Name the Phase
Cells undergo mitosis and cytokinesis during this phase.
What is M Phase?
CDK binds to this protein to move the cell cycle forward.
The sister chromatids separate during this phase.
What is anaphase?
Chromatids join at this point.
This enzyme breaks the hydrogen bonds between DNA's nitrogenous bases.
What is helicase?
Cells spend the most time in this phase.
What is interphase?
This protein can cause apoptosis if there is irreparable DNA damage.
p53
Chromatin condenses into chromosomes during this phase.
This permeable structure surrounds the nucleus.
What is the nuclear envelope?
This enzyme synthesizes new DNA strands.
Cells prepare for mitosis in this phase.
Cells in G0 that have irreversible DNA damage are called this.
What is senescent?
Chromosomes line up at the midline of the cell in this phase.
Metaphase
These paired cylindrical structures anchor the spindle to the chromosome.
What are the centrioles?
This strand is synthesized toward the replication fork.
What is the leading strand?
Cells can exit this phase for G0.
What is G1 phase?
This checkpoint ensures DNA has been replicated.
What is the G2 checkpoint?
Telophase
This structure essential to animal cell cytokinesis begins to form during telophase.
What is the contractile ring?
Nucleosomes stack together to form this.
What is chromatin?
Primase is active during this phase.
What is S Phase?
Brain and spinal cord injuries heal slowly because the cells are in this G0 state.
What is quiescent?
The M-Phase checkpoint occurs during this phase of mitosis.
What is metaphase?
This protein surrounds the centromere.
What is the kinetochore?
This enzyme extends the length of the protective structure at the ends of chromosomes.
What is telomerase?