Cell Division-I | Cell Division-II | Cell Division-III | Mitosis phases | Cell cycle control |
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What is cell division?
The continuity of life is based on the reproduction of cells
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What is chromatin?
A complex of DNA and protein that condenses during cell division, found in eukaryotic chromosomes
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What is centromere?
The narrow “waist” of the duplicated chromosome, where the two chromatids are most closely attached
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What is prophase?
Assembly of spindle microtubules begins, chromosomes condense, centrosome replicates
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What is G1 checkpoint?
Once the cell is finished dividing the two new cells will start the cell cycle over again beginning with interphase; most important checkpoint
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What is ability of organisms to reproduce?
Best distinguishes living things from nonliving matter
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What is chromosomes?
Packaged DNA molecules in a cell
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What is kinetochore?
Where spindle microtubules attach to chromosomes
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What is prometaphase?
Some spindle microtubules attach to the kinetochores of chromosomes and begin to move the chromosomes
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What is cyclins and cyclin dependent kinases (cdks)?
Two types of regulatory proteins are involved in cell cycle control
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What is genome?
All the DNA in a cell (library of herdeitary information)
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What is sister chromatids?
Each duplicated chromosome has two, which separate during cell division
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What is mitotic spindle?
An apparatus of microtubules that controls chromosome movement during mitosis
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What is metaphase?
The chromosomes are all lined up in the middle along this plate
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What is MPF (maturation promoting factor)?
A cyclin-Cdk complex that triggers a cell’s passage past the G2 checkpoint into the M phase
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What is somatic cells?
(nonreproductive cells) have two sets of chromosomes
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What is daughter cells?
Most cell division results in these cells with identical genetic information, DNA to the parent cell
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What is interphase?
90% of the cell cycle that consists of G1, S, and G2 phases
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What is anaphase?
Sister chromatids separate and move along the kinetochore microtubules toward opposite ends of the cell
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What is G0 phase?
If the cell does not receive the go-ahead signal, it will exit the cycle, switching into a nondividing state called the ____ phase
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What is gametes?
(reproductive cells: sperm and eggs) have half as many chromosomes as somatic cells
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What is mitosis?
The division of the nucleus
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What is cytokinesis?
The division of the cytoplasm
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What is telophase?
Genetically identical daughter nuclei form at opposite ends of the cell
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What is cancer?
These cells do not respond normally to the body’s control mechanisms and may be benign or malignant
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