mitosis

Question 1

what are the two stages in the cell cycle?

Answer 1

interphase
mitosis

Question 2

what does interphase consist of?

Answer 2

g1-rapid growth, centriole replicates
s-DNA replicates
g2-final growth, mitotic phase begins

Question 3

what are the stages of mitosis?

Answer 3

prophase
metaphase
anaphase
telophase and
cytokenisis

Question 4

how does the cell divide?

Answer 4

by the stages of mitosis

Question 5

what is prophase?

Answer 5

the first stage of the mitotic phase

Question 6

what happens in prophase?

Answer 6

chromatin fibers tightly coil to become chromosomes
the nuclear envelope fragments
mitotic spindles develope from microtublues
polar fibers extend from each centriole

Question 7

what happens in metaphase?

Answer 7

the centrioles move to opposite ends of the cell
chromosomes align themselves on the meta plate
chromosomes lie in the center in a single file line

Question 8

what happens in anaphase?

Answer 8

the paired chromatids move apart
each chromatid is now its own chromosome

Question 9

what happens in telophase?

Answer 9

the polar fibers contract
the nuclear envelope forms
a cleavage furrow pinches in
chromosomes uncoil
cytokenisis begins

Question 10

what happens in cytokenisis?

Answer 10

it begins to divide forming two identical daughter cells from the cytoplasm

Question 11

DNA is copied in what phase?

Answer 11

interphase

Question 12

when do spindle fibers form?

Answer 12

prophase

Question 13

the number of organelles increase in what phase?

Answer 13

cytokenisis

Question 14

when do chromosomes line in the middle?

Answer 14

metaphase

Question 15

what does the cell cycle consist of?

Answer 15

all the stages of mitosis, list them

Question 16

how many cells are produced in mitosis?

Answer 16

two

Question 17

what stage does the cell spend most of its life?

Answer 17

interphase

Question 18

A protein called p53 can keep cells from dividing. To prevent cell division, this protein most likely stops ___________.

Answer 18

mitosis

Question 19

When the DNA in a cell is uncoiled and spread throughout the nucleus, this process is called chromatin. State true or false.

Answer 19

true

Question 20

The spindle fibers are produced by the ________.

Answer 20

centrioles

Question 21

Cleavage furrows form in which type of cells?

Answer 21

animal cell

Question 22

why is it important to replicate DNA?

Answer 22

in order for genetic information to be transferred into daughter cells