Download 03-Mitosis student HO - Alexmac

SNC2D Biology Cells, Tissues and Living Systems
Mitosis and Cell Division
(Science Perspectives 10, Nelson, pp. 40-44)
The Cell Cycle
As eukaryotic cells grow and divide, they pass through a cell cycle that consists of 3 stages:
1.
2.
3.
______________
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_________________
________________________
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_____________________
_____________________
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The length of time to complete a cell cycle is different for different types of cells:
Embryonic cells ___________________
Adult nerve cells _______________________
Stage 1: Interphase

Interphase is the ___________ stage of the cell cycle.

The cell performs its normal
functions and, in preparation
for cell division,
______________________
______________________
SNC2D Biology Cells, Tissues and Living Systems
Stage 2: Cell Division - Mitosis (4 phases)
Phase 1: Prophase
•
DNA compacts into visible form as _________________.
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Each chromosome contains two strands called _____________________.
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Sister chromatids are held together by a ________________.
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The __________ ____________ breaks down
Phase 2: Metaphase
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Chromosomes line up in the ___________ of the cell.
Phase 3: Anaphase
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The centromere splits and sister chromatids ______________.
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They are now called ____________________________.
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They move to ________________________________, pulled by
_____________________
Phase 4: Telophase

Final phase of mitosis.
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Chromosomes _________________and are no longer ____________.
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A new ________________________ forms around each group of
daughter chromosomes.
Stage 3: Cell Division - Cytokinesis
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Final stage of cell division.
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The cytoplasm ____________ and two _______________
cells are formed.
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In a plant cell, a plate develops into a new ________ ________
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In an animal cell, the cell membrane is ____________________________
How to remember the different stages of the cell cycle, and the 4 phases of mitosis? Make this
pledge:
I, PMAT, C
SNC2D Biology Cells, Tissues and Living Systems
Summary:
Homework Questions:
1. During which stage of the cell cycle does replication of the DNA occur?
2. Why are chromosomes visible during mitosis but not at other times?
3. Which stage or phase of the cell cycle corresponds to each of the descriptions below?
a) A new cell wall begins to form.
b) The membrane of the nucleus dissolves.
c) Daughter chromosomes begin to separate.
d) Thick chromosome threads are visible in 2 distinct regions of the cell.
e) The cell grows and copies its DNA.
f)
The chromosomes line up in the middle of the cell.