Hello. This question is incomplete. The full question is:
"Which statement best describes cancer cells? A. They grow as a single layer of cells. B. They cease to reproduce after 20–50 mitotic divisions. C. They reproduce only when needed to replace missing cells. D. They are not regulated by contact inhibition. "
Answer:
D. They are not regulated by contact inhibition.
Explanation:
The set of more than 100 cells that have their disordered growth in common, which invade tissues and organs, can spread to other regions of the body, becoming a metastasis, is called cancer. These cells tend to be very aggressive and uncontrollable, determining the formation of tumors.
These cancer cells are not regulated by inhibiting contact. This type of inhibition occurs when glycocalyx emits chemical signals that interrupt mitosis through physical contacts between cells in the same tissue. When this property is lost or modified, disorderly cell growth occurs, thus forming tumors.
