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Cell Cycle And Cell Division

335 Questions MCQ (Single Correct) Start Allen Test
All Exams Allen Errorless
NEET 2024 Q1 Errorless Critical Thinking MCQ
Spindle fibers attach to kinetochores of chromosomes during
A.
Prophase
B.
Metaphase
C.
Anaphase
D.
Telophase
NEET 2024 Q2 Errorless Critical Thinking MCQ
Following are the stages of cell division
Choose the correct sequence of stages from the options given below
(A) Gap 2 phase
(B) Cytokinesis
(C) Synthesis phase
(D) Karyokinesis
A.
C-E-D-A-B
B.
E-B-D-A-C
C.
B-D-E-A-C
D.
E-C-A-D-B
NEET 2023 Q3 Errorless Critical Thinking MCQ
Among eukaryotes, replication of DNA takes place in
A.
S phase
B.
G1 phase
C.
G2 phase
D.
M phase
NEET 2023 Q4 Errorless Critical Thinking MCQ
The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis
A.
Pachytene
B.
Diplotene
C.
Diakinesis
D.
Zygotene
NEET 2022 Q5 Errorless Critical Thinking MCQ
The appearance of recombination nodules on homologous chromosomes during meiosis characterizes
A.
Sites at which crossing over occurs
B.
Terminalization
C.
Synaptonemal complex
D.
Bivalent
NEET 2022 Q6 Errorless Critical Thinking MCQ
Select the incorrect statement with reference to mitosis
A.
Chromosomes decondense at telophase
B.
Splitting of centromere occurs at anaphase
C.
All the chromosomes lie at the equator at metaphase
D.
Spindle fibres attach to centromere of chromosomes
NEET 2022 Q7 Errorless Critical Thinking MCQ
Regarding meiosis, which of the statements is incorrect
A.
Pairing of homologous chromosomes and recombination occurs in meiosis-I
B.
Four haploid cells are formed at the end of meiosis-II
C.
There are two stages in meiosis, meiosis-I and II
D.
DNA replication occurs in S phase of meiosis-II
NEET 2021 Q8 Errorless Critical Thinking MCQ
Which of the following statements is correct
A.
Fusion of protoplasms between two motile on nonmotile gametes is called plasmogamy
B.
Organisms that depend on living plants are called saprophytes
C.
Some of the organisms can fix atmospheric nitrogen in specialized cells called sheath K cells
D.
Fusion of two cells is called karyogamy
NEET 2021 Q9 Errorless Critical Thinking MCQ
Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature
A.
Zygotene
B.
Diakinesis
C.
Pachytene
D.
Leptotene
NEET 2021 Q10 Errorless Critical Thinking MCQ
The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after S phase
A.
16
B.
4
C.
32
D.
8
NEET 2021 Q11 Errorless Critical Thinking MCQ
The centriole undergoes duplication during
A.
Prophase
B.
Metaphase
C.
G2 phase
D.
S-phase
NEET 2021, 23 Q12 Errorless Critical Thinking MCQ
Match Column-I with Column-II
Column-IColumn-II
(A)M Phase
(B)Gā‚‚ Phase
(C)Quiescent stage
(D)Gā‚ Phase
(E)S phase
(P)Proteins are synthesized
(Q)Inactive phase
(R)Interval between mitosis and initiation of DNA replication
(S)Equational division
(T)DNA replication
A.
A-S, B-Q, C-P, D-R, E-T
B.
A-S, B-P, C-Q, D-R, E-T
C.
A-Q, B-S, C-P, D-R, E-T
D.
A-R, B-Q, C-S, D-P, E-T
NEET 2020 Q13 Errorless Critical Thinking MCQ
Identify the correct statement with regard to G1 phase (Gap 1) of interphase
A.
Nuclear Division takes place
B.
DNA synthesis or replication takes place
C.
Reorganisation of all cell components takes place
D.
Cell is metabolically active, grows but does not replicate its DNA
NEET 2020 Q14 Errorless Critical Thinking MCQ
Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G0). This process occurs at the end of
A.
G2 phase
B.
M phase
C.
Gā‚ phase
D.
S phase
NEET 2020 Q15 Errorless Critical Thinking MCQ
Dissolution of the synaptonemal complex occurs duing
A.
Leptotene
B.
Pachytene
C.
Zygotene
D.
Diplotene
NEET 2019 Q16 Errorless Critical Thinking MCQ
The concept of "Omnis cellula-e cellula" regarding cell division was first proposed by
A.
Rudolf Virchow
B.
Theodore Schwann
C.
Schleiden
D.
Aristotle
NEET 2017 Q17 Errorless Cell division MCQ
Which of the following options gives the correct sequences of events during mitosis
A.
Condensation ā†’ nuclear membrane disassembly ā†’ crossing over ā†’ segregation ā†’ telophase
B.
Condensation ā†’ nuclear membrane disassembly ā†’ arrangement at equator ā†’ centromere division ā†’ segregation ā†’ telophase
C.
Condensation ā†’ crossing over ā†’ nuclear membrane disassembly ā†’ segregation ā†’ telophase
D.
Condensation ā†’ arrangement at equator ā†’ centromere division ā†’ segregation ā†’ telophase
NEET 2017 Q18 Errorless Cell division MCQ
Anaphase promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur
A.
Chromosomes will not condense
B.
Chromosomes will be fragmented
C.
Chromosomes will not segregate
D.
Recombination of chromosome arms will occur
NEET 2017 Q19 Errorless Critical Thinking MCQ
DNA replication in bacteria occurs
A.
During S phase
B.
Within nucleolus
C.
Prior to fission
D.
Just before transcription
WB JEE 2016 Q20 Errorless Cell division MCQ
Cells of certain species of animals have six pairs of chromosomes. How many molecules of DNA will remain in a nucleus of these animals during G, phase
A.
12
B.
48
C.
6
D.
24
WB JEE 2016 Q21 Errorless Cell division MCQ
Which of the following is used as the mitotic spindle poison
A.
Ca+āŗ
B.
Mg+āŗ
C.
Tubulin
D.
Colchicine
WB JEE 2016 Q22 Errorless Cell division MCQ
Which of the following is not true for meiosis
A.
Production of genetic variability
B.
Maintaining constancy of chromosome number during sexual reproduction
C.
Reduction of chromosome number to one half
D.
Production of diploid cell
NEET (Phase-II) 2016 Q23 Errorless Cell division MCQ
Match the stages of meiosis in Column-I to their characteristic features in Column-II and select the correct option using the codes given below Column-I Column-II
Column-IColumn-II
(A)Pachytene
(B)Metaphase I
(C)Diakinesis
(D)Zygotene
(P)Pairing of homologous chromosomes
(Q)Terminalization of chiasmata
(R)Crossing-over takes place
(S)Chromosomes align at equatorial plate
A.
A-S, B-R, C-Q, D-P
B.
A-R, B-S, C-Q, D-P
C.
A-P, B-S, C-Q, D-R
D.
A-Q, B-S, C-R, D-P
NEET (Phase-II) 2016 Q24 Errorless Cell division MCQ
When cell has stalled DNA replication fork, which checkpoint should be predominantly activated
A.
Both G2/M and M
B.
G1/S
C.
G2/M
D.
M
WB JEE 2016 Q25 Errorless Cell division MCQ
Progression of cell cycle is regulated by the concentration of which type of molecule
A.
Centrosomes
B.
Cyclin-dependent kinases
C.
Cyclins
D.
Microtubules