Cell Division

Question 1

Chromosome

Answer 1

Made of DNA, carries genetic info

Question 2

Chromatid

Answer 2

Duplicate half of Chromosome

Question 3

Centromere

Answer 3

Holds chromatin together, in center

Question 4

Chromatin

Answer 4

DNA thats unraveled, can’t see it

Question 5

Sex chromosomes

Answer 5

XX - girl
XY - boy
Only 2 are sex cells, other 44 non sex

Question 6

Normal human cell

Answer 6

46

Question 7

human sex cell

Answer 7

23

Question 8

Homologous chromosomes

Answer 8

matched pair of chromosomes

Question 9

Diploid

Answer 9

Full # - 46

Question 10

Haploid

Answer 10

Half # - 23

Question 11

Sexual reproduction

Answer 11

2 parents
slow, few offspring
genetic variation

Question 12

Asexual reproduction

Answer 12

1 parent
fast, many offspring
Genetically all same

Question 13

Binary fission

Answer 13

(asexual) 1 cell splits into 2
dubble every time splits

Question 14

Mitosis

Answer 14

Division of nucleus, non sex cells

Question 15

Gametes

Answer 15

sex cells
(sprim & egg)

Question 16

Meiosis

Answer 16

Division of nucleus, sex cells

Question 17

Interphase

Answer 17

Time between division (90%)

Question 18

Cytokinesis

Answer 18

Division of cytoplasm

Question 19

G1

Answer 19

Cell grows, organelles copied

Question 20

S

Answer 20

DNA is Copied

Question 21

G2

Answer 21

Cell prepares to divide

Question 22

Prophase

Answer 22

Nuclear membrane disappears
Chromosomes visible
Spindle fiber apears

Question 23

Metaphase

Answer 23

Chromosomes line up down middle

Question 24

Anaphase

Answer 24

Chromosomes separate and move to opposite sides of cells

Question 25

Telophase

Answer 25

Cleavage furrow appear chromosomes unravel Nuclear membrane reappears

Question 26

Cleavage furrow

Answer 26

The dip wear 2 cells begin to separate

Question 27

Cell Plate

Answer 27

(Plants) forms new cell wall between cells

Question 28

Spindle fibers

Answer 28

Help pulls chromosomes apart (comes from centriol)

Question 29

Cancer

Answer 29

adnormal growth & division of cells

Question 30

Tetrad

Answer 30

Chromosomes are in 4s

Question 31

Crossing over

Answer 31

Chromosomes cross over and exchange genetic info

Question 32

Prophase l

Answer 32

Homologous Chromosomes visible Nuclear membrane disappears Spindle fibers appear (crossing over happens)

Question 33

Metaphase l

Answer 33

Homologous Chromosomes line up down middle (equator)

Question 34

Anaphase l

Answer 34

Homologous Chromosomes separate and move to opp. sides of cell

Question 35

Telophase l

Answer 35

Nuclear membrane repairs 2 haploid cells

Question 36

Prophase ll

Answer 36

Sister Chtomatids (2) nuclear membrane diss spindle fiber appear (no crossing over)

Question 37

Metaphase ll

Answer 37

Sister Chromatids line up down middle (equator)

Question 38

Anaphase ll

Answer 38

Sister Chromitids separate to opp sides of cell

Question 39

Telophase ll

Answer 39

4 haploid cells

Question 40

cell cycle

Answer 40

Interphase, Mitosis, Meiosis

Question 41

Zygote

Answer 41

fertilized egg - (46)

Question 42

Oogenesis

Answer 42

production of egg cells all at birth - ends at 50ish only 1 good egg the other three are called polar bodies

Question 43

Spermatogenesis

Answer 43

Production of sperm starts at puberty - ends at death All 4 good

Question 44

Polar bodies

Answer 44

The three bad eggs that fertilize the one good one

Question 45

centriol

Answer 45

Only in animals where spindel fibers come out of

Question 46

Identical

Answer 46

1 egg splits

Question 47

Fraternal

Answer 47

2 eggs fertilized