CELL CYCLE

Question 1

Do cells live forever

Answer 1

no

Question 2

Are cells continuously growing

Answer 2

yes

Question 3

Why do cells need to divide

Answer 3

so organisims can grow, repair old cells and reproduce

Question 4

what are the 4 phases of cell cycle

Answer 4

1) G1
2) S phase
3) G2 Phase
4) M phase -mitosis but you call it M phase

Question 5

stages of mitosis

Answer 5

Interphase
prophase
metaphase
anaphase
telophase and cytokinesis

this is where cell division happens shawty

Question 6

G1 phase

Answer 6

cells produce protein and organelles. If healthy they move on to next phase

Question 7

S phase

Answer 7

Cell makes a copy of DNA

Question 8

G2 Phase

Answer 8

Cell produces organelles and structures for cell division

Question 9

M phase

Answer 9

Cells energy is devoted to cell division. There are 4 phases prophase, Metaphase,Anaphase,telophase

Question 10

Mitosis

Answer 10

Where a single cell divides into two identical cells.
These cells contain the same number of chromosomes and genetic info as original cell.

The genetic info of the cell is contained on chromosomes which are long pieces of coiled DNA and protein’s

Question 11

Can cell division be affected by external influences and if so what?

Answer 11

Altitude or sunlight

Question 12

Are cells continually dying and if so what is this process called?

Answer 12

Apoptosis - programmed cell death

Question 13

Cancer cells divide uncontrollably? Yes or no?

Answer 13

Yes

Question 14

Damage of cells can occur from factors such as

Answer 14

Sunlight and smoking

Question 15

Do cancer cells undergo apoptosis

Answer 15

No

Question 16

Normal cells reproduce for about

Answer 16

50-60 cells

Question 17

what even is the cell cycle

Answer 17

a series of events that take place in a cell as it divides and grows

Question 18

why does DNA have to be replicated before mitosis begins

Answer 18

to get an exact copy of the original cell and so there will be DNA for both daughter cells

Question 19

what happens in interphase

Answer 19

DNA has been duplicated in the S phase and appears as threads in nucleus

replicates its chromosomes, and prepares for cell division.

Question 20

what happens in late and early Prophase

Answer 20

early- The chromatin condenses to form chromosomes. The centrioles move towards the poles and spindle fibres form

late) The nuclear envelope breaks down. Each chromosome is connected to a spindle fibre at its centromere

Question 21

what happens in the metaphase

Answer 21

the chromosomes line up at center of cell

Question 22

what happens in anaphase

Answer 22

the sister chromatids separate into individual chromosomes and move to opposite poles

extra
A sister chromatid refers to the identical copies formed by the DNA replication of a chromosome,

Question 23

what happens in telophase and cytokinesis

Answer 23

the Mitotic spindle breaks down, and two new nuclei form.
telophase
a nuclear membrane forms around each set of chromosomes to separate the nuclear DNA from the cytoplasm.

The chromosomes lose their distinct shape. The cytoplasm and the cell membrane pinch in half to form two new daughter cells

Question 24

where is the genetic info stored on a cell

Answer 24

chromosomes which are long pieces of coiled up DNA

Question 25

What is a stem cell

Answer 25

They are unspecialized cells that evolve into specialized cells to perform particular tasks