Question

1. Complete the table by identifying each component in the Cell Cycle illustrated below.                        

                                                                                                                                          (5 marks)

Label shown on diagram	Identification as it pertains to Cell Cycle
A
B
C
D
E
F
G
H
I
J

2. If 2n = 6, provide a labelled diagram of an animal cell representing ‘F’ from the above diagram.

Hint: Cell before ‘F’ and then when cell is in ‘F’                                                    (7 marks)                                                                                                                                        

Answer 1

Complete the table by identifying each component of cell cycle:

A - Interphase

B- G1 phase

C- S phase

D - G2 phase

E -Prophase

F - Metaphase

G- Anaphase

H - Telophase

I - Mitosis

J- Cytokinesis

• Interphase - Preparatory phase or intermitosis
• G1 phase - Also called as growth phase; Resume biosynthetic activities of the cell at faster pace
• S phase -  DNA relication; the amount of DNA in the cell has doubled
• G2 phase- Period of protein synthesis and rapid cell growth to prepare the cell for mitosis
• Prophase - Chromosome condensed, nuclear envelope is not apparent, early mitotic spindle appears
• Metaphase - Thick coiled chromosome each with 2 chromatids are lined up the metaphase plate
• Anaphase -  Chromatid of each chromosome have separated and move towards poles
• Telophase - The chromatids are at poles and became more diffusive. Nuclear envelope reformed.
• Mitosis- M phase- nuclear division or karyokinesis.  
• Cytokinesis - Seperation of cytosol. Result in 2 daughter cells