cell division

Question 1

how do Prokaryotes reproduce

Answer 1

binary fission

Question 2

what is binary fission

Answer 2

where a cell simply splits into two.

Question 3

how do Eukaryotes produce

Answer 3

mitosis, and meiosis.

Question 4

what do organisms need new cells

Answer 4

growth, replacing old or damaged cells, and reproduction.

Question 5

what do Mitosis and meiosis ensure

Answer 5

new cells function properly

Question 6

what dose Mitosis and meiosis do.

Answer 6

making sure new cells have the appropriate amount of DNA.

Question 7

can DNA be in different forms

Answer 7

yes

Question 8

why would DNA be in different forms

Answer 8

depending on which step of cell division is occuring

Question 9

what is is long thread-like pieces.

Answer 9

chromatin

Question 10

what is DNA in the nucleus

Answer 10

chromatin

Question 11

what forms when chromatin condenses before cell division

Answer 11

chromosomes

Question 12

how many chromosomes do humans have in each cell

Answer 12

46

Question 13

what are the two main phases of the cell cycle

Answer 13

interphase, Mitotic Phase or Cell Division

Question 14

what are the three sub phases of interphase

Answer 14

G1, S, G2

Question 15

what happens during G1

Answer 15

The cell grows and carries out its normal functions

Question 16

what happens during S phase

Answer 16

Synthesis or replication of DNA occurs

Question 17

what happens during G2

Answer 17

Cell grows, carries out normal functions, and prepares to divide

Question 18

what is the the stage of the cell cycle when the cell is actully diving

Answer 18

mitotic phase or M phase.

Question 19

what are the two parts of mitotic phase

Answer 19

mitosis, and cytokinesis

Question 20

what is cytokinesis

Answer 20

division of the cytoplasm

Question 21

what is mitosis

Answer 21

division of the nucleus & chromosomes.

Question 22

what happens during phrophase

Answer 22

Chromatin condenses to form chromosomes
Nuclear envelope breaks down & nucleolus disappears
Spindle fibers form

Question 23

what stage do Spindle fibers form

Answer 23

prophase

Question 24

what phase dose the Nuclear envelope breaks down & nucleolus disappears

Answer 24

prophase

Question 25

what phase dose the Chromatin condenses to form chromosomes

Answer 25

prophase

Question 26

what happens during metaphase

Answer 26

Chromosomes line up across the middle of the cell Sister chromatids attach to a spindle fiber at the centromere

Question 27

in what stage do Sister chromatids attach to a spindle fiber at the centromere

Answer 27

metaphase

Question 28

in what stage do Chromosomes line up across the middle of the cell

Answer 28

metaphase

Question 29

what happens during anaphase

Answer 29

Centromeres split Sister chromatids separate Chromatids move to opposite ends of the cell by spindle fiber stretching Cell stretches out

Question 30

in what stage dose the Cell stretches out

Answer 30

anaphase

Question 31

in what stage dose Chromatids move to opposite ends of the cell by spindle fiber stretching

Answer 31

anaphase

Question 32

in what stage do Sister chromatids separate

Answer 32

anaphase

Question 33

in what stage do centromeres split

Answer 33

anaphase

Question 34

what happens during Telophase & Cytokinesis

Answer 34

Chromosomes begin to uncoil New nuclear envelope forms around each chromosome region Cell pinches and splits the cell into two new cells.

Question 35

true or false, Cytokinesis occurs about the same time as telophase

Answer 35

true

Question 36

in which stage do Cell pinches and splits the cell into two new cells.

Answer 36

Telophase & Cytokinesis

Question 37

i what stage do Chromosomes begin to uncoil

Answer 37

Telophase & Cytokinesis

Question 38

in what stage dose New nuclear envelope forms around each chromosome region

Answer 38

Telophase & Cytokinesis

Question 39

how many parts dose an animal cell pinch into

Answer 39

two

Question 40

wherre dose an animal cell pinch at

Answer 40

cleavage furrow

Question 41

in a plant cell what will from to divide two daughter cells

Answer 41

cell plate

Question 42

how many parents are need in asexual reproduction

Answer 42

one

Question 43

how much dna dose the parnet pass to the off spring during asexual reproduction

Answer 43

all of it

Question 44

how many parents dose Sexual reproduction require

Answer 44

two

Question 45

what is The union of sperm and egg called

Answer 45

fertilization

Question 46

what is The product of fertilization called

Answer 46

zygote

Question 47

what is a zygote

Answer 47

the first cell of the new offspring

Question 48

how many sets of chromosomes will a cell have if it is a result of sexual reproduction

Answer 48

two sets

Question 49

what are the two sets of DNA that come from sexual reproduction called

Answer 49

homologous chromosomes

Question 50

what is A cell that contains both sets of homologous chromosomes called

Answer 50

diploid

Question 51

what produces produces identical daughter cells

Answer 51

mitosis

Question 52

Gametes conatine only a single set of chromosomes and are said to be what

Answer 52

haploids

Question 53

what occurs only in the production of gametes

Answer 53

meiosis

Question 54

what is the purpose of meiosis

Answer 54

to reduce the chromosome number in the gametes by half.

Question 55

in meiosis chromosomes replicate once in what phase of ingterphase

Answer 55

s phase