Cell Cycle and DNA Replication: How Does DNA Replicate in Preparation for Cell Division?

  • Charles C. Tseng
  • Xiaoli Yang

What Is the Cell Cycle?

  • Cells are structural and functional units of organisms.

  • All cells contain DNA, which encodes all the genetic information of an organism.

  • The DNA in each cell can be transmitted to future generations, that is, the genetic material is heritable.

  • There are different ways to describe and classify organisms. For example:

  • Unicellular organisms versus multicellular organisms: Unicellular organisms are composed of just one cell, whereas multicellular organisms are composed of many cells.

  • Prokaryotes versus eukaryotes: Prokaryotes (such as bacteria) lack nuclear membranes and are unicellular. Eukaryotes contain nuclear membranes and are often multicellular organisms, although most protists and certain fungi are unicellular.

  • Some unicellular organisms live together, forming colonies, but each cell in the colony is independent, carrying out its own life processes.

  • Multicellular organisms contain specialized (differentiated) cells that perform specific functions.

  • Cells are...


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Copyright information

© Springer Science+Business Media, LLC 2013

Authors and Affiliations

  • Charles C. Tseng
    • 1
  • Xiaoli Yang
    • 2
  1. 1.Department of Biological SciencesPurdue University CalumetHammondUSA
  2. 2.Department of Electrical & Computer EngineeringPurdue University CalumetHammondUSA

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