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Reproduction of cells;Mitosis
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Mitosis
The stage of the cell cycle where the nucleus divides
Interphase
The stage of the cell cycle where the cell PREPARES to divide
G1, S, G2,
Mitosis:
Prophase
A.chromatin condenses to into visible chromosomes
B. Mitotic Spindle form in cytoplasm between centriole pairs; lengthens as microtube grows.
Mitosis:
Prometaphase
A. Nuclear Envelope fragments
B. Mitotic Spindle invades Nucleus
C. Microtubules bind chromatids at
kinetochores
Mitosis:
Metaphase
A. Centrosomes at opposite ends of cell
B. Chromosomes (attached to MT's) line up at metaphase plate (center of cell)
Mitosis:
Anaphase
Sister chromatids seperate and are pulled toward opposite poles.
Kinetochore MT's
shorten
at the ends
Motor proteins "walk" along MT's to pull chromatids
non - kintochore MT's get longer and slide past each other
Mitosis:
Telophase
A. Nuclear envelope reform (now two sepertare nuclei)
B. Chromosomes partly unfold
Cytokinesis
(start during telophase)
Cytokinesis
Microfilaments under plasma membrane princh in; form
cleavage fullow
to squeeze cell in half
Centromere
Duplicated chromosomes has
2 sister chromotids
attacted at the
centromere
Centriole
Rectangular structures that are copied during the late part of interphase; pull on spindle fibers
Chromatid
Two of them make up a chromosome
What is the longest phase in cell cycle?
Interphase, usually takes 18 hours
The M phase takes about 6 hours
It takes a cell one day to divide
What's the longest phase in mitosis?
The metaphase is the longest phase of mitosis
Author
robinsoncol
ID
115905
Card Set
Reproduction of cells;Mitosis
Description
Reproduction of cells
Updated
2011-11-11T02:42:02Z
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