Review questions, Oct 28

 

1. Identify different phases of the cell cycle in Fig 1 and 2 using the following terms:

metaphase                 telophase                   interphase                  prophase                    anaphase

mitotic phase             G1 phase                   G2 phase                   S phase                     

 

2. At which phases the followings occur?  Use the terms listed above.
1. Daughter chromosomes are completely separated and start to uncoil. Nuclear envelops are formed around the chromosomes.
2. Chromosomes start to coil.  The two centrioles migrate towards the opposite directions poles.
3. Chromosomes are aligned at the center of the cell. 
4. Cells duplicate their chromosomes.
5. Mitotic spindles start to form from the centrioles.
6. Chromosomes move towards the centre of the cell.
7. Sister chromosomes are separated from each other and now called daughter chromosomes.  Daughter chromosomes move towards the opposite poles.
8. Each chromosome is composed of two chromatids (sister chromatids) in preparation for mitosis.

 

3. A chemical which disrupts microtubules would interfere with________.
1. chromosome uncoiling
2. chromosome coiling
3. chromosome replication
4. mitotic spindle
5. formation of nuclear envelop

 

4. Division of the cytoplasm is called _______.  Animal cells divide by forming ______.  Plant cells divide by forming ________.
1. cytokinesis ................ the cell plate .............. the cleavage furrow
2. cytokinesis ................ the cleavage furrow ... the cell plate
3. meiosis......................  the cell plate .............. the cleavage furrow
4. meiosis ....................... the cleavage furrow .. the cell plate

 

 

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