Mitosis

Question 1

Cell Division

Answer 1

-process by which a cell divides into 2 new cells

Question 2

Why is cell division significant?

Answer 2

-livings things grow by producing more cells not b/c each cell increases in size
-repair of damaged tissue
-if cell get too big it cannot et enough nutrients into the cell and waste out of the cell

Question 3

Process Cell Division

Question 4

Daughter Cell

Answer 4

-2 new cells off the parent cell

Question 5

Parent cell

Answer 5

orginal cell

Question 6

before cell division occurs…

Answer 6

-cell replicates (copies) all of it’s DNA, so each daughter cell gets complete set of genetic information from parent cell
-each daughter cell is exactly like the parent cell - same kind and # of chromosomes as orginal cell

Question 7

Asexual Reproduction

Answer 7

reproduction by means of cell division

Question 8

Chromatin

Answer 8

long, thread- like DNA in a non-dividing cell
-loose DNA in nucleus

Question 9

Chromosome

Answer 9

doubled, coiled, short DNA in a dividing cell
-completed DNA bundle

Question 10

DNA consists of 2 parts

Answer 10

Chromatid and Centromere

Question 11

Somatic cells

Answer 11

-have the same kind and # of chromosomes

Question 12

Interphase

Answer 12

-period of cell growth and development
-DNA replication (copying) occurs during Interphase
-cells grows, carries out normal cell activites, replicates all other organelles
-cell spends most of it’s life in this phase

Question 13

Mitosis

Answer 13

-division of the nucleus into 2 nuclei; each with the same # of chromosomes
-occurs in all the somatic (body) cells

Question 14

Mitosis why

Answer 14

-so that each daughter cell can have a nucleus with a complete set of chromosomes

Question 15

Cell Cycle

Answer 15

-series of events cells go through as they grow and divide
-cell grows, prepares for division, then divides to form 2 daughter cells

Question 16

Order of Mitosis

Answer 16

Prophase, Metaphase, Anaphase, Telophase

Question 17

Prophase

Answer 17

-chromosomes coil up
-nuclear envelope disappears
-spindle fibers form

Question 18

Metaphase

Answer 18

-chromosomes line up in the middle of cell
-spindle fibers connect to chromosomes

Question 19

Anaphase

Answer 19

-chromosome copies divide
-spindle fibers pull chromosomes to opposite poles

Question 20

Telophase

Answer 20

-chromosomes uncoil
-nuclear envelope form
-2 new nuclei are formed
-spindle fibers diappears

Question 21

Cytokinesis

Answer 21

-division of the rest of the cell after the nucleus divides

Question 22

Animal cells cytokinesis

Answer 22

cytoplasm pinches in

Question 23

Plant cells cytokinesis

Answer 23

cell plate forms

Question 24

After cytokinesis what phase do cells go into?

Answer 24

back to Interphase to coutinue to divide

Question 25

Cell divisoin control

Answer 25

- the DNA controls the cell division (all cell activty) -some cell lose their ablity to control their rate of cell divsion (if DNA is damages)....this causes tumors

Question 26

Malignant tumors

Answer 26

-cells break lose and can invade and destroy healthy tissue in other parts of the body

Question 27

Benign Tumors

Answer 27

-are not cancerous -don't spread to other parts of the body