10 Questions
Which organisms require cell division to increase the number and maintain continuity of life?
Unicellular organisms
What is the role of cell division in multicellular organisms?
Bringing about growth, development, repair, maintenance, and reproduction
Which type of cell division occurs in unicellular prokaryotic organisms like Bacteria and Yeast?
Amitosis
What does amitosis refer to?
Cell division in unicellular prokaryotic organisms
In which type of organism is cell division necessary for reproduction?
Unicellular organisms
What is the process by which a cell replicates its chromosomes and then segregates them, producing two identical nuclei in preparation for cell division?
Mitosis
Which phase of the cell cycle is the longest phase of mitosis?
Prophase
What happens to the nuclear membrane during prophase of mitosis?
It dissolves and disappears
Which structure attaches the sister chromatids together during prophase of mitosis?
Centromere
Before entering mitosis, a cell spends a period of its growth under which phase?
G1 Phase
Study Notes
Cell Division and Its Significance
- All living organisms require cell division to increase in number and maintain continuity of life.
Cell Division in Multicellular Organisms
- Cell division plays a crucial role in multicellular organisms, as it allows for growth, development, and tissue repair.
Cell Division in Unicellular Organisms
- Binary fission is the type of cell division that occurs in unicellular prokaryotic organisms like Bacteria and Yeast.
Amitosis
- Amitosis refers to a type of cell division that occurs without the formation of a spindle or the condensation of chromosomes.
Cell Division and Reproduction
- Cell division is necessary for reproduction in unicellular organisms, as it allows them to produce offspring.
Chromosome Replication and Segregation
- The process by which a cell replicates its chromosomes and then segregates them, producing two identical nuclei in preparation for cell division, is known as chromosome replication and segregation.
Phases of the Cell Cycle
- Interphase is the longest phase of the cell cycle, during which the cell grows, replicates its DNA, and prepares for cell division.
Mitosis
- During prophase of mitosis, the nuclear membrane breaks down.
- The centromere is the structure that attaches the sister chromatids together during prophase of mitosis.
Cell Growth and Division
- Before entering mitosis, a cell spends a period of its growth under the interphase stage.
This quiz covers the topic of cell division, which is crucial for the growth, development, repair, maintenance, and reproduction of multicellular organisms, as well as for increasing and maintaining continuity of life in unicellular organisms.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
