Cell Cycle and Regulation Quiz

Explore cell cycle regulation with 17 questions covering checkpoints, proteins, phases, and abnormalities. Test yourself now!

#1

Which phase of the cell cycle involves DNA replication?

G1 phase
S phase
G2 phase
M phase
#2

What is the primary checkpoint for cell cycle regulation?

G1/S checkpoint
G2/M checkpoint
Metaphase checkpoint
Anaphase checkpoint
#3

Which phase of the cell cycle follows mitosis?

G1 phase
S phase
G2 phase
M phase
#4

Which phase of the cell cycle is characterized by rapid cell growth and metabolic activity?

G1 phase
S phase
G2 phase
M phase
#5

Which of the following is NOT a phase of mitosis?

Prophase
Anaphase
Interphase
Telophase
#6

During which phase of the cell cycle do chromosomes condense and become visible?

Interphase
G1 phase
Prophase
Telophase
#7

Which protein complex regulates the progression of the cell cycle by phosphorylating key proteins?

APC/C
MPF
Cdk
Cyclin
#8

What is the function of cyclins in the cell cycle?

To activate Cdk enzymes
To degrade Cdk enzymes
To inhibit cell cycle progression
To promote apoptosis
1 answered
#9

What is the role of the mitotic spindle during cell division?

To organize the chromosomes
To replicate DNA
To produce ATP
To generate cell membrane
#10

What is the primary function of cyclin-dependent kinases (Cdks) in the cell cycle?

To inhibit cell cycle progression
To degrade cyclins
To phosphorylate target proteins
To activate tumor suppressor proteins
#11

What happens during cytokinesis in animal cells?

The nucleus divides into two daughter nuclei
The cytoplasm divides into two daughter cells
Chromosomes condense
Chromatids separate and move to opposite poles
#12

What is the function of the Anaphase-Promoting Complex/Cyclosome (APC/C) during the cell cycle?

To trigger the onset of anaphase
To promote DNA replication
To initiate cytokinesis
To regulate cyclin degradation
1 answered
#13

Which tumor suppressor protein is commonly mutated in many cancers, leading to uncontrolled cell proliferation?

p53
Rb
BRCA1
PTEN
#14

What is the function of the retinoblastoma protein (Rb) in cell cycle regulation?

To inhibit apoptosis
To promote DNA repair
To regulate progression from G1 to S phase
To activate cyclins
1 answered
#15

Which of the following is NOT a potential outcome of cell cycle checkpoint activation?

Cell cycle arrest
Apoptosis
DNA replication
DNA repair
#16

Which enzyme is responsible for dephosphorylating cyclin-dependent kinases (Cdks) to inactivate them?

Cyclin
Cdk-activating kinase
Cdk inhibitor
Cdk-phosphatase
1 answered
#17

Which checkpoint ensures that chromosomes are properly attached to the mitotic spindle before anaphase begins?

G1 checkpoint
G2 checkpoint
Metaphase checkpoint
Anaphase checkpoint
1 answered

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