The series of events that cells go through as they grow and divide is the cell cycle. Select ONE option from each of the three sections below to complete a claim about the statemen... The series of events that cells go through as they grow and divide is the cell cycle. Select ONE option from each of the three sections below to complete a claim about the statement above. Part A - Claim: Which of the following correctly describes the steps that take place during this cycle? During the synthesis phase, cells divide, and DNA is duplicated. During the G1 phase, cells are growing and metabolically active. During the G2 phase, DNA is replicated in preparation for cell division. During the mitotic phase, cellular organelles are replicated for the new cell. Part B - Evidence: Why are various checkpoints located with the cell cycle? To monitor the growth of a cell. To signal the beginning of cytokinesis and mitosis. To identify possible mutations within the DNA of a cell. To serve as a place for cells to remain metabolically active, yet not divide. Part C - Rationale: Why are cancer cells able to divide more quickly than healthy cells? Cancer cells do not spend time in interphase. Cancer cells are able to divide because they do not require G1 or G2 phases. Cancer cells undergo meiosis instead of mitosis, leading to an increase in daughter cells. Cancer cells do not require growth factors and rates of division do not decrease due to cell numbers.
Understand the Problem
The question is asking for a detailed exploration of the cell cycle, including its phases and checkpoints, as well as the differences in division rates between cancer cells and healthy cells.
Answer
G1 phase is for growth and metabolism. Checkpoints monitor growth. Cancer cells lack growth factors, enabling rapid division.
Part A: During the G1 phase, cells are growing and metabolically active. Part B: Checkpoints monitor the growth of a cell. Part C: Cancer cells divide quickly because they do not require growth factors and rates of division do not decrease due to cell numbers.
Answer for screen readers
Part A: During the G1 phase, cells are growing and metabolically active. Part B: Checkpoints monitor the growth of a cell. Part C: Cancer cells divide quickly because they do not require growth factors and rates of division do not decrease due to cell numbers.
More Information
The cell cycle includes phases where the cell grows, DNA is replicated, and cell division occurs. Checkpoints ensure normal growth and detect DNA errors. Cancer cells bypass these regulations, allowing uncontrolled division.
Tips
A common mistake is confusing the phases of the cell cycle. Remember, G1 is for growth, S for DNA synthesis, G2 for preparation, and M for mitosis.
Sources
- Phases of the cell cycle (article) | Khan Academy - khanacademy.org
- Solved: The series of events that cells go through as they grow and ... - gauthmath.com
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