Cell Cycle Practice Questions Flashcards
Which process is used by prokaryotic cells to divide?
o A) Mitosis
o B) Meiosis
o C) Binary fission
o D) Cytokinesis
C) Binary fission
In which phase of the eukaryotic cell cycle does DNA replication occur?
o A) G1 phase
o B) S phase
o C) G2 phase
o D) M phase
o B) S phase
What happens during the G0 phase of the cell cycle?
o A) Cells divide rapidly
o B) Cells exit the cell cycle and stop dividing
o C) Cells prepare for mitosis
o D) DNA is replicated
B) Cells exit the cell cycle and stop dividing
Following DNA replication, which structure is responsible for holding sister
chromatids together?
o A) Centriole
o B) Nucleus
o C) Spindle fibers
o D) Centromere
D) Centromere
What occurs during metaphase in mitosis?
o A) Chromosomes condense
o B) Chromosomes attach to spindle fibers
o C) Chromosomes align at the metaphase plate
o D) Sister chromatids separate
C) Chromosomes align at the metaphase plate
In which phase do sister chromatids move to opposite poles of the cell?
o A) Prophase
o B) Metaphase
o C) Anaphase
o D) Telophase
C) Anaphase
What is the primary function of astral microtubules? (animals only)
o A) To attach chromosomes to kinetochores
o B) To position and control the length of the spindle
o C) To form the metaphase plate
o D) To move chromatids during Anaphase
B) To position and control the length of the spindle
Which of the following occurs during cytokinesis?
o A) Chromosomes condense
o B) Chromosomes align at the metaphase plate
o C) The cell divides its cytoplasm into two daughter cells
o D) The spindle apparatus disassembles
o C) The cell divides its cytoplasm into two daughter cells
Which of the following stages occurs immediately after G1 in the cell cycle?
A) G0
B) S phase
C) G2 phase
D) Cytokinesis
B) S phase
What happens during the S phase of the cell cycle?
A) The cell grows
B) DNA is synthesized and replicated
C) Chromosomes condense
D) The nuclear envelope breaks down
B) DNA is synthesized and replicated
What is the function of kinetochore microtubules during mitosis?
A) They condense the chromatin
B) They attach to chromosomes and move them around
C) They control spindle length
D) They form the contractile ring during cytokinesis
B) They attach to chromosomes and move them around
Which of the following processes is associated with G0 phase?
A) DNA replication
B) Active cell division
C) Terminal differentiation
D) Chromosome condensation
C) Terminal differentiation
Which one of the below is responsible for pulling sister chromatids apart during
anaphase?
A) Centromeres
B) Microfilaments
C) Kinetochore microtubules
D) Nuclear envelope
C) Kinetochore microtubules
Which occurs during prophase in mitosis?
A) Chromosomes align at the metaphase plate
B) Chromosomes condense and the nuclear envelope begins to break down
C) Sister chromatids are pulled to opposite poles
D) The spindle disappears and the nuclear envelope reforms
B) Chromosomes condense and the nuclear envelope begins to break down
In a eukaryotic cell, what is the result of DNA replication during S phase?
A) Two identical daughter cells
B) Formation of two sister chromatids
C) Chromatin condensation
D) Spindle fiber formation
B) Formation of two sister chromatids
In which phase do the nuclear envelope reforms around the daughter nuclei?
A) Prophase
B) Anaphase
C) Telophase
D) Metaphase
C) Telophase
Which structure in plant cells is involved in cytokinesis?
A) Cleavage furrow
B) Cell plate
C) Kinetochore
D) Centrosome
B) Cell plate
What is the role of non-kinetochore microtubules during mitosis?
A) They move chromosomes to opposite poles
B) They attach to the plasma membrane to mediate spindle positioning
C) They help elongate the spindle during anaphase by sliding apart
D) They form the cleavage furrow
C) They help elongate the spindle during anaphase by sliding apart
Which of the following describes a diploid cell?
A) A cell with one complete set of chromosomes
B) A cell that has undergone cytokinesis
C) A cell with two sets of chromosomes
D) A cell with replicated
C) A cell with two sets of chromosomes
How do prokaryotic cells divide?
A) Mitosis
B) Binary fission
C) Meiosis
D) Budding
B) Binary fission
During which phase do the centrosomes migrate to opposite poles of the cell?
A) Prophase
B) Metaphase
C) Telophase
D) Anaphase
A) Prophase
What is the function of the contractile ring during cytokinesis in animal cells?
A) It forms spindle fibers
B) It pinches the cell membrane to separate daughter cells
C) It holds sister chromatids together
D) It aligns chromosomes at the metaphase plate
B) It pinches the cell membrane to separate daughter cells
What is the constricted region of a chromosome that links sister chromatids called?
A) Kinetochore
B) Centromere
C) Centrosome
D) Cleavage furrow
B) Centromere
In plants, how does cytokinesis occur differently from animals?
A) It starts from the outside and moves inward
B) It forms a contractile ring of microfilaments
C) Vesicles fuse to form a cell plate between daughter nuclei
D) It involves kinetochore microtubules pulling the membrane apart
C) Vesicles fuse to form a cell plate between daughter nuclei
Which of the following statements best distinguishes homologous chromosomes from
sister chromatids?
o A) Homologous chromosomes are identical copies of each other, while sister
chromatids are non-identical copies of the same chromosome.
o B) Homologous chromosomes carry the same genes but may have different alleles,
while sister chromatids are identical copies of the same chromosome produced during
DNA replication.
o C) Homologous chromosomes are formed after DNA replication, while sister
chromatids exist independently of replication.
o D) Homologous chromosomes are found only in haploid cells, while sister chromatids
are found in both diploid and haploid cells.
o B) Homologous chromosomes carry the same genes but may have different alleles,
while sister chromatids are identical copies of the same chromosome produced during
DNA replication.
