Question

question 4 1 pts
which is true about cancer cells:
○ they are routed for apoptosis
○ they are likely the result of proto-oncogenes
○ they are always caused by a mutated p53 gene
○ they undergo necrosis
○ they are cells that have become disregulated in their cell cycle as a result of many possible factors

Explanation:

• Apoptosis is programmed cell death; cancer cells evade this, so the first option is false.
• Proto-oncogenes promote normal cell growth; their mutation to oncogenes can contribute to cancer, but the option's wording is incomplete (it should specify mutated proto-oncogenes), so this is incorrect.
• Mutated p53 is a common cause of cancer, but not the only one, so "always caused" makes the third option false.
• Necrosis is unplanned cell death; cancer cells avoid death rather than undergoing necrosis, so the fourth option is false.
• Cancer development involves multiple factors (genetic mutations, environmental exposures) that disrupt normal cell cycle regulation, making this option correct.

Answer:

They are cells that have become disregulated in their cell cycle as a result of many possible factors