Cell cycle stages

Question 1

the nucleolus begins to disintegrate

Answer 1

prophase and prometaphase

Question 2

chromatids separate at the beginning of this stage

Answer 2

anaphase

Question 3

the chromosomes are lined up at the center of the cell

Answer 3

metaphase

Question 4

a chromatid from each pair is attracted to each pole of the cell

Answer 4

anaphase

Question 5

the reappearance of the nucleolus is noticed

Answer 5

telophase

Question 6

separate spindle fibers become attached to the centromeres of each chromosome

Answer 6

prophase and prometaphase

Question 7

separate chromosomes are not clearly visible but the chromatin has become thicker and shorter

Answer 7

prophase and prometaphase

Question 8

the nucleolus has completely disappeared

Answer 8

prophase and prometaphase

Question 9

there is one set of chromosomes at each end of the cell

Answer 9

telophase

Question 10

in animal cells, the cell membrane pinches together

Answer 10

cytokinesis

Question 11

the chromosomes lose their distinct form and once again appear as a mass of chromatin

Answer 11

telophase

Question 12

in animal cells, the centrioles separate

Answer 12

prophase and prometaphase

Question 13

nuclear envelope breaks apart

Answer 13

prometaphase

Question 14

new nuclear membranes form around the chromosomes

Answer 14

telophase