23 Questions
During which phase do the centrioles complete their migration to the poles?
Metaphase
What occurs during anaphase?
Sister chromatids are pulled apart
What is the position of the chromosomes during metaphase?
In the middle of the cell
Which phase ensures that each daughter cell gets identical sets of chromosomes?
Anaphase
What happens to chromosomes during telophase?
They decondense
What is the long period of the cell cycle between one mitosis and the next called?
Interphase
During which phase of interphase does the cell duplicate its chromosomes?
S phase
Which of the following is NOT one of the phases of mitosis?
Cytokinesis
What happens during the G1 phase of interphase?
Cellular contents excluding the chromosomes are duplicated
Which phase is the first stage of mitosis?
Prophase
Which structure attaches spindle fibers to sister chromatids?
Kinetochore
During which process does the division of the cytoplasm occur?
Cytokinesis
Which phase of interphase involves the cell 'double checking' duplicated chromosomes for errors?
G2 phase
What is cytokinesis?
Division of the cytoplasm
During which stage do chromosomes align at the metaphase plate?
Metaphase
What significant event occurs during prometaphase?
Nuclear envelope breaks down
Which phase marks the beginning of cytokinesis?
Telophase
What happens during the metaphase to anaphase transition?
Sister chromatids separate
How does cytokinesis occur in animal cells?
By a cleavage furrow pinching the plasma membrane inward
In which phase does DNA replication occur?
Interphase
During which phase do the centrosomes move to opposite poles of the cell?
Prophase
Which phase involves the complete separation of sister chromatids?
Anaphase
What is the main event of the telophase stage?
Nuclear envelope reforms around each set of chromosomes
Study Notes
Cell Division and the Cell Cycle
- Cell division involves two phases: mitosis (division of the nucleus) and cytokinesis (division of the cytoplasm)
Phases of Mitosis
- Interphase: long period of the cell cycle between one mitosis and the next, includes G1, S, and G2 phases
- Prophase: chromosomes condense and become visible, centrioles form and move towards opposite ends of the cell, nuclear membrane dissolves, and mitotic spindle forms
- Prometaphase: nuclear envelope breaks down, microtubules attach to kinetochores on chromosomes
- Metaphase: chromosomes align at the metaphase plate, an imaginary plane that bisects the cell
- Metaphase to Anaphase Transition: sister chromatids separate and begin to move to opposite poles of the cell
- Anaphase: sister chromatids separate completely and are pulled to opposite poles of the cell
- Telophase: nuclear envelope reforms around each set of chromosomes, chromosomes decondense, and spindle fibers disappear
- Cytokinesis: cytoplasm divides, forming two daughter cells that are genetically identical to the parent cell
Cytokinesis
- Division of the cytoplasm, resulting in two daughter cells
- usually occurs with mitosis, but in some organisms this is not the case
Mitosis
- nuclear/chemical events resulting in two daughter nuclei with identical genetic material to each other and to the mother cell
- consists of prophase, metaphase, anaphase, and telophase
Cell Cycle
- The sequence of events that a cell goes through from one cell division to the next
- Includes interphase and the four phases of mitosis
This quiz covers the process of cell division in eukaryotic cells, including cytokinesis and mitosis. It explains the stages of cell division and how they occur.
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