RE2

Question 1

The 5 stages of the cell cycle

Answer 1

1. Gap 1(G1): cell growth and normal functions
2. DNA synthesis(S): DNA replicates
3. Gap 2: Additional Growth
4. Mitosis: Division of the nucleus
5. Cytokinesis: is a part of cell division that is separate from mitosis

Question 2

what is meiosis

Answer 2

Meiosis is a special type of cell division that results in 4 genetically different haploid cells.

meiosis involves two cell divisions unlike mitosis which only has 1.

Question 3

Meiosis 2

Answer 3

Meiosis 2 begins with 2 haploid parent cells and results in 4 haploid daughter cells

Question 4

what are the stages of mitosis?

Answer 4

-Prophase[prequel]
-Metaphase[middle]
-Anaphase
-Telophase[twins]

Question 5

Mitosis and meiosis both…

Answer 5

start with a single parent cell and produce new cells

Question 6

What is INTERPHASE and what happens during INTERPHASE

Answer 6

-Interphase is divided into 3 stages,G1,S and G2. these stages result in DNA replication and cell growth

Question 7

Telophase

Answer 7

two new nuclei form and daughter chromosomes uncoil into chromatins.

Question 8

draw out the 4 stages of mitosis using these terms: Nuclear membrane, cell membrane, chromosome, chromatid,
centriole, spindle fibre[ answer in physical booklet

Question 9

What is the stage the cell spends most of its time?

Answer 9

Interphase

Question 10

Anaphase

Answer 10

sister chromatids separate and are pulled to opposite sides of the cell.

Question 11

What is mitosis?

Answer 11

Mitosis is a type of cell division that results in two daughter cells that have the same amount of chromosomes and Identical DNA to the parent cell

Question 12

Meiosis 1

Answer 12

begins with one diploid parent cell and results in 2 haploid daughter cells

Question 13

what is the cell cycle?

Answer 13

• the cell cycle is the cell’s life cycle

Question 14

what is the final splitting of cells called?

Answer 14

cytokinesis

Question 15

Metaphase

Answer 15

Chromosomes line up in the center of the cell. Spindle fibres attach to centromeres.

Question 16

In humans:

Answer 16

Mitosis results in cells with 46 CHROMOSOMES

Meiosis results in cells with 23 CHROMOSOMES

Question 17

Matching statements(match either meiosis, mitosis or both)

-produces genetically identical cells
-results in cells with 23 chromosomes in humans
-occurs in all body cells
-involves 2 cell divisions

Answer 17

-Mitosis

-Meiosis

-Mitosis

-Meiosis

Question 18

meiosis only occurs in__________

Answer 18

Sexual reproduction

Question 19

Cytokinesis

Answer 19

complete separation of the cytoplasm, 2 daughter cells are formed

Question 20

Prophase

Answer 20

Nuclear membrane breaks
down, chromosomes condense and spindle fibres(protein wires)form

Question 21

some cells, like____________ cells have NO nucleus.

Answer 21

Prokaryotes

Question 22

Mitosis:
results-
cells are-
occurs in-

Answer 22

-2 diploid cells
-genetically identical
-body cells

Question 23

what must happen before cell division occurs?

Answer 23

DNA must duplicate

Question 24

Meiosis
Results-
cells are-
occurs in-

Answer 24

-4 haploid cells
-genetically different
-sex cells