Download Mitosis Notes - Ms Budzinski`s Classroom

Ms. Budzinski
Science 10S
Mitosis Notes
Lesson 1: Reproduction
Names: ________________________
The Cell Theory
The cell theory states that…
1. All living things are composed of ____________.
2. The cell is the _________________________________________.
3. All cells come from _______________________ cells.
DNA
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All living things have a set of ____________________ that control what they look like, do, think,
act, etc…
Every cell in your body has a _____________________________ of these instructions
These instructions are arranged in very ______________ and organized packages and must
always be kept ____________________.
If any part of the instructions are misplaced, damaged or mixed up, bad things can happen.
These very important instructions is called DNA.
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DNA stands for _____________________________________.
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The DNA is located in the ________________ of the cell.
The DNA is arranged in very long strands and coiled into
__________________________.
Human ______ is arranged into ______ chromosomes pairs; or
______ single stranded chromosomes.
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In order for your body to ________ or heal cuts and scrapes, the cells
have to ______________.
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When cells divide, the DNA in the nucleus ________________.
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For 22 pairs of your chromosomes, this replication is called ___________________
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The _______ chromosome pair is a special set of chromosomes that we will discuss later.
Ms. Budzinski
Science 10S
Functions of Cell Division
1. Healing and Tissue Repair
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You replace __________________ old cells each second.
2. _________________
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An increase in the number of cells.
3. Reproduction of Organisms
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All organisms ________________ and spread.
Any new cell come from existing cells by a process of reproduction.
A cell’s life is a sequence of steps called the
_______________________________.
Cell cycle has two parts:
1. ________________________
2. _______________________________
The Stages of Mitosis
Interphase
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Rapid growth / repair – cell ________________ for division.
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Chromosomes (blueprints) must be _______________. (replication
of DNA)
_____________________________.
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Cell division phase - two parts to cell division.
1. Mitosis - division of _____________________ and nucleus.
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Both cells have __________________ set of blueprints/ DNA.
Mitosis is how we reproduce ________________________ (body cells / somatic cells).
Ms. Budzinski
Science 10S
2. ______________________ - divide cytoplasm and organelles.
End Result:
Two _________________ cells that will re-enter ______________ begin the process again.
Interphase
Copying of organelles and __________________________________:
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Leaving two __________________________ of DNA.
(Deoxyribonucleic acid)
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Chromosomes look like __________________________.
Prophase
__________________________________________
becoming ____________________.
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Nuclear membrane disappears.
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_______________________ move to opposite ends of
the cell.
Sister
Chromatids
Centriole
s
Centriole
s
Metaphase
Spindle fibres
Spindle fibers grow from ___________________
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________________ to sister chromatids
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_______________ chromatids along the __________ of the cell.
Sister
Chromatids
Ms. Budzinski
Science 10S
Anaphase
___________________________ shorten and pull.
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_____________________ sister chromatids.
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__________________ chromatids at opposite ends of cell.
Telophase
New nuclear membranes forms.
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_______________________________________________
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Chromosomes uncondense (back to ________________).
Cleavage
of
cell into
two
Cytokinesis
Animal: cell membrane _____________ cell into 2.
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Each daughter cell has copy of DNA, nucleus, organelles and cytoplasm.
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__________: Two new cells are formed as the ____________________ (plate) grows down
the middle of the cell.
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Leaving ____ identical daughter cells.