Cell Division

Question 1

Define cell continuity

Answer 1

One cells developed from other existing cells

Question 2

To state the composition of a chromosome

Answer 2

A section of dna and protein

Question 3

To name the location of chromosomes in a cell

Answer 3

Nucleus

Question 4

Define the term haploid cell and name an example

Answer 4

Has one set of chromosomes
Sperms and egg

Question 5

Define the term diploid cell and name an example

Answer 5

two sets of chromosome

Question 6

To be able to draw a diagram of haploid and diploid cells

Answer 6

Anki

Question 7

To define the term homologous pair

Answer 7

Two chromosomes similar genes

Question 8

To list two stages of the cell cycle and which stage was the shortest

Question 9

Define mitosis

Answer 9

When the nucleus of the cell divides into 2 identical nuclei

Question 10

To state function of mitosis in single celled organisms

Answer 10

Reproduction

Question 11

To state function of mitosis in multi-celled organisms (animals

Answer 11

Growth and repair

Question 12

To list the four stages of mitosis in the correct order

Answer 12

Prophase
Metaphase
Anaphase
Telophase

Question 13

To draw and label a cell in the prophase

Answer 13

Anki

Question 14

To describe in detail the prophase

Answer 14

Chromatin start to contract and become visible doubles stranded structures

The nucleolus disappears

Spindle Fibers appear in the cytoplasm

Nuclear membrane begins to break down

Question 15

To drawW and label a cell in the metaphase

Answer 15

Anki

Question 16

To describe in detail the metaphase

Answer 16

Nuclear membrane completely breaks down

Spindle fibers attached to each centromere at the end of the cell

The chromosomes line up across the equator of the cell

Question 17

Define a centromere

Answer 17

The point at which chromosomes are attached together in a double stranded structure

Question 18

To draw and label a cell in the anaphase

Answer 18

Anki

Question 19

To describe in detail the anaphase

Answer 19

Spindle fibers contract

The double stranded chromosome, separates and pulled to end of the cell

Question 20

To draw and label a cell in the telophase

Answer 20

Anki

Question 21

To describe in detail the telophase

Answer 21

Spindle fibers breakdown

Nucleolus begins to reappear

The chromosomes at each pole elongates to form chromatin

A nuclear membrane forms round each mass of chromatin, at each end of the cell

The two nuclear are now identical

Question 22

To name the feature that forms allowing animal cells to spilt in two

Answer 22

Cleavage forrow

Question 23

To name the feature that forms allowing plant cells to spilt in two

Answer 23

Cell plate.

Question 24

To define the term cancer

Answer 24

When The cell loses control the rate of mitosses and the amount of times it occurs

Forms, a mass of cells called a tumour which can be benign or malignant

Question 25

To define the terms carcinogen and oncogene

Answer 25

Normal genes that are altered to form cancer causing genes are called oncogenes. Cancer-causing agents are carcinogens.

Question 26

To be able to distinguish between a benign tumour and a malignant tumour

Answer 26

Benign tumour Sales will stop dividing after some time Not life threatening , they do not invade other cells Malignant's tumours uncontrolled division of tumours.They invade other cells

Question 27

To define meiosis

Answer 27

Where a nucleusdivids into 4 new nuclei that are not identical qnd contain only half the number of chromosomes as the parent nucleus

Question 28

State two functions of meiosis

Answer 28

Produces gametes allowing serial reproduction Allows for greater variation within a species

Question 29

Name the location of where meiosis occurs in males and females

Answer 29

Occurs in the testes in males And ovaries in females

Question 30

To be able to distinguish between mitosis and meiosis (two differences)

Answer 30

Mitosis Same number of chromosomes in the parent and daughter cell Meiosis Half the number of chromosomes in the daughter cell compared to the parent cell Mitosis One cell divide into two new cells Meiosis One Cell divides into four new cells Mitosis Genes in new cells are identical to parents cells Meiosis Genes in new cells are different to parents cells