase
Anaphase
Telophase |
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Term
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Definition
| Cell growth and copying of chromosomes |
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Term
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Definition
| "First gap" growth, part of interphase |
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Term
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Definition
| "Synthesis" chromosome duplicates, part of interphase |
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Term
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Definition
| "Second gap" growth, part of interphase |
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Term
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Definition
| Spindle microtubules begin to form at centrosome. An aster extends from each centrosome |
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Term
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Definition
| Apparatus of microtubules that controls chromosomes movement |
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Term
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Definition
| A radial array of short microtubules |
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Term
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Definition
| Some spindle microtublues attach to the kinetochores of chromosomes and begin to move the chromosomes |
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Term
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Definition
| Chromosomes are all lined up at the metaphase plate |
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Term
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Definition
| The midway point between the spindle's two poles |
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Term
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Definition
| Sister chromatids separate and move along the kinetochore microtubule toward opposite ends of the cell |
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Term
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Definition
Nuclear envelope forms and nucleolus forms
Genetically identical daughter nuclei form at opposite ends of the cell |
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Term
| Cytokinesis in Animal Cells |
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Definition
| Occurs by a process known as cleavage forming a cleavage furrow |
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Term
| Cytokinesis in Plant Cells |
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Definition
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Term
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Definition
How prokaryotes reproduce.
The chromosome replicates, and the two daughter chromosomes actively move
apart |
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Term
| Cell Cycle Control System |
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Definition
| Allows or stops sequential events, regulated by both internal and external controls |
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Term
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Definition
| Cell cycle stops until a go-ahead signal is received |
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Term
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Definition
| Nondividing state, if a cell does not receive the go-ahead signal |
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Term
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Definition
| Cyclins and cyclin-dependent kinases (Cdks) |
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Term
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Definition
Maturation-promoting factor
Triggers a cell's passage past the G2 checkpoint into the M phase |
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Term
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Definition
| Proteins released by certain cells that stimulate other cells to divide |
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Term
| Density-Dependent Inhibitor |
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Definition
| Crowded cells stop dividing |
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Term
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Definition
| They must attached to a substrate in order to divide |
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