1. Unit 4 Cell Division
REVIEW

2. SURFACE AREA VOLUME LARGER SMALLER
The rate at which wastes are produced depends on a cell’s…..
As a cell becomes larger, which increases faster???
SURFACE AREA
VOLUME or
LARGER
SMALLER
Therefore, cells have more trouble moving needed materials in and waste products out. or

3. Cell Cycle
This diagram represents the ___________________________________.
ANAPHASE
CELL DIVISION
CYTOKINESIS G1 G2
INTERPHASE
METAPHASE
MITOSIS
PROPHASE S
TELOPHASE G1
CYTOKINESIS G K
CELL DIVISION
TELOPHASE J
ANAPHASE
INTERPHASE E I
METAPHASE F S
MITOSIS H
PROPHASE G2
When are chromosomes visible?
When is a cell’s DNA replicated?

4. PROPHASE METAPHASE C CHROMOSOME CENTROMERE SISTER CHROMATIDS
As shown here, only visible during…
PROPHASE
METAPHASE
SISTER CHROMATIDS
CHROMOSOME
SISTER CHROMATIDS
BROTHER CENTROSOMES
CENTROMERE
CENTRIOLE
CHROMOMERE

5. CELL CYCLE INTERPHASE CELL DIVISION G1 S G2 MITOSIS CYTOKINESIS
PROPHASE
METAPHASE
ANAPHASE
TELOPHASE

6. CHROMOSOMES ENVELOPE SPINDLES EQUATOR SPLIT SEPARATE CHROMOSOMES
In prophase, chromatin condenses so that ___________________ are now visible. The nuclear ___________________ disintegrates. Centrioles separate and chromosomes attach to ______________. Chromosomes line up along the _________________. Centromeres _______________ and sister chromatids ____________________ and move to opposite sides of the cell. Spindles break apart, __________________ begin to disperse, and the nuclear envelope ________________.
In ______________ cells, the cell membrane pinches inward.
In ______________ cells, a cell plate forms between the nuclei.
CHROMOSOMES
ENVELOPE
SPINDLES
EQUATOR
SPLIT
SEPARATE
CHROMOSOMES
REFORMS
ANIMAL
PLANT

8. GROWING
Cells will stop _________________ when they come in contact with other cells.
The cell cycle is regulated by proteins called ___________________.
CYCLINS

9. CANCER GROWTH TUMORS MULTICELLULAR
CELLS HAVE LOST THE ABILITY TO CONTROL ____________________
FORM MASSES OF CELLS CALLED _____________________
AFFECTS _________________________ ORGANISMS
GROWTH
TUMORS
MULTICELLULAR

10. Homologous chromosomes More chromosomes than body cells
GAMETES
Produced by…
Contain…
Are…
mitosis
2 sets of chromosomes
haploid
1 set of chromosomes
meiosis
diploid
Homologous chromosomes
mitochondria
polyploid
More chromosomes than body cells

11. mitosis chromatid Prophase II anaphase replication Prophase IZ
The process shown is…
Letter “Z” represents a…
Chromosomes form “Z” during…
mitosis
chromatid
Prophase II
anaphase
replication
Prophase I
Crossing-over
tetrad

12. MITOSIS MEIOSIS Reduces the number of chromosomes
Results in the formation of diploid cells
Results in the formation of haploid cells
Results in the formation of four genetically different cells
Results in the formation of two identical daughter cells
Tetrads from and crossing over occurs
Chromosomes assort independently