Biology First Stage: Cell Division

Which organisms require cell division to increase the number and maintain continuity of life?

What is the role of cell division in multicellular organisms?

Which type of cell division occurs in unicellular prokaryotic organisms like Bacteria and Yeast?

What does amitosis refer to?

In which type of organism is cell division necessary for reproduction?

What is the process by which a cell replicates its chromosomes and then segregates them, producing two identical nuclei in preparation for cell division?

Which phase of the cell cycle is the longest phase of mitosis?

What happens to the nuclear membrane during prophase of mitosis?

Which structure attaches the sister chromatids together during prophase of mitosis?

Before entering mitosis, a cell spends a period of its growth under which phase?

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.