Use your knowledge of mitosis to answer the following questions:
(a) What is the role of mitosis in single-celled organisms?
(b) What medical term is used for the group of disorders in which certain cells lose normal control of mitosis?
(c) Suggest a possible cause of one of the group of disorders referred to in (b) - Leaving Cert Biology - Question 2 - 2011
Question 2
Use your knowledge of mitosis to answer the following questions:
(a) What is the role of mitosis in single-celled organisms?
(b) What medical term is used for the ... show full transcript
Worked Solution & Example Answer:Use your knowledge of mitosis to answer the following questions:
(a) What is the role of mitosis in single-celled organisms?
(b) What medical term is used for the group of disorders in which certain cells lose normal control of mitosis?
(c) Suggest a possible cause of one of the group of disorders referred to in (b) - Leaving Cert Biology - Question 2 - 2011
Step 1
What is the role of mitosis in single-celled organisms?
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Answer
The role of mitosis in single-celled organisms is primarily for reproduction. During this process, a single cell divides to form two identical daughter cells, ensuring genetic consistency and continuation of the species.
Step 2
What medical term is used for the group of disorders in which certain cells lose normal control of mitosis?
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Answer
The medical term used for this group of disorders is cancer.
Step 3
Suggest a possible cause of one of the group of disorders referred to in (b).
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Answer
A possible cause of cancer could be exposure to a carcinogen, such as tobacco smoke or radiation, which can lead to uncontrolled cell division.
Step 4
Name the stage of mitosis in which the chromosomes are located at the equator of the cell and before they begin to separate.
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Answer
The stage of mitosis where chromosomes are located at the equator of the cell is called metaphase.
Step 5
To what are the chromosomes attached in the stage of mitosis referred to in (d)?
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Answer
In metaphase, the chromosomes are attached to the spindle apparatus, specifically to the spindle fibers at their centromeres.
Step 6
Towards the end of mitosis, in what type of cell does a cell plate form?
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Towards the end of mitosis, a cell plate forms in plant cells during cytokinesis.
Step 7
Give one way in which mitosis differs from meiosis.
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Answer
One way in which mitosis differs from meiosis is that mitosis produces two identical daughter cells with the same chromosome number as the parent cell, whereas meiosis produces four genetically diverse daughter cells with half the chromosome number (haploid).
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