10.3 Regulating the Cell Cycle
Terms in this set (20)
proteins that regulate the timing of the cell cycle in eukaryotic cells
What are Internal Regulators?
Regulatory proteins that work inside the cell.
They allow the cell cycle to proceed when certain events have occurred within a cell
What are external regulators?
Regulatory proteins that work outside the cell.
Different external regulators can stimulate the cell cycle, slow the cell cycle down, or stop it.
External regulators that stimulate or speed up the cell cycle
programmed cell death that plays a key role in the development of tissues and organs
Disorder in which cells divide uncontrollably, forming a mass of cells called a tumor
Mass of cells
What causes cancers?
defects in genes that regulate cell growth and division
What are treatments for cancer?
Removal (surgery) of cancerous tumors.
What does radiation do?
It's a treatment for cancer and works by interfering with the copying of DNA in multiplying cancer cells
How does chemotherapy work?
It uses chemicals to kill cancer cells
What happens once apoptosis is triggered?
A cell proceeds to self destruct
What happens if chromosomes have not attached to spindle fibers during metaphase?
An internal regulatory protein will prevent the cell from entering anaphase
What type of proteins regulate the tiing of the cell cycle in eukaryotic cells?
Does cell division speed up or slow down when the healing process nears completion?
When cells come into contact with other cells do they tend to continue dividing or do they tend to stop?
What are the two basic types of tumors?
Malignant and benign
What is a benign tumor?
Noncancerous tumor that does not spread into surrounding tissues or to other parts of the body
What is a malignant tumor?
Cancerous tumor that will invade and destroy healthy tissue around it or in other parts of the body
Why can cancer be life threatening?
Rapidly dividing cancer cells take nutrients away from healthy tissues. This leads to a disruption of the proper functioning of body organs, causing illness and possibly death.