Mitosis & Cytokinesis Video NOTES
1.
All living things, from the tiniest protozoan to the largest whale, go through the process of
____________________ __________________.
2. Lesson 1: Mitosis is one of the ________ forms of cell division. Other forms include:
a. ________________________
b. ________________________
c. ________________________
3. Binary fission – occurs in prokaryotic cells like ____________________.
4. Meiosis creates special cells for sexual reproduction called _____________________.
a. Contains __________ the chromosome number of autosomal cells.
b. Only found in _____________ and egg cells in humans.
5. Mitosis is how multicellular organisms ___________ and develop and how new body cells
develop.
6. New cells replace ________________ cells
7. Mitosis occurs in _____________________ cells.
8. Mitosis produces two genetically _________________ cells.
9. Lesson 2: The Cell Cycle – growth, maintenance, and _______________ ________________.
10. The cell cycle can be as short as a _______________ or as long as a _____________________.
11. G1, S, and G2 are all part of _________________________, when a cell is NOT dividing.
12. G1: a cell is _______________ and performing its normal functions.
13. G0: cells may remain in this phase from a few __________ to a few ______________.
14. Muscle and nerve cells remain in ______________ and never divide.
15. S: new strands of ___________ are made to produce a replica copy of a cell’s genome.
16. G2: duplicated chromosomes pull into tightly packaged __________________.
17. Mitosis: the process of dividing the duplicated ________________________________.
18. Cytokinesis is the process of dividing the __________________ cytoplasm.
19. Following cytokinesis, each new cell begins its own _____________ _______________.
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Mitosis & Cytokinesis Video NOTES
20. Lesson 3: Mitosis Phases
21. Prohase: the _____________________ of the four phases. There are four key events:
a. The first event: The chromosome condensation reaches the point that the duplicated
chromosomes are visible with a light microscope. The 2 copies are called ___________
chromatids and are attached at the ____________________________.
b. The second event: the formation of the ______________ ______________. In animal
cells, centrioles move to opposite side of the cell. Plant cells do not have centrioles.
Spindle fibers control the separation of chromosomes into two equal sets. Animal cells
also for __________________.
c. The third event: The disintegration of the _____________ _________________.
d. The fourth event: The growth of another group of _______________ ____________
22. Metaphase: two events
a. The first event: the attachment of the spindle fibers to the _______________ of the
chromosomes/sister chromatids.
b. The second event: movement of the chromosomes to the ________________ of the
cell.
23. Anaphase: 3 events, the _______________ phase of mitosis.
a. The first event: the division of the chromosome’s __________________. Each
b. The second event: the shortening of the attached ____________ _________________
c. The third event: the lengthening of other fibers to _____________________the cell.
d. Chromosomes are moved to ___________________ poles of the cell.
24. Telophase: final phase with 3 key events, which occur simultaneously:
a. The first event: Mitotic spindle fibers are ____________________
b. The second event: The _________________ ____________________ is reformed.
c. The third event: The chromosomes __________________.
d. Mitosis is complete at the end of _________________________.
25. Cytokinesis: begins during the latter part of _____________________ and continues through
the end of _____________________________.
26. Cleavage: the appearance of a groove that rings a cell called a ______________
__________________. * only in ___________________ cells.
27. The cleavage furrow is attached to the ___________ surface of a cell.
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Mitosis & Cytokinesis Video NOTES
28. In plants: plant cells do not pinch in two – they form a cell _________________ instead.
a. ________________ fuse together to for the cell plate.
b. _________________ is then laid down to form two new cell walls.
Make a sketch of the four mitosis phases in the boxes below:
Phase: ________________________
Phase: __________________________
Phase: _______________________
Phase: __________________________
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