Hole's Human Anatomy & Physiology (Shier), 12th Edition

Chapter 3: Cells

How the Cell Cycle Works

How is the cell cycle related to the primary functions of life? Living things have the following properties: they reproduce, they maintain themselves (homeostasis), and they grow. Individual cells exhibit all of these properties as they go through the cell cycle. During interphase, cells are primarily involved with growth and maintenance during the G1 and G2 stages. Reproduction occurs in steps at different times in the cell cycle. The copying of DNA occurs during the S phase. The segregation of DNA into two identical genomes begins in prophase and is completed by the end of anaphase. Finally, cytokinesis, the actual production of two different cells occurs during telophase. These three stages are necessary for reproduction: the genetic material must be copied, the genetic material must be spatially separated, and only then can cell division occur.

View the animation below, then complete the quiz to test your knowledge of the concept.



1.

Which of the following represents the correct order of the phases of the cell cycle?
A)G1 -> G2 -> S -> M
B)G1 -> G2 -> M -> S
C)G1 -> S -> G2 -> M
D)G1 -> S -> M -> G2
E)G1 -> M -> G2 -> S
2.

The division of the cytoplasm is called
A)synapsis.
B)mitosis.
C)meiosis.
D)cytokinesis.
E)cytogenetics.
3.

Which of the following represents the correct order of the phases of mitosis?
A)prophase -> anaphase -> metaphase -> telophase
B)prophase -> metaphase -> anaphase -> telophase
C)prophase -> metaphase -> telophase -> anaphase
D)metaphase -> prophase -> telophase -> anaphase
E)metaphase -> prophase -> anaphase -> telophase
4.

DNA replication occurs in mitosis.
A)True
B)False
5.

Mitosis and cytoplasmic division result in the formation of two genetically identical cells.
A)True
B)False
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Notice before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.