NEW
Font size
WorksheetsWEEK 8
Total questions: 35
Worksheet time: 18mins
What are the main stages of the cell cycle?
Interphase and mitosis
Interphase, mitotic phase, and cytokinesis
Mitosis and cytokinesis
G1, S, and G2
During which stage does a cell spend the majority of its life?
M phase
Interphase
Cytokinesis
Metaphase
Which stage of interphase occurs before DNA replication?
G0
G1
S
G2
What happens during the S phase of interphase?
Cell growth and organelle duplication
DNA synthesis and chromosome replication
Preparation for mitosis
Cytokinesis
What is the primary purpose of the G2 phase?
DNA replication
Cell growth and accumulation of materials
Final preparations for mitosis
Chromosome separation
Which phase of the cell cycle includes both mitosis and cytokinesis?
G1 phase
Interphase
M phase
S phase
What is the name of the arrested phase where a cell does not continue the cycle?
G1
S
G2
G0
What is the correct sequence of mitosis phases?
Prophase, Metaphase, Anaphase, Telophase
Interphase, Metaphase, Anaphase,Telophase
Prophase, Anaphase, Metaphase,Telophase
Metaphase, Prophase, Anaphase,Telophase
What happens during prophase?
Chromosomes condense and spindle fibers form
Chromosomes align at the center of the cell
Chromosomes separate and move to opposite poles
Nuclear envelope reforms
At which phase do chromosomes align at the spindle equator?
Prophase
Metaphase
Anaphase
Telophase
During which phase do sister chromatids separate?
Prophase
Metaphase
Anaphase
Telaphase
What is the final phase of mitosis before cytokinesis?
Prophase
Metaphase
Anaphase
Telophase
Which of the following happens in cytokinesis?
DNA replication
The cytoplasm divides to form two daughter cells
Chromosomes condense
Spindle fibers attach to centromeres
In animal cells, what structure helps organize the mitotic spindle?
Nucleolus
Centrosome
Lysosome
Ribosome
What is the main function of the cell cycle control system?
To speed up cell division
To ensure the cell cycle occurs in the correct order
To eliminate unnecessary cells
To replicate DNA continuously
Which of the following is NOT a cell cycle checkpoint?
G1 checkpoint
G2 checkpoint
Mitotic stage checkpoint
Cytokinesis checkpoint
If a cell fails the G1 checkpoint, what happens?
It continues the cycle
It enters G0
It undergoes mitosis
It immediately dies
What must occur for a cell to pass the G2 checkpoint?
DNA replication must be complete
The cell must be large enough
All chromosomes must be aligned at the equator
The cytoplasm must divide
The mitotic stage checkpoint ensures that:
DNA is completely replicated
All chromosomes are attached to spindle fibers
The nuclear envelope has disappeared
Cyclins have been destroyed
What type of molecules regulate cell cycle progression?
Carbohydrates
Cyclins
Lipids
Enzymes
What external factor can stimulate cell division?
Cyclins
Hormones and growth factors
DNA mutations
Cytokinesis
What is cancer?
A normal part of the cell cycle
Uncontrolled cell division
A process of cell repair
A phase of mitosis
What is the difference between benign and malignant tumors?
Benign tumors spread, malignant tumors do not
Malignant tumors are non-invasive
Benign tumors remain localized, malignant tumors can spread
There is no difference
Which type of gene, when mutated, can cause cancer by overexpressing cell division?
Oncogenes
Tumor suppressor genes
Cyclins
Centrosomes
Which gene normally limits mitosis but can lead to cancer when inactivated?
Proto-oncogene
Tumor suppressor gene
Oncogene
Growth factor gene
What is differentiation?
Cell division
The process by which cells become specialized
DNA replication
Cytokinesis
What can a totipotent cell become?
Only muscle cells
Only nerve cells
Any cell type in the body
Only blood cells
What type of stem cells can become a limited number of cell types?
Totipotent
Pluripotent
Unipotent
Multipotent
What type of cell division allows stem cells to self-renew?
Mitosis
Meiosis
Cytokines
Apoptosis
What is apoptosis?
Cell growth
Programmed cell death
Uncontrolled cell division
Stem cell renewal
Which of the following is an example of apoptosis?
Cancer spreading
Peeling of damaged skin after sunburn
Uncontrolled mitosis
Cell differentiation
How does apoptosis contribute to fetal development?
It helps cells divide
It removes unnecessary structures like webbing between fingers
It causes cancer
It strengthens tissues
What is the main difference between apoptosis and necrosis?
Apoptosis is programmed; necrosis is accidental
Necrosis is beneficial, while apoptosis is harmful
Necrosis occurs in healthy cells
Apoptosis is caused by infection
What happens to a cell if it loses the ability to undergo apoptosis?
It differentiates into other cells
It may become cancerous
It stops dividing
It shrinks and dies
What field of study uses stem cells to treat diseases?
Oncology
Regenerative medicine
Pathology
Microbiology
