Answer the following questions, which relate to events in the cell cycle - Leaving Cert Biology - Question c - 2013
Question c
Answer the following questions, which relate to events in the cell cycle.
(i) What name is applied to the period of the cell cycle in which division is not taking p... show full transcript
Worked Solution & Example Answer:Answer the following questions, which relate to events in the cell cycle - Leaving Cert Biology - Question c - 2013
Step 1
What name is applied to the period of the cell cycle in which division is not taking place?
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Answer
The period of the cell cycle in which division is not taking place is called Interphase.
Step 2
Give a cellular process that occurs during this period in which the nucleus is not dividing.
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Answer
During interphase, several important cellular processes can occur, including replication, growth, or protein synthesis. Additionally, processes like respiration or photosynthesis may take place in certain cell types.
Step 3
Draw a labelled diagram to show the position of the chromosomes during metaphase of mitosis in a nucleus in which 2n = 6.
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Answer
In the diagram, illustrate the following:
The spindle apparatus or outline of the cell.
The chromosomes aligned on the equator of the spindle.
Indicate 6 double chromosomes (each consisting of two sister chromatids).
Labels to include:
Chromosomes
Spindle
Centromere
Cell membrane
Step 4
State a function of one of the structures, other than chromosomes, that you have labelled in your diagram of metaphase.
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Answer
One important function of the spindle is to assist in the separation of sister chromatids during mitosis, ensuring that each new daughter cell receives the correct number of chromosomes.
Step 5
How does the structure carry out this function?
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Answer
The spindle fibers attach to the centromeres of the chromosomes. When the spindle fibers shorten, they pull the sister chromatids apart toward opposite poles of the cell, allowing for accurate distribution into the daughter cells.
Step 6
What term is used for the group of disorders in which control has been lost over the rate of mitosis?
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Answer
The group of disorders characterized by a loss of control over the rate of mitosis is referred to as Cancer.
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