Download Extra Credit Ch. 6 Cell cycle and Mitosis student

Name_________________________________________Pd._____Date_________
Extra Credit: Cell Cycle and Mitosis Ch. 6
Completion
Complete each sentence or statement.
1. Following replication of its DNA, each chromosome contains two ____________________, which are
attached to each other by a centromere.
2. The DNA in eukaryotic cells is packaged into structures that are called ____________________.
3. A(n) ____________________ is a segment of a DNA molecule that carries the instructions for producing a
specific trait.
4. Collectively, the time spent in G1 + S + G2 is called ____________________.
5. A cell’s DNA is copied during the ____________________ phase.
6. Cells that are not dividing remain in the ____________________ phase.
7. Normal cell growth and cell division are stimulated by ____________________.
8. DNA replication is checked at the ____________________ checkpoint.
9. Loss of control and regulation of the ____________________ ____________________ can result in the
development of cancer.
10. Cancer is a disease of ____________________ ____________________.
11. “Cables” made of microtubules that extend from the poles of a cell to the centromeres during cell division are
called ____________________ ____________________.
12. Spindle fibers are made of hollow tubes of protein called ____________________.
13. In mitosis, anaphase follows ____________________.
14. Chromosomes coil up into short, fat rods during ____________________.
15. Chromosomes coil up and become visible during ____________________.
16. Chromatids migrate toward poles as spindle fibers shorten during ____________________.
17. In many eukaryotic cells, ____________________ takes place after the nucleus divides.
18. After a new nuclear membrane forms during telophase of mitosis or meiosis, the ____________________
divides, resulting in two cells.
19. In plant cells, a(n) ____________________ ____________________ forms in the center of the cell during
cytokinesis.