10A Mitosis Study Guide KEY 2015 PDF

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Mitosis Study Guide...

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Mitosis Study Guide Biology

Name

KEY

Study the graph to the right and refer back to your notes on the LIFE CYCLE OF THE CELL. Describe the events that take place in each of the phases listed below. Remember to focus on the chromosomes, centrioles, fibers, nuclear and cell membranes Make sure you understand what phases are part of Interphase and what phases are part of mitosis

INTERPHASE GAP 1

SYNTHESIS

GROWTH

DNA REPLICATION

DOES ITS JOB

(CHROMOSOMES COPIED)

ORGANELLES ARE COPIED

MITOSIS GAP 2

ADDITIONAL GROWTH

P CHROMOSOMES -SHORTEN AND THICKEN -WITH SISTER CHROMATID CENTRIOLES -SEPARATE FIBERS -FORM BETWEEN CENTRIOLES NUCLEUS -BREAKS DOWN

M CHROMOSOMES -LINE UP IN MIDDLE OF CELL

A CHROMOSOMES -PULLED APART

CENTRIOLES -AT OPPOSITE ENDS OF CELL

CENTRIOLES -AT OPPOSITE ENDS OF CELL

FIBERS -ATTACHED TO SISTER CHROMATIDS

FIBERS PULL APART SISTERCHROMA TIDS AT CENTROMERS

NUCLEUS -BROKEN DOWN

T CHROMOSOMES -DECONDENSE, UNWIND FIBERS BREAK APART NUCLEUS REFORMS

CYTOKINESIS

CYTOPLASM AND ORGANELLES SEPARATE INTO DIFFERENT CELLS

CELL MEMBRANE PINCHES IN FORMING 2 CELLS

NUCLEUS -STILL BROKEN DOWN

Terms to Know: 1. Mitosis – cell reproduction (division) where two identical cells are made ; growth and repair of the body 2. Sister chromatids – chromosome that has made a copy of itself

3. Chromatids - one half of a duplicated chromosome 4. When do chromosomes replicate (copy) themselves? Before mitosis, (during synthesis phase of INTERPHASE) 5. Synthesis stage 2nd step of Interphase when cell copies DNA 6. Cytokinesis division of the cytoplasm, occurs during mitosis 7. Interphase Consists of Gap 1, Gap 2 and synthesis. Most common phase. Growth, DNA replication, Function 8. Describe role of cell parts in mitosis  Fibers – made of protein and pull chromosomes apart  Chromosomes- copy themselves before step 1 (prophase) 9. Number of chromosomes after mitosis – same as the original cell 10.Number of chromosomes in human cell - 46 11.Effect of aging on mitosis- same as the original cell 12.Cancer – BODY cells reproduce at a faster rate than normal 13.Malignant – can break away and form other tumors and attack other types of tissue 14.Benign – cells that remain clustered and can be removed 15.Possible causes of cancer - chemicals, viruses, radiation 16.Impact of cancer on cells - cancer cells crowd out normal cells

Label the steps of the Cell Cycle

A PROPHASE B INTERPHASE C ANAPHASE D TELOPHASE E METAPHASE

D

A

A METAPHASE B ANAPHASE C TELOPHASE

E

D PROPHASE

B C

E INTERPHASE...