Multiple Choice Questions and Answers on Cell Cycle
Question 1 : The G0 phase is
- a permanent state of all body cells
- the state of most cells in an animal body
- another name for interphase
- all of the above
Answer : 2
Question 2 : How many chromatids are there in a duplicated chromosome?
- One
- Two
- Three
- Four
Answer : 2
Question 3 : The term homologous chromosomes
- refers to replications of the same chromosome
- is another name for sister chromatids
- must be haploid
- means a pair of chromosomes of the same kind, such as sex chromosomes
Answer : 4
Question 4 : At the center of the cell cycle control system is Cdk, a protein that
- is phosphorylated to become active
- binds to different cyclins
- is only active during mitosis
- manufactures growth factors
Answer : 2
Question 5 : Each chromosome contains two chromatids by the end of the __________ phase in the life cycle of a human cell.
- C
- G
- M
- S
Answer : 4
Question 6 : Which of the following is the primary growth phase of a cell?
- G1
- G2
- M
- G0
Answer : 1
Question 7 : Cells which no longer divide (such as certain specialized cells found in the human brain) remain in which phase of the cell cycle?
- Prophase
- S phase
- G0 Phase
- Gl Phase
Answer : 3
Question 8 : The cell cycle is controlled in most cells by
- time (after a certain length of time the cell divides)
- a series of checkpoints
- cell size (when the cell reaches a certain size, it divides)
- different cells exhibit different control strategies
Answer : 4
Question 9 : How many chromatids does a diploid body cell contain just prior to cell division?
- 23
- 46
- 69
- 92
Answer : 4
Question 10 : DNA replication is controlled at which of the following checkpoint?
- G1
- G2
- M
- S
Answer : 1
Question 11 : Which of the following begins when pairs of sister chromatids align in the center of the cell?
- Anaphase
- Interphase
- Metaphase
- Prophase
Answer : 3
Question 12 : Which of the following is the normal cell cycle, primarily regulated at checkpoints?
- Metaphase in mitosis
- Anaphase, G1 boundary
- G1-S boundary
- S-G2 boundary
Answer : 3
Question 13 : The phase of mitosis which is associated with the formation of the nuclear envelope, is
- prophase
- metaphase
- anaphase
- telophase
Answer : 4
Question 14 : At the __________ checkpoint, cell growth is controlled.
- C
- G1
- G2
- S
Answer : 2
Question 15 : A nuclear envelope forms around each set of sister chromatids in
- prophase
- metaphase
- anaphase
- telophase
Answer : 4
Question 16 : In which of the following phase preparations for genome separation are made?
- C
- G1
- G2
- M
Answer : 4
Question 17 : Cdks bind with __________ , enabling the Cdks to function as enzymes.
- MPF
- cyclins
- histones
- p53
Answer : 2
Question 18 : Which of the following is not a part of a human chromosome in any phase?
- Centriole
- Histone
- Nucleosome
- Centromere
Answer : 1
Question 19 : During which phase, a cleavage furrow is formed in animal cells?
- C
- G1
- G2
- M
Answer : 1
Question 20 : In which phase, each chromosome replicates to produce two sister chromatids?
- interphase
- metaphase
- anaphase
- telophase
Answer : 1
Question 21 : Microtubules grow from the poles to kinetochores of each chromatid during
- prophase
- metaphase
- anaphase
- telophase
Answer : 1
Question 22 : Which of the following triggers the division of activated T lymphocytes?
- FGF
- Interlukin 2
- PDGF
- Erythroprotein
Answer : 2
Question 23 : The term, not related to mitosis is
- gametes
- chromosomes
- DNA replication
- somatic cells
Answer : 1
Question 24 : What structure forms as a network of protein cables during cell division?
- Spindle
- Aster
- Kinetochore
- Chromatid
Answer : 1
Question 25 : A centromere is
- another name for kinetochore
- the structure to which microtubules attach
- a constriction on a chromosome bound to a disk
- all of the above
Answer : 4
Question 26 : Which of the following statements about mitosis is incorrect?
- The daughter nuclei are genetically identical to the parent nucleus
- Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
- Chromosomes separate during anaphase when the kinetochore microtubules shorten as they depolymerize
- Chromosomes move to the metaphase plate using motor proteins, a kind of kinesin, attached to spindle fibers
Answer : 2
Question 27 : In the cell cycle replication of the genome occurs in the
- G1 phase
- G2 phase
- M phase
- S phase
Answer : 4
Question 28 : At which of the following check point, mitosis is controlled?
- G1 phase
- G2 phase
- M phase
- S phase
Answer : 2
Question 29 : The centromeres move toward the poles in __________ .
- anaphase
- interphase
- metaphase
- prophase
Answer : 1
Question 30 : Which phase of mitosis is associated with separation of chromatids?
- anaphase
- interphase
- metaphase
- prophase
Answer : 1
Question 31 : Sequences that correctly describes the cell cycle is
- -> G1-> G2 -> S -> mitosis -> cytokinesis ->
- -> S -> G2 -> mitosis -> cytokinesis -> G1 ->
- ->cytokinesis-> mitosis -> G1 -> S -> G2 ->
- -> G1 ->S -> G2 -> cytokinesis -> mitosis ->
Answer : 2
Question 32 : Which of the following from a blood clot stimulates the growth of cells in the healing process?
- EGF
- PDGF
- MPF
- NGF
Answer : 2
Question 33 : The spindle forms in the
- G1 phase
- G2 phase
- M phase
- S phase
Answer : 3
Question 34 : Which phase of mitosis is associated with chromosomes aligned at the center of the cell and centromeres divide?
- anaphase
- interphase
- metaphase
- prophase
Answer : 3
Question 35 : The event(s) which does not occur during interphase, is/are
- Chromatin condenses
- Protein Synthesis
- Organelles replication
- DNA replication
Answer : 1
Question 36 : In prokaryotes, just before the cell divides, the two daughter genomes are attached side by side to the
- cell membrane
- replication origin
- centromeres
- equatorial plate
Answer : 1