Name _________________________
Cell Division and Mitosis
Pg. 96 – 102 (Glencoe)
1. Every organism started out as ____ cell.
2. Why is cell division important? (read carefully within the first paragraph)
1) _________________________________
2) _________________________________
3) _________________________________
3. What is the cell cycle?
4. Most of the life of any eukaryotic cell is spent in a period of ____________ and
development called _____________.
5. Why is it important for a cell to copy its hereditary information before dividing?
6. Mitosis is the process in which ____________________________________
_____________________________________________________________.
7. A ______________________ is a structure in the nucleus that contains hereditary
material.
8. An unduplicated chromosome has _____ strand of DNA, while a duplicated
chromosome as ______ identical DNA strands.
9. Draw a picture of a chromosome and label the chromatids and centromere.
10.What are the 5 phases of mitosis?
1)
2)
3)
4)
5)
11.When does mitosis actually begin? ________________________________
12.What are the 3 results of cell division?
1) ________________________________________________________
2) ________________________________________________________
3) ________________________________________________________
13. In ___________________________ a new organism is reproduced from one organism.
Sexual Reproduction and Meiosis
Pg. 104-109
1. the two types of cells that are needed for sexual reproduction are:
a.
b.
2. When sperm and egg join, this is called _____________________________.
3. Your body forms two types of cells. These types of cells are called:
a.
b.
4. Human body cells have _____________ chromosomes.
5. When cells have pairs of similar chromosomes they are said to be
____________________.
6. Sex cells do not have pairs of chromosomes. They are called
_____________________.
7. During Mitosis, Body cells reproduce to make more body cells. In ______________
sex cells reproduce to make more sex cells (sperm and egg cells).
8. During meiosis, how many divisions of the nucleus occur? _________________
9. What are the four phases of meiosis I?
a.
b.
c.
d.
10.What are the four phases of meiosis II?
a.
b.
c.
d.
11.During meiosis, how many cells do you start with? ________ How many cells are
produced at the end of meiosis? _____________
12.What are some mistakes that can happen in meiosis? What can happen?