Unit 4: Cell Cycle Flashcards
What is the purpose of the cell cycle?
The cell cycle is the process by which cells grow, divide, and replicate.
What are the main phases of the cell cycle?
The main phases of the cell cycle are interphase, mitosis, and cytokinesis.
During which phase of the cell cycle does DNA replication occur?
DNA replication occurs during the S phase of interphase.
What is mitosis?
Mitosis is the process of cell division in which the nucleus divides into two daughter nuclei with identical genetic material.
What are the stages of mitosis in order?
The stages of mitosis in order are prophase, metaphase, anaphase, and telophase.
What is meiosis?
Meiosis is a type of cell division that results in four daughter cells with half the number of chromosomes as the parent cell.
How many divisions occur in meiosis?
Meiosis involves two divisions: meiosis I and meiosis II.
What is the significance of crossing over in meiosis?
Crossing over in meiosis results in genetic variation by exchanging genetic material between homologous chromosomes.
What is the difference between mitosis and meiosis?
Mitosis produces two genetically identical daughter cells, while meiosis produces four genetically different daughter cells.
What is the purpose of cytokinesis?
Cytokinesis is the final stage of the cell cycle that involves the division of the cytoplasm to form two separate daughter cells.
True or False: Mitosis is responsible for growth and repair in multicellular organisms.
True
Fill in the blank: Meiosis reduces the chromosome number by ______.
Half
Which phase of mitosis involves the alignment of chromosomes in the center of the cell?
Metaphase
What is the purpose of the G1 phase in interphase?
The G1 phase is a period of cell growth and preparation for DNA replication.
What is the role of the spindle fibers in mitosis?
Spindle fibers help separate the chromosomes during cell division by attaching to the centromeres.
