The Cell Cycle

Question 1

what is the cell cycle

Answer 1

the stages a cell must go through as it grows and divides

Question 2

what are the three stages of the cell cycle

Answer 2

interphase, mitosis, and cytokinesis

Question 3

what is the order in which a cell goes through each stage of the cell cycle

Answer 3

interphase, mitosis, then cytokinesis

Question 4

what is the basic order of the cell cycle

Answer 4

-cycle begins
-cell grows
-cell receives instructions regarding division
-DNA replicates
-cell prepares to divide
-mitosis
-cytokinesis

Question 5

what is interphase

Answer 5

the longest stage of the cell cycle and period where the cell carries out life activities and prepares for cell division

Question 6

what is DNA like in the interphase stage

Answer 6

very long, thin, invisible stands

Question 7

what is the name for DNA in the interphase stage

Answer 7

chromatin

Question 8

what is mitosis

Answer 8

division of the contents in the nucleus

Question 9

what is cytokinesis

Answer 9

division of the rest of the cell

Question 10

what are the four phases of mitosis

Answer 10

prophase, metaphase, anaphase, and telophase

Question 11

what happens in the prophase

Answer 11

long strands of DNA condense into identical form

Question 12

what is DNA called during all stages of mitosis

Answer 12

chromosomes

Question 13

what is a centromere

Answer 13

it holds two chromatids together

Question 14

what are the two identical strands of chromosomes called

Answer 14

sister chromatid

Question 15

what happens in the metaphase

Answer 15

chromosomes line up in the middle of the cell and spindle fibres fr centrioles attach to centromeres

Question 16

what happens during the anaphase stage

Answer 16

the centromere splits and sister chromatids separate to opposite sides of the cell

Question 17

what is a daughter chromosome

Answer 17

a chromosome formed due to the split of sister chromatids during mitosis

Question 18

what happens during the telophase stage

Answer 18

daughter chromosomes stretch thinner and are no longer visible, new nuclear membrane forms

Question 19

what happens during cytokinesis

Answer 19

the cytoplasm divides and two genetically identical daughter cells are produced

Question 20

what is the difference between cytokinesis in animals and plants

Answer 20

-in animals the membrane is pinched off in centre
-in plants a cell plate forms in middle and becomes new cell wall

Question 21

what do checkpoint in the cycle do

Answer 21

protiens monitor cell activities and messages are sent to the nucleus to say weather or not the cell is ready to divide

Question 22

when should a cell remain in interphase and not divide

Answer 22

-signals tell cell not to divide
-lack of nutrients for cell growth
-DNA has not been replicated
-DNA is damaged