Cell Cycle

Question 1

It takes how many hours to complete a cell cycle

Answer 1

18-24 hours

Question 2

Cell cycle hours breakdown

Answer 2

Interphase:
■ G1 - 5 to 6 hours.
■ S - 10 to 12 hours.
■ G2 - 4 to 6 hours.
○Mitotic Phase - 30 to 45 minutes.

Question 3

Where cell grows and the dna is duplicated to prepare the cell for division

Answer 3

Interphase

Question 4

Primary growth phase

Answer 4

First Gap

Question 5

Smallest period of the cell

Answer 5

First Gap

Question 6

In g1 phase, the cell is very active as it grows and develops

Answer 6

Organlles

Question 7

What undergoes in first gap

Answer 7

• transcription
• translation
• protein synthesis
• increasing size of cytoplasm

Question 8

The DNA Synthesis phase

Answer 8

S phase

Question 9

This is where cells DNA undergoes replication

Answer 9

S phase

Question 10

Secondary growth phase

Answer 10

Second gap

Question 11

Where the cell does not grow or divide

Question 12

Happens after interphase

Answer 12

Mitotic ohase

Question 13

Equational division

Answer 13

Mitosis

Question 14

Result of mitosis

Answer 14

2 genetically indetical daughter cells

Question 15

In mitosis, each daughter cell has _ chromosomes

Answer 15

46

Question 16

Prophase

Answer 16

• chromatin condenses into visible chromosomes
• mitotic spindle appears
• nucelus disappears
• nuclear envelope disappears

Question 17

Helds sister chromatids togethere

Answer 17

Centromere

Question 18

Prometaphase

Answer 18

• more condensed chromosomes
• each chromatid has now kinetochore
• nuclear envelope fragments

Question 19

Metaphase

Answer 19

-Chromosomes align at center
- no seperation
- M checkpoint!

Question 20

Alignment of chromosomes in the middle

Answer 20

Metaphase plate

Question 21

Anaphase

Answer 21

• sis chromatidsnow seperate
• cell elongates

Question 22

Shortest stage

Answer 22

Anaphase

Question 23

Telophase

Answer 23

• nuclear membrane appears
• nucleolus appears
• mitotic spindle disappears
• chromosome revert to chromatin

Question 24

Reductional division

Answer 24

Meiosis

Question 25

In meiosis, each daughter cell has _ chromosomes

Answer 25

23

Question 26

Process of homologous chromosomes pairing up to prepare for crossing over

Answer 26

Synapsis

Question 27

Zipper like structure that holds homologous chromosomes together

Answer 27

Synaptonemal complex

Question 28

Point of crossing over

Answer 28

Chiasmata

Question 29

Protein that holds sister chromatids together

Answer 29

Cohesins

Question 30

Are there enough nutrients

Answer 30

G1 checkpoint

Question 31

Enough organelles?

Answer 31

G1 checkpoint

Question 32

Is the volume of cytoplasm sufficient?

Answer 32

G1 checkpoint

Question 33

What do u check in g1 checkpoints

Answer 33

- nutrients - size of cell - presence of other cells

Question 34

A cell that continues to divide even if its dense

Answer 34

Unregulated cell

Question 35

If g1 is not satisfied, it will go back to

Answer 35

G0 phase

Question 36

Was it properly replicated?

Answer 36

G2 checkpoint

Question 37

Are the bases properly bonded?

Answer 37

G2 checkpoint

Question 38

If g2 is not satisfied it will undergo

Answer 38

Apoptosis, death of cell

Question 39

Checks the dna that was replicated

Answer 39

G2 phase

Question 40

Checks if the microtubules are properly attached

Answer 40

M checkpoint

Question 41

Cells that divide constantly and rapidly throughout life

Answer 41

Skin cells Epithelial cells Bone marrow cells Spermatogonia

Question 42

Cells that divide under certain circumstances

Answer 42

Live cells Epithelial cells surrounding egg

Question 43

Cells that normally do not divide in adulthood

Answer 43

Nerve cells Osteocytes Muscle cells

Question 44

Activates certain regulatory proteins that initiate specific events within the cell, such as DNA replication or formation of the mitotic spindle.

Answer 44

Cyclin kinases

Question 45

All living cells come from the division of

Answer 45

Previously existing cells except for a fertilized egg

Question 46

For reproduction

Answer 46

Unicellular cells

Question 47

For development, growth, and repair

Answer 47

Multicellular organisms