Cell Growth & Division Review (Exam Review #1-33) Flashcards
What are 2 reasons that cells divide and limit cell growth?
- The larger the cell, the more demand placed on the DNA.
2. Larger cells have more trouble moving nutrients and wastes across the cell wall.
What is the process by which a cell divides into two new daughter cells called?
Cell Division (Not Mitosis)
What is the first stage of cell division?
Mitosis
What is the division of the nucleus called?
Mitosis
What is the second stage of cell division?
Cytokinesis
What is the division of the cytoplasm called?
Cytokinesis
Name the 4 phases of mitosis in order.
Prophase, Metaphase, Anaphase, Telophase
How many daughter cells are produced in the cell cycle?
2
Name the stage of mitosis in which the chromosomes become visible for the first time.
Prophase
Name the stage of mitosis in which chromosomes are seen lined up along the equator of the cell.
Metaphase
What are the microtubules that form between the centrioles during cell division?
Spindle fibers
What is the portion of the cell cycle between cell divisions called?
Interphase
In what part of the cell are the chromosomes located?
Nucleus
What organelle is only found in animal cells and plays an important role in cell division?
Centriole
What is the structure that joins chromatids together?
Centromere
In which stage of mitosis does the nucleus begin to disappear?
Prophase
In which stage of cell division are the chromosomes too thin to be seen under the microscope?
Interphase
In which stage of cell division does DNA replication occur?
Interphase (S phase)
In which phase of mitosis are the daughter cells formed?
Telophase
In which phase of mitosis may the chromosomes be seen moving to the poles?
Anaphase
Where is the DNA located during interphase?
Nucleus
What is cancer?
Abnormal cell growth/division
Is a malignant tumor ok or bad?
Bad
Is a benign tumor ok or bad?
Ok
In which stage of mitosis does the cell plate form?
Telophase
In what type of cells do cell plates form?
Plants and certain other cells with cell walls
In which phase of cell division does a cell spend most of its life?
Interphase
What is chromatin?
Very thin genetic material
Where is chromatin found?
Nucleus
Describe the cell produced as a result of mitosis.
Identical to the original
What structure regulates the size of the cell?
Cell membrane
What happens during replication?
Chromosomes are copied.
In which stage of mitosis do the chromatid pairs separate?
Anaphase
What structures compose the centrosome?
Centrioles
Why is mitosis important to an organism?
It needs new cells constantly to grow and replace old ones.
What organelle is found at the poles of the cell?
Centriole
