ONS/ONCC Chemotherapy
Immunotherapy Certificate
Exam 2025 Questions And
Answers
What is the cell cycle
The cell cycle is the ordered series of processes of DNA
replication and mitosis or cell division
What are the two phases of the cell cycle
interphase and mitotic phase
During interphase:
,A typical cell spends most of its life in interphase, it is the
metabolic phase where the cell obtains nutrients and
metabolizes them, grows and replicates its DNA in
preparation of mitosis. It has the following three steps:
1: First growth phase (G1 or first gap)
2: Synthesis phase (S phase)
3:Second growth phase ( G2 or second gap)
First Growth Phase (G1 or first gap)
-cells increase in size
-reproduce RNA
-"quality assurance" test that the cell will be ready to
synthesis DNA
-Length of time is variable, can be from hours to days
Synthesis Phase (S phase)
-DNA replicates
-Results in the formation of identical pairs of DNA
,(chromatids) attached to a centromere
-lasts 10-20 hours
Second Growth Phase ( G2 or second gap)
-RNA and protein Synthesis
- last 2-10 hours
Mitotic Phase (M phase)
-Replicated chromosomes are aligned, separated, and
move into 2 new, identical daughter cells
-takes about 30-60 minutes
How many steps in the Mitotic Phase
4 steps in the mitotic phase
- Prophase
- Anaphase
- Metaphase
-Telophase
Cytokenesis ( C phase)
division of cytoplasm and organelles
, Major points of cell regulation are entry and exit from
-G1 checkpoint
-S Phase
-G2 checkpoint
-M phase
Restriction Point
-The transition from the resting phase into an actively
dividing phase (G0-G1) is a point where cellular
transformation can occur
-During this time, cells pass through a transition phase
known as a restriction point
-Extracellular growth factors trigger reentry into G1, and
GF are required to send the cells past the restriction
point, or the point of no return
G0 Phase (resting phase)
-After mitosis, cells may enter back into the G1 phase or
go into a resting phase, known as G0
Immunotherapy Certificate
Exam 2025 Questions And
Answers
What is the cell cycle
The cell cycle is the ordered series of processes of DNA
replication and mitosis or cell division
What are the two phases of the cell cycle
interphase and mitotic phase
During interphase:
,A typical cell spends most of its life in interphase, it is the
metabolic phase where the cell obtains nutrients and
metabolizes them, grows and replicates its DNA in
preparation of mitosis. It has the following three steps:
1: First growth phase (G1 or first gap)
2: Synthesis phase (S phase)
3:Second growth phase ( G2 or second gap)
First Growth Phase (G1 or first gap)
-cells increase in size
-reproduce RNA
-"quality assurance" test that the cell will be ready to
synthesis DNA
-Length of time is variable, can be from hours to days
Synthesis Phase (S phase)
-DNA replicates
-Results in the formation of identical pairs of DNA
,(chromatids) attached to a centromere
-lasts 10-20 hours
Second Growth Phase ( G2 or second gap)
-RNA and protein Synthesis
- last 2-10 hours
Mitotic Phase (M phase)
-Replicated chromosomes are aligned, separated, and
move into 2 new, identical daughter cells
-takes about 30-60 minutes
How many steps in the Mitotic Phase
4 steps in the mitotic phase
- Prophase
- Anaphase
- Metaphase
-Telophase
Cytokenesis ( C phase)
division of cytoplasm and organelles
, Major points of cell regulation are entry and exit from
-G1 checkpoint
-S Phase
-G2 checkpoint
-M phase
Restriction Point
-The transition from the resting phase into an actively
dividing phase (G0-G1) is a point where cellular
transformation can occur
-During this time, cells pass through a transition phase
known as a restriction point
-Extracellular growth factors trigger reentry into G1, and
GF are required to send the cells past the restriction
point, or the point of no return
G0 Phase (resting phase)
-After mitosis, cells may enter back into the G1 phase or
go into a resting phase, known as G0
