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Cell Cycle and Cell Division

81 Questions
All Exams NEET AIIMS
2016 NEET MCQ
NEET 2016 Phase 1
In meiosis crossing over is initiated at
A.
zygotene
B.
diplotene
C.
pachytene
D.
leptotene.
2015 NEET MCQ
AIPMT 2015
Arrange the following events of meiosis in correct sequence
(i)  Crossing over
(ii)  Synapsis
(iii)  Terminalisation of chiasmata
(iv)  Disappearance of nucleolus
A.
(i), (ii), (iii), (iv)
B.
(ii), (iii), (iv), (i)
C.
(ii), (i), (iv), (iii)
D.
(ii), (i), (iii), (iv)
2015 NEET MCQ
AIPMT 2015 Cancelled Paper
Select the correct option.
Column ${\rm I}$ Column ${\rm I}$${\rm I}$
A. Synapsis aligns homologous (i) Anaphase ${\rm I}$${\rm I}$
B. Synthesis of RNA and protein (ii) Zygotene
C. Action of enzymes recombinase (iii) G2-phase
D. Centromeres do not separate
but chromatids move towards
opposite poles		 (iv) Anaphase ${\rm I}$
(v) Pachytene
A.
(A) - (i);  (B) - (ii);  (C) - (v);  (D) - (iv)
B.
(A) - (ii);  (B) - (iii);  (C) - (iv);  (D) - (v)
C.
(A) - (ii);  (B) - (i);  (C) - (iii);  (D) - (iv)
D.
(A) - (ii);  (B) - (iii);  (C) - (v);  (D) - (iv)
2015 NEET MCQ
AIPMT 2015 Cancelled Paper
A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has
A.
twice the number of chromosomes and four times the amount of DNA
B.
four times the number of chromosomes and twice the amount of DNA
C.
twice the number of chromosomes and twice the amount of DNA
D.
same number of chromosomes but twice the amount of DNA.
2014 NEET MCQ
AIPMT 2014
During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?
A.
G0 and G1
B.
G1 and S
C.
Only G2
D.
G2 and M
2014 NEET MCQ
AIPMT 2014
The enzyme recombinase is required at which stage of meiosis?
A.
Pachytene
B.
Zygotene
C.
Diplotene
D.
Diakinesis
2014 NEET MCQ
AIPMT 2014
In 'S' phase of the cell cycle
A.
amount of DNA doubles in each cell
B.
amount of DNA remains same in each cell
C.
chromosomes number is increased
D.
amount of DNA is reduced to half in each cell.
2013 NEET MCQ
NEET 2013 (Karnataka)
During meiosis I, the chromosomes start pairing at
A.
zygotene
B.
pachytene
C.
diplotene
D.
leptotene.
2013 NEET MCQ
NEET 2013 (Karnataka)
During the metaphase stage of mitosis, spindle fibres attach to chromosomes at
A.
kinetochore
B.
both centromere and kinetochore
C.
centromere, kinetochore and areas adjoining centromere
D.
centromere.
2013 NEET MCQ
NEET 2013 (Karnataka)
A stage of mitosis is shown in the diagram.
Which stage is it and what are its characteristics? NEET 2013 (Karnataka) Biology - Cell Cycle and Cell Division Question 46 English
A.
Anaphase - Centromeres split and chromatids separate and start moving away.
B.
Late prophase - Chromosomes move to spindle equator.
C.
Metaphase - Spindle fibers attached to kinetochores, centromeres split and chromatids separate.
D.
Metaphase - Chromosomes moved to spindle equator, chromosomes made up of two sister chromatids.
2013 NEET MCQ
NEET 2013
The complex formed by a pair of synapsed homologous chromosomes is called
A.
bivalent
B.
axoneme
C.
equatorial plate
D.
kinetochore.
2013 NEET MCQ
NEET 2013
A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics. NEET 2013 Biology - Cell Cycle and Cell Division Question 47 English
A.
Telophase         Endoplasmic reticulum and nucleolus not reformed yet.
B.
Telophase         Nuclear envelope reforms,Golgi complex reforms.
C.
Late anaphase         Chromosomes move away from equatorial plate, Golgi complex not present.
D.
Cytokinesis         Cell plate formed, mitochondria distributed between two daughter cells.
2012 NEET MCQ
AIPMT 2012 Mains
Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres.
A.
Metaphase I
B.
Metaphase II
C.
Anaphase I
D.
