13 Questions
What is the term for the number of chromosomes in a gamete?
Gametic number
Which type of cell has two haploid sets of chromosomes?
Somatic cell
What determines the shape of chromosomes?
Centromere position
What is the main role of karyokinesis in the M-phase of the cell cycle?
Division of the nuclei
During which stage does each chromatid of a chromosome get its own centromere?
Anaphase
What happens to the nuclear membrane and nucleolus during the prophase of mitosis?
They start degenerating
What is the significance of mitosis cell division?
It is involved in the production of genetically identical cells
Which process leads to the division of cytoplasm after karyokinesis?
Cytokinesis
How does cytokinesis take place in animal cells?
By furrow formation method
During which phase of the cell cycle does the cell prepare for division?
Interphase
In which type of cell division is the number of chromosomes in the parent and daughter cells the same?
Mitosis
What is another name for somatic cell division?
Mitosis
Which stage of the cell cycle is characterized by growth in size and synthesis of RNA and proteins?
Interphase
Study Notes
Chromosome Structure and Cell Division
- The term for the number of chromosomes in a gamete is haploid.
- A diploid cell has two haploid sets of chromosomes.
- The shape of chromosomes is determined by histone proteins that wrap around the DNA molecule.
- Karyokinesis plays a crucial role in the M-phase of the cell cycle, where it separates the chromosomes into two daughter nuclei.
Mitosis and Cytokinesis
- During metaphase, each chromatid of a chromosome gets its own centromere.
- In the prophase of mitosis, the nuclear membrane breaks down, and the nucleolus disappears.
- Mitosis is a type of cell division that ensures the same number of chromosomes in the parent and daughter cells, and it's essential for growth, repair, and replacement of cells.
- Cytokinesis is the process that leads to the division of cytoplasm after karyokinesis.
- In animal cells, cytokinesis takes place through the cleavage of the cytoplasm, resulting in the formation of two daughter cells.
Cell Cycle and Cell Division
- The interphase is the stage of the cell cycle where the cell prepares for division, characterized by growth in size and synthesis of RNA and proteins.
- Mitosis is also known as somatic cell division, where the number of chromosomes in the parent and daughter cells remains the same.
Test your knowledge about chromosomes, DNA-protein complexes, hereditary structures, chromosome numbers, and chromosome sizes in plants and animals.
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