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Name: ____________________________ Date: ___________________ Period: ____ Cell Cycle and Mitosis Practice: Fill-in-Blank Directions: Using the word bank below, choose the words that fit into each of the blanks. Each blank is worth one point for a total of 28 points. Word Bank A: DNA Structure and Cell Cycle A. daughter B. volume C. nucleus D. chromatids E. chromosomes F. surface area G. DNA H. binary fission I. cell cycle J. centromere K. cell division L. G2 M. interphase N. G1 O. chromatin P. S 1. To make large organisms (ex: plants and animals), cells divide because they cannot continue to grow forever. One reason they cannot grow forever is they will not have enough __________ to control a massive cell’s activities. 2. Another reason cells cannot grow forever is that the _______________ of their membrane does not increase as quickly as the ________________, which limits the necessary transport of materials into and out of the cell. 3. During prokaryotic cell division, DNA is copied and divided into two identical ____________ cells. This process is called ______________________. 4. In eukaryotic cells, cell division is a little more complicated. In these cells, DNA is found in the ____________. 5. Uncoiled DNA and proteins are called ____________________, which coils up during cell division to form ____________________. 6. Each chromosome has two identical sections of DNA called ______________ that are connected at a region called the _____________________. These identical sections of DNA must separate during cell division. 7. The events that make up the life of a cell are called the _________________. The two main parts of this cycle are ___________________ and ___________________. 8. During interphase, there are three stages. During the __________ phase, the cell grows. During the ___________ phase, the genetic material (DNA) of the cell is copied. During the ____________ phase, the cell prepares for division. Word Bank B: Cell Division A. prophase B. metaphase C. anaphase D. telophase E. mitotic spindle F. mitosis G. centromere H. centrioles I. cleavage furrow J. nuclear membrane K. cytokinesis L. cell plate 9. Cell division involves two parts, mitosis and cytokinesis. _______________ is division of the nucleus, and _______________ is division of the cytoplasm. 10. During _________________, the _____________________ breaks down and chromatin coils into chromosomes. 11. In this stage, the ________________________ also begins to form when proteins called microtubules grow from structures at either end of the cell called _______________________. 12. During ___________________, spindle fibers arrange chromosomes at the center of the cell along a line called the metaphase plate. Spindle fibers attach to chromosomes at the ___________________. 13. During ___________________, spindle fibers pull apart chromatids and carry new daughter chromosomes to opposite ends of the dividing cell. 14. During ____________________, two nuclear membranes reform, chromosomes uncoil, and the mitotic spindle breaks down. At this point, nuclear division is complete. 15. After mitosis, the cytoplasm divides in a process called cytokinesis. In animal cells, the cell membrane pinches in to form a __________________. In plant cells, a _________________ forms between the two new daughter cells.