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Biology
Cell Cycle and Cell Division
87 questions from 33 papers, each with its answer.
- 87 questions
- 33 papers
- 2.47% of Biology
Mitosis – sequence of events
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Which of the following options gives the correct sequence of events during mitosis?
Crossing over does not occur in mitosis.
(i) Condensation of DNA so that chromosomes become visible occurs during early to mid-prophase. (ii) Nuclear membrane disassembly begins at late prophase or the transition to metaphase. (iii) Arrangement of chromosomes at the equator (congression) occurs during metaphase. (iv) Centromere division occurs during anaphase, forming daughter chromosomes. (v) Segregation also occurs during anaphase as daughter chromosomes separate and move to opposite poles. (vi) Telophase leads to the formation of two daughter nuclei.
Mitosis – anaphase regulation
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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?
APC triggers sister chromatid separation.
Anaphase Promoting Complex (APC) is necessary for separation of daughter chromosomes during anaphase. If APC is defective, the chromosomes will fail to segregate during anaphase.
Cell division in prokaryotes
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DNA replication in bacteria occurs
Bacteria replicate DNA just before binary fission.
DNA replication in bacteria occurs prior to fission. Prokaryotes do not show a well-marked S-phase.
That is every question in Cell Cycle and Cell Division for this filter.
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