Anaphase II
2012 NEET MCQ
AIPMT 2012 Prelims
Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage? AIPMT 2012 Prelims Biology - Cell Cycle and Cell Division Question 41 English
A.
Prophase of Mitosis
B.
Both prophase and metaphase of mitosis
C.
Prophase I during meiosis
D.
Prophase -II during meiosis
2012 NEET MCQ
AIPMT 2012 Prelims
During gamete formation, the enzyme recombinase participates during
A.
metaphase I
B.
anaphase II
C.
prophase I
D.
prophase II.
2011 NEET MCQ
AIPMT 2011 Mains
At metaphase, chromosomes are attached to the spindle fibres by their
A.
satellites
B.
secondary constrictions
C.
kinetochores
D.
centromeres.
2011 NEET MCQ
AIPMT 2011 Prelims
Select the correct option with respect to mitosis.
A.
Chromatids separate but remain in the centre of the cell in anaphase
B.
Chromatids start moving towards opposite poles in telophase
C.
Golgi complex and endoplasmic reticulum are still visible at the end of prophase.
D.
Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.
2010 NEET MCQ
AIPMT 2010 Prelims
During mitosis, ER and nucleolus begin to disappear at
A.
late prophase
B.
early metaphase
C.
late metaphase
D.
early prophase.
2010 NEET MCQ
AIPMT 2010 Prelims
Which stages of cell division do the following figures A and B represent respectively? AIPMT 2010 Prelims Biology - Cell Cycle and Cell Division Question 45 English
A.
A $ \to $ Prophase, B $ \to $ Anaphase
B.
A $ \to $ Metaphase, B $ \to $ Telophase
C.
A $ \to $ Telophase, B $ \to $ Metaphase
D.
A $ \to $ Late anaphase, B $ \to $ Prophase
2009 NEET MCQ
AIPMT 2009
Given below is a schematic break-up of the phases/stages of cell cycle. Which one of the following is the correct indication of the stage/phase in the cell cycle?
AIPMT 2009 Biology - Cell Cycle and Cell Division Question 58 English
A.
C - karyokinesis
B.
D - synthetic phase
C.
A - cytokinesis
D.
B - metaphase
2009 NEET MCQ
AIPMT 2009
Synapsis occurs between
A.
mRNA and ribosomes
B.
spindle fibres and centromere
C.
two homologous chromosomes
D.
a male and a female gamete.
2005 NEET MCQ
AIPMT 2005
At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell?
A.
During G2 stage of prophase
B.
During S-phase
C.
During entire prophase
D.
During telophase
2004 NEET MCQ
AIPMT 2004
In the somatic cell cycle
A.
in G1 phase DNA content is double the amount of DNA present in the original cell
B.
DNA replication takes place in S phase
C.
a short interphase is followed by a long mitotic phase
D.
G2 phase follows mitotic phase.
2004 NEET MCQ
AIPMT 2004
If you are provided with root-tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into?
A.
Metaphase
B.
Telophase
C.
Anaphase
D.
Prophase
2004 NEET MCQ
AIPMT 2004
Which one of the following precedes reformation of the nuclear envelope during M phase of the cell cycle?
A.
Decondensation fromchromosomes. and reassembly of the nuclear lamina
B.
Transcription from chromosomes, and reassembly of the nuclear lamina
C.
Formation of the contractile ring, and formation of the phragmoplast
D.
Formation of the contractile ring, and transcription from chromosomes.
2002 NEET MCQ
AIPMT 2002
What is the reason of formation of embryoid from pollen grain in tissue culture medium ?
A.
Double fertilization
B.
Test tube culture
C.
Cellular totipotency
D.
Organogenesis
2002 NEET MCQ
AIPMT 2002
If a diploid cell is treated with colchicine then it becomes : -
A.
Tetraploid
B.
Monoploid
C.
Diploid
D.
Triploid
2002 NEET MCQ
AIPMT 2002
Best material for the study of mitosis in laboratory is
A.
anther
B.
root tip
C.
leaf tip
D.
ovary.
2002 NEET MCQ
AIPMT 2002
Mitotic spindle is mainly composed of which protein?
A.
Actin
B.
Myosin
C.
Tubulin
D.
Myoglobin
2000 NEET MCQ
AIPMT 2000
Spindle fibre unite with which structure of chromosomes?
A.
Chromocentre
B.
Chromomere
C.
kinetochore
D.
Centriole
2000 NEET MCQ
AIPMT 2000
In which stage of cell cycle, DNA replication occurs?
A.
G1-phase
B.
S-phase
C.
G2-phase
D.
M-phase