Solve these 10 very important, previous year NEET questions from chapter “cell cycle and cell division“
1. 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? [NEET-2017]
(1) Chromosomes will not condense
(2) Chromosomes will be fragmented
(3) Chromosomes will not segregate
(4) Recombination of chromosome arms will occur
2. During cell growth, DNA synthesis takes place in [NEET (Phase-2) 2016]
(1) S phase
(2) G1 phase
(3) G2 phase
(4) M phase
3. When cell has stalled DNA replication fork, which checkpoint should be predominantly activated? [NEET (Phase-2) 2016]
(1) G1/S
(2)G2/M
(3) M
(4) Both G2/M
4. In meiosis crossing over is initiated at [NEET-2016]
(1) Diplotene
(2) Pachytene
(3) Leptotene
(4) Zygotene
5. Which of the following options gives the correct sequence of events during mitosis? [NEET-2017]
6. A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus cell is containing more number of chromosomes as compared to other dividing cells. This would result in [NEET-2016]
(1) Polyteny
(2) Aneuploidy
(3) Polyploidy
(4) Somaclonal variation
7. Which of the following is not a characteristic feature during mitosis in somatic cells?
[NEET-2016]
(1) Synapsis
(2) Spindle fibres
(3) Disappearance of nucleolus
(4) Chromosome movement
8. Meiosis takes place in [NEET-2013]
(1) Conidia
(2) Gemmule
(3) Megaspore
(4) Meiocyte
9. The complex formed by a pair of synapsed homologous chromosomes is called [NEET-2013]
(1) Kinetochore
(2) Bivalent
(3) Axoneme
(4) Equatorial plate
10 A stage in cell division is shown in the figure given below. Select the answer which gives correct identification of the stage with its characteristics [NEET 2013]
Important topics for NEET 2024 exam from Chapter Cell cycle and Cell division :
Anaphase promoting complex
Checkpoints
DNA synthesis
Sequence of events during mitosis
Sequence of events during meiosis
Synapsis
Telophase