Cell Signaling
Mitosis
The Cell Cycle
100
A signaling molecule is also referred to as this
What is a ligand?
100
The nuclear membrane dissolves during this phase
What is prophase?
100
The main event of S phase
What is DNA replication?
200
Child birth is an example of this type of feedback mechanism
What is positive feedback?
200
During this phase, one cell will contain two nuclei
What is telophase?
200
The order of the phases of interphase
What are G1, S, and G2?
300
During cell signaling, this occurs after reception.
What is transduction?
300
The phase of mitosis seen here.
What is prophase?
300
A cell enters this phase when it no longer needs to continue dividing. It carries out normal functions until it is signaled to return to the cell cycle.
What is G0?
400
A healthy cell is signaled to do this if there is irreparable damage to its DNA
What is apoptosis (programmed cell death)?
400
These structures attach to the centromeres of chromosomes to pull them apart
What are spindle fibers?
400
DNA is in this form during interphase, before the DNA condenses into chromosomes
What is chromatin?
500
Adding this molecule to a protein kinase activates the protein kinase, and removing this same molecule deactivates the protein kinase.
What is a phosphate?
500
A parent cell begins the cell cycle with 20 chromosomes. The cell will have this many chromosomes during anaphase.
What is 40?
500
These enzymes are responsible for regulating the cell cycle
What are cyclin-dependent kinases (CDKs)?