Cancer spreading Failing to respond to the signals that control normal cell behavior and growth, cancer cells grow and divide in an uncontrolled manner, invading normal tissues and organs and eventually spreading throughout the body. True or False
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Cancer cells do not respond to the body's normal stop and go signals for growth and differentiation, becoming "deaf" to the community of cells that make up the human body. In this sense, which of the following are ways that a cancer cell becomes "deaf"? Cancer cells may make their own growth factor to stimulate their own growth Cancer cells may activate a receptor that signals growth in the absence of a growth factor Cancer cells may produce pro-apoptotic proteins to signal their own death Cancers cells may express cyclins that override cell cycle arrest controls Cancer cells can transmit vascular endothelial growth signals to recruit their own network of blood vessels Cancer cells up-regulate surface proteins that enable the immune system to detect them
Sri K.
define cancer, then compare/contrast cancer with the normal mitotic cell division cycle. Include a description of checkpoints in your answer.
Adi S.
One difference between cancer cells and normal cells is that cancer cells \begin{equation}\begin{array}{l}{\text { (A) are unable to synthesize DNA. }} \\ {\text { (B) are arrested at the S phase of the cell cycle. }} \\ {\text { (C) continue to divide even when they are tightly packed }} \\ {\text { together. }} \\ {\text { (D) cannot function properly because they are affected }} \\ {\text { by density-dependent inhibition. }}\end{array}\end{equation}
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