unit 4 cell division. the rate at which wastes are produced depends on a cell’s….. or as a cell...

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Page 1: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

Unit 4 Cell Division

REVIEW

Page 2: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

The rate at which wastes are produced depends on a cell’s…..

VOLUME SURFACE AREA

or

As a cell becomes larger, which increases faster???

Therefore, cells have more trouble moving needed materials in and waste products out.

LARGER or SMALLER

Page 3: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

ANAPHASECELL DIVISIONCYTOKINESISG1G2INTERPHASEMETAPHASEMITOSISPROPHASESTELOPHASE

KJIH

G

FE

G1

INTERPHASETELOPHASE

ANAPHASEMETAPHASE

PROPHASE

CELL DIVISION

CYTOKINESIS

MITOSISS

G2

This diagram represents the ___________________________________.Cell Cycle

When are chromosomes visible?

When is a cell’s DNA replicated?

Page 4: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

C

CHROMOSOMEBROTHER CENTROSOMES

CHROMOMERECENTRIOLECENTROMERESISTER CHROMATIDS

CENTROMERE

SISTER CHROMATIDS

CHROMOSOME

As shown here, only visible during…

PROPHASEMETAPHASE

Page 5: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

CELL CYCLEINTERPHASE CELL DIVISION

G1 S G2 MITOSIS CYTOKINESIS

PROPHASE

METAPHASE

ANAPHASE

TELOPHASE

Page 6: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

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.

CHROMOSOMESENVELOPE

SPINDLESEQUATOR

SPLITSEPARATE

CHROMOSOMESREFORMS

ANIMAL

PLANT

Page 7: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

Page 8: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

Cells will stop _________________ when they come in contact with other cells.

The cell cycle is regulated by proteins called ___________________.

GROWING

CYCLINS

Page 9: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

CANCER• CELLS HAVE LOST THE ABILITY

TO CONTROL ____________________

• FORM MASSES OF CELLS CALLED _____________________

• AFFECTS _________________________ ORGANISMS

GROWTH

TUMORS

MULTICELLULAR

Page 10: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

GAMETES

Produced by… Are…Contain…

mitosis

meiosis

mitochondriaMore chromosomes

than body cells

Homologous chromosomes

1 set of chromosomes

2 sets of chromosomes

polyploid

diploid

haploid

Page 11: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

Z

The process shown is…

Letter “Z” represents a…

Chromosomes form “Z” during…

Prophase II

tetrad

Prophase Ichromatid

replicationCrossing-over

anaphasemitosis

Page 12: Unit 4 Cell Division. The rate at which wastes are produced depends on a cell’s….. or As a cell becomes larger, which increases faster??? Therefore, cells

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

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