Mitosis Stages
What is the phase of the cell cycle where the cell spends most of its time and prepares for mitosis?
Interphase
What structure organizes and assembles the spindle fibers during mitosis?
Centrosome
How many stages are there in mitosis?
5 (Prophase, Metaphase, Anaphase, Telophase, Cytokinesis)
True or False: Mitosis only occurs in multicellular organisms.
False (Mitosis occurs in both unicellular and multicellular organisms for processes like asexual reproduction and growth in multicellular organisms.)
True or False: Mitosis occurs in both prokaryotic and eukaryotic cells.
False (Mitosis only occurs in eukaryotic cells.)
During which phase do the chromosomes line up at the cell's equator?
Metaphase
What is the name of the protein complex that helps sister chromatids stay together during mitosis?
Cohesin
True or False: Mitosis occurs only in somatic (body) cells.
True
True or False: Mitosis can happen without cytokinesis.
False (Cytokinesis is necessary to complete cell division and produce two daughter cells.)
True or False: In mitosis, the number of chromosomes in the daughter cells is halved.
False (The number of chromosomes stays the same as in the parent cell.)
Which phase marks the beginning of the actual division of the cytoplasm?
Cytokinesis
What structure forms between two daughter cells during cytokinesis in animal cells?
Cleavage furrow
During which phase does the mitotic spindle begin to form?
Prophase
Some people think that the cell only divides once in mitosis. What is the truth?
Mitosis includes one division of the nucleus, but it is followed by cytokinesis, which divides the cytoplasm into two new cells.
True or False: Cytokinesis is part of the mitotic phase of the cell cycle.
False (Cytokinesis is a separate process that occurs after mitosis.)
In which phase do sister chromatids separate and move toward opposite poles?
Anaphase
What are the tiny protein filaments that make up the spindle fibers?
Microtubules
What is the purpose of mitosis in multicellular organisms?
To produce two genetically identical daughter cells for growth, repair, and asexual reproduction.
True or False: In mitosis, a cell always divides into two identical cells with the same number of chromosomes as the parent.
True (Mitosis ensures that each daughter cell has the same number of chromosomes as the parent cell.)
True or False: The mitotic spindle helps move chromosomes during mitosis.
True
During which phase does the nuclear envelope reform and the chromosomes decondense into chromatin?
Telophase
Which organelle is involved in producing ATP that is essential for the energy needed during mitosis?
Mitochondria
Which phase of mitosis is the shortest in duration?
Anaphase
True or False: The phases of mitosis happen in a random order, and are not strictly regulated.
False (The phases of mitosis occur in a specific, orderly sequence: Prophase, Metaphase, Anaphase, Telophase, and then Cytokinesis.)
True or False: During telophase, the cell’s genetic material is still condensed into chromosomes.
False (During telophase, the chromosomes decondense into chromatin.)