Which of the following is true concerning cancer cells?
A) They exhibit density-dependent inhibition when growing in culture.
B) They must be attached to a substrate to divide in culture.
C) They evade the normal controls that trigger programmed cell death.
D) They stop dividing in culture when growth factors are depleted.

Question

Quizplus · Accepted Answer

Cancer cells evade the normal controls that trigger programmed cell death, allowing them to continue dividing despite abnormal growth and potential harm to the organism. Option A (density-dependent inhibition) and option D (growth factor depletion) are both normal mechanisms for controlling cell growth and division, which cancer cells do not adhere to. Option B (attachment to substrate) is a characteristic of normal cells in culture, but cancer cells can often grow without substrate attachment.

Which of the Following Is True Concerning Cancer Cells