Lesson 6 - PHASES OF THE CELL CYCLE
Quiz by Jerome Meñale
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- Q1
Which phase of the cell cycle is primarily responsible for DNA replication?
M phase
G2 phase
G1 phase
S phase
20s - Q2
What happens at the G1 checkpoint?
DNA replication is checked for errors.
Chromosomes are aligned at the metaphase plate.
The cell's size and nutrient availability are assessed.
The cell prepares for mitosis.
20s - Q3
Which protein regulates progression through the cell cycle checkpoints?
Elastin
Myosin
Actin
Cyclin
20s - Q4
What is the role of the G0 phase?
DNA synthesis
Protein synthesis
Preparation for mitosis
Exit from the cell cycle
20s - Q5
During which phase does the cell grow and duplicate organelles?
G1 phase
M phase
S phase
G2 phase
20s - Q6
Which checkpoint ensures that chromosomes are properly aligned before segregation?
G1 checkpoint
S checkpoint
M checkpoint
G2 checkpoint
20s - Q7
If a cell does not receive the "go-ahead" signal at the G1 checkpoint, what happens?
The cell bypasses S phase.
The cell proceeds to mitosis.
The cell undergoes apoptosis.
The cell enters G0.
20s - Q8
What phase involves the separation of sister chromatids?
Metaphase
Anaphase
Telophase
Prophase
20s - Q9
Which type of cells are least likely to re-enter the cell cycle?
Intestinal cells
Nerve cells
Liver cells
Skin cells
20s - Q10
What happens if the metaphase checkpoint fails?
The cell divides without proper chromosome alignment.
The cell undergoes apoptosis.
DNA replication halts.
The cell exits to G0.
20s - Q11
Which of the following is NOT an event that occurs during interphase?
Chromosome alignment
DNA replication
Cell growth
Organelle duplication
20s - Q12
Which of the following is NOT a main checkpoint in the cell cycle?
Metaphase checkpoint
Apoptosis checkpoint
G2 checkpoint
G1 checkpoint
20s - Q13
Which of the following is TRUE if a cell bypasses the G1 checkpoint with DNA damage?A. Increased cancer riskB. Unregulated cell divisionC. Correct chromosome alignmentD. Repair of the damage
B, C
C, D
A, B
All
20s - Q14
Which of the following does NOT ensure the fidelity of cell division?
Cyclin-CDK complexes
G1 checkpoint
Chromosome alignment at metaphase
DNA repair enzymes
20s - Q15
Which of the following is NOT part of the mitotic phase?
Interphase
Prophase
Anaphase
Metaphase
20s