Podcast
Questions and Answers
Which of the following are considered chemical factors affecting cell proliferation?
Which of the following are considered chemical factors affecting cell proliferation?
Benign tumors are always harmful and lead to cancer.
Benign tumors are always harmful and lead to cancer.
False
What happens to a cell if its surface area to volume ratio becomes too low?
What happens to a cell if its surface area to volume ratio becomes too low?
It will divide to maintain proper nutrient exchange.
_______ is the process of forming new blood vessels.
_______ is the process of forming new blood vessels.
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Match the following terms with their descriptions:
Match the following terms with their descriptions:
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Study Notes
Cell Division Regulation
- Cell division is controlled by various factors, including other organisms, surface area-to-volume ratio, physical factors, and chemical factors.
Surface Area to Volume Ratio
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Optimal substance exchange requires a large surface area-to-volume ratio.
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If the ratio is too small, cells divide to increase the ratio, ensuring efficient nutrient intake and waste removal.
Physical Factors
- Temperature, radiation, and other physical factors affect cell division.
Chemical Factors
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Growth factors, such as VEGF (vascular endothelial growth factor), stimulate cell division, while anti-mitotic molecules inhibit it.
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Hormones (e.g., human growth hormones, sex hormones) also play a role.
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Certain drugs, like thalidomide and paclitaxel, influence cell division, often in medicinal contexts.
Uncontrolled Cell Division
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Uncontrolled cell division (e.g., in tumors) can lead to various health issues.
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Mutations and exposure to harmful factors can contribute to uncontrolled cellular division.
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Description
Explore the key factors that regulate cell division, including the importance of the surface area-to-volume ratio, various physical and chemical influences, and the impact of hormones and drugs. Understand how uncontrolled cell division can lead to health issues like tumors.
