Bio12.5 Flashcards
What stage happens after metaphase?
Anaphase
External factors
Influence cell division and include specific growth factors
Growth factors
Released by certain cells and stimulate other cells to divide
PDGF-stand for
Platelet-derived growth factor
PDGF
Made by blood cell fragments called platelets
Crowded cells will stop dividing in______ _____
Density-dependent inhibition
What is an example of contact inhibition
Density-dependent inhibition
In cancer, what action is lost?
Density-dependent inhibition
Cancer cells may make their own __ ___.
Growth factors
Cancer cells have an abnormal ___ ___ control system.
Cell cycle
Most cells exhbit ___ ____ to divide.
Anchorage dependence
What must cells be attached to to divide?
Substratum to exhibit anchorage dependance
A normal cell is converted to a cancerous cell by a process called _____
Transformation
What do cancer cells that are not eliminated by the immune system form?
Tumors
Tumor
Masses of abnormal cells within otherwise normal tissue
Benign tumor
Remain only at the original site, the lump
Malignant tumors
Invade surrounding tissues
What do malignant tumors do to export cancer cells to other parts of the body and forma additional tumors?
Metastasize
How can localized tumors be treated?
High-energy radiation that damages DNA in cancer cells
What is used to treat metastatic cancers?
Chemotherapies that target the cell cycle
