5.1

Question 1

how many stages are in the cell cycle?

Answer 1

3 stages

Question 2

what are the three stages of the cell cycle

Answer 2

interphase, mitosis,cytokenisis

Question 3

what is the proteins job during the cell cycle

Answer 3

proteins monitor the activities of the cell at checkpoints in the cell cycle

Question 4

what can result/occur in the cell cycle

Answer 4

cancer may result when errors occur in the cell cycle

Question 5

interphase

Answer 5

is the longest stage in the cell cycle which cells carry out the functions nessasary for survival and cells that divides prepare for reproduction

Question 6

mitosis

Answer 6

mitosis diveieds the duplicated contents of the cells nucleus into 2 equal parts

Question 7

cytokinesis

Answer 7

separates the 2 nuclei and cell contents into 2 daughter cells

Question 8

what is the first stage of interphase

Answer 8

growth and preparation

Question 9

growth and preparation

Answer 9

a cell increases in size and makes the proteins and molecules nessasary for the cell to function. some organelles begin to duplicate

Question 10

What is the second stage of interphase

Answer 10

replication

Question 11

replication

Answer 11

DNA copies or makes a replica of itself in a process called replication. the cell copies the 3 billion base pairs or DNA information in the nucleus of the cell

Question 12

What is the third stage of interphase

Answer 12

continued growth and preperation

Question 13

Continued growth and preparation

Answer 13

the DNA replicates and the cell continues to grow and is active making materials like proteins for the new cells that will be formed after cytogenesis also known as daughter cells. the final phase before cell division. organelles like mitochondria and chloroplasts will be duplicated.
Cell makes materials such as proteins and duplicates organelles such as mitochondria and chloroplasts.

Question 14

What is the first stage of the cell cycle?

Answer 14

interphase

Question 15

What is the second stage of the cell cycle?

Answer 15

mitosis

Question 16

what are 4 key terms in the mitosis stage?

Answer 16

Sister chromatids, centromere, spindle fibres,centrioles

Question 17

sister chromatids

Answer 17

DNA molecules that replicated during interphase join together to form these. identical copies of chromosomes

Question 18

centromere

Answer 18

joins the sister chromatids of a replicated chromosome

Question 19

spindle fibres

Answer 19

tiny tube like structures made at protein (in animal and plant cells)

Question 20

centrioles

Answer 20

are organelles that organize spindle fibres during mitosis in animal cells they begin to move apart.

Question 21

what are the 5 stages of mitosis

Answer 21

early prophase, late prophase, metaphase, anaphase, telophase

Question 22

early prophase

Answer 22

the first stage of mitosis or meiosis in eukaryotic cell division, during which the nuclear envelope breaks down and strands of chromatin form into chromosomes. spindle fibres and centrioles start to form. but the nucleus starts to go away

Question 23

late prophase

Answer 23

the spindle fibres complete forming the chromosome attache to the spindle fibres at there centromeres and the nuclear membrane disappear

Question 24

metaphase

Answer 24

the juggling actions of spindle fibres pulls the x shape chromosomes into a single line across the middle/equator of the cell.

Question 25

anaphase

Answer 25

the stage in mitosis or meiosis following metaphase in which the daughter chromosomes move away from each other to opposite ends of the cell.

Question 26

telophase

Answer 26

the final stage of meiosis or mitosis, in which the separated chromosomes reach the opposite poles of the dividing cell and the nuclei of the daughter cells form around the two sets of chromosomes.

Question 27

what is the third stage of the cell cycle

Answer 27

cytokinesis

Question 28

cytokinesis *****

Answer 28

final stage of the cell cycle, separates the 2 nuclei into 2 daughter cells. these new cells are identical to the original parent cell. in animal cells, the cell membrane pinches together to divide the cell cytoplasm and organelles.

Question 29

what are three reasons that cells will not divide if..

Answer 29

1. not enough nutrients to support cell growth 2. DNA within the nucleus has not been replicated 3. DNA is damaged

Question 30

-checkpoints- in the cell cycle

Answer 30

special -proteins- at these checkpoints monitor cell activities and send this -information- to the -nucleus.- the -nucleus- instructs the -cell- whether or not to -divide-