10.3 Regulating the Cell Cycle – Flashcards

Unlock all answers in this set

Unlock answers
question
Cyclins
answer
proteins that regulate the timing of the cell cycle in eukaryotic cells
question
What are Internal Regulators?
answer
Regulatory proteins that work inside the cell. They allow the cell cycle to proceed when certain events have occurred within a cell
question
What are external regulators?
answer
Regulatory proteins that work outside the cell. Different external regulators can stimulate the cell cycle, slow the cell cycle down, or stop it.
question
Growth Factors
answer
External regulators that stimulate or speed up the cell cycle
question
Apoptosis
answer
programmed cell death that plays a key role in the development of tissues and organs
question
Cancer
answer
Disorder in which cells divide uncontrollably, forming a mass of cells called a tumor
question
Tumor
answer
Mass of cells
question
What causes cancers?
answer
defects in genes that regulate cell growth and division
question
What are treatments for cancer?
answer
Removal (surgery) of cancerous tumors. Radiation Chemotherapy
question
What does radiation do?
answer
It's a treatment for cancer and works by interfering with the copying of DNA in multiplying cancer cells
question
How does chemotherapy work?
answer
It uses chemicals to kill cancer cells
question
What happens once apoptosis is triggered?
answer
A cell proceeds to self destruct
question
What happens if chromosomes have not attached to spindle fibers during metaphase?
answer
An internal regulatory protein will prevent the cell from entering anaphase
question
What type of proteins regulate the tiing of the cell cycle in eukaryotic cells?
answer
Cyclins
question
Does cell division speed up or slow down when the healing process nears completion?
answer
Slows down
question
When cells come into contact with other cells do they tend to continue dividing or do they tend to stop?
answer
Stop
question
What are the two basic types of tumors?
answer
Malignant and benign
question
What is a benign tumor?
answer
Noncancerous tumor that does not spread into surrounding tissues or to other parts of the body
question
What is a malignant tumor?
answer
Cancerous tumor that will invade and destroy healthy tissue around it or in other parts of the body
question
Why can cancer be life threatening?
answer
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.
Get an explanation on any task
Get unstuck with the help of our AI assistant in seconds
New