ONS ONCC PRACTICE SCRIPT UPDATED
2026 TESTED SOLUTIONS
⫸ Focusing on Cellular Structure and Function Answer:
⫸ The Normal Cell Cycle Answer: -The cell cycle refers to the ordered
seres of processes of DNA replication and mitosis, or cell division
-Cell nucleus regulates these processes by gathering and processing
complexes molecular information
⫸ Interphase and Mitotic Phase Answer: Cell division produces two
identical cells through these two major phases
⫸ During interphase: Answer: Cell grows and DNA is replicated
through the following three steps:
1: First growth phase (G1 or first gap)
2: Synthesis phase (S phase)
,3:Mitotic Phse (M phase)
⫸ First Growth Phase (G1 or first gap) Answer: -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) Answer: -DNA replicates
-Results in the formation of identical pairs of DNA (chromatids)
-which are attached a t the centromere
-lasts 2-10 hours
⫸ Mitotic Phase (M phase) Answer: -Replicated chromosomes are
aligned, separated, and move into 2 new, identical daughter cells
,-takes about 30-60 minutes
⫸ Major points of cell regulation are entry and exit from Answer: -G1
checkpoint
-S Phase
-G2 checkpoint
-M phase
⫸ Restriction Point Answer: -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) Answer: -After mitosis, cells may enter
back into the G1 phase or go into a resting phase, known as G0
-Most cells in the human body reside in G0
⫸ -Exceptions to this are those that are (Resting in G0 phase) Answer: -
Exceptions to this are those that are metabollically active, such as
-granulocytes
-and the epithelium of the GI tract
⫸ Cell Cycling Time Answer: Amount of time from mitosis to mitosis
⫸ Cell cycle video and image Answer:
http://highered.mheducation.com/sites/0072495855/student_view0/chapt
er2/animation__how_the_cell_cycle_works.html
⫸ Check points in the Cell Cycle: Keeping it All Under Control
Answer: -The cell cycle is carefully controlled through a series of
checkpoints
2026 TESTED SOLUTIONS
⫸ Focusing on Cellular Structure and Function Answer:
⫸ The Normal Cell Cycle Answer: -The cell cycle refers to the ordered
seres of processes of DNA replication and mitosis, or cell division
-Cell nucleus regulates these processes by gathering and processing
complexes molecular information
⫸ Interphase and Mitotic Phase Answer: Cell division produces two
identical cells through these two major phases
⫸ During interphase: Answer: Cell grows and DNA is replicated
through the following three steps:
1: First growth phase (G1 or first gap)
2: Synthesis phase (S phase)
,3:Mitotic Phse (M phase)
⫸ First Growth Phase (G1 or first gap) Answer: -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) Answer: -DNA replicates
-Results in the formation of identical pairs of DNA (chromatids)
-which are attached a t the centromere
-lasts 2-10 hours
⫸ Mitotic Phase (M phase) Answer: -Replicated chromosomes are
aligned, separated, and move into 2 new, identical daughter cells
,-takes about 30-60 minutes
⫸ Major points of cell regulation are entry and exit from Answer: -G1
checkpoint
-S Phase
-G2 checkpoint
-M phase
⫸ Restriction Point Answer: -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) Answer: -After mitosis, cells may enter
back into the G1 phase or go into a resting phase, known as G0
-Most cells in the human body reside in G0
⫸ -Exceptions to this are those that are (Resting in G0 phase) Answer: -
Exceptions to this are those that are metabollically active, such as
-granulocytes
-and the epithelium of the GI tract
⫸ Cell Cycling Time Answer: Amount of time from mitosis to mitosis
⫸ Cell cycle video and image Answer:
http://highered.mheducation.com/sites/0072495855/student_view0/chapt
er2/animation__how_the_cell_cycle_works.html
⫸ Check points in the Cell Cycle: Keeping it All Under Control
Answer: -The cell cycle is carefully controlled through a series of
checkpoints
