#1
Which phase of the cell cycle is characterized by cell growth and DNA replication?
Prophase
Interphase
Metaphase
Telophase
#2
What is the main function of mitosis?
To produce gametes
To repair damaged tissues
To produce genetically identical daughter cells
To reduce chromosome number by half
#3
What is the role of the spindle apparatus during cell division?
It helps in DNA replication
It assists in cytokinesis
It separates sister chromatids
It synthesizes new proteins
#4
Which phase of meiosis involves the alignment of homologous chromosomes at the cell's equator?
Prophase I
Metaphase I
Anaphase I
Telophase I
#5
What is the purpose of the kinetochore during cell division?
To organize the spindle fibers
To anchor spindle fibers to the centromere
To separate sister chromatids
To condense chromatin
#6
Which enzyme is responsible for unwinding the DNA double helix during DNA replication?
RNA polymerase
DNA ligase
Helicase
Topoisomerase
#7
During which phase of mitosis do sister chromatids separate and move towards opposite poles of the cell?
Prophase
Metaphase
Anaphase
Telophase
#8
Which checkpoint in the cell cycle ensures that DNA is undamaged before replication and division?
G1 checkpoint
G2 checkpoint
M checkpoint
S checkpoint
#9
Which organelle is responsible for organizing the spindle fibers during cell division?
Nucleus
Endoplasmic reticulum
Centrosome
Golgi apparatus
#10
In meiosis, crossing over occurs during which phase?
Prophase I
Metaphase I
Anaphase I
Telophase I
#11
What is the significance of cytokinesis in cell division?
It ensures proper separation of sister chromatids
It allows for the formation of two daughter cells
It ensures DNA replication is complete
It ensures proper alignment of chromosomes
#12
Which of the following is NOT a type of cell division?
Mitosis
Meiosis
Binary fission
Apoptosis
#13
Which phase of the cell cycle involves cell growth and preparation for division?
G1 phase
S phase
G2 phase
M phase
#14
What is the primary function of the G2 checkpoint in the cell cycle?
To ensure DNA replication is complete
To check for DNA damage before mitosis
To ensure proper alignment of chromosomes
To ensure proper separation of sister chromatids
#15
Which of the following is a characteristic of both mitosis and meiosis?
Results in two daughter cells
Involves only one cell division
Occurs in somatic cells
Leads to genetic variation
#16
What is the significance of apoptosis in multicellular organisms?
To prevent cell division
To repair damaged DNA
To remove unwanted or damaged cells
To increase cell proliferation