Download Mitosis Fill-in-the-Blank Worksheet

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.