BIO181: General Biology (Alu Sequences)

This guide is designed for students taking BIO181 (General Biology) from R. Cotter, A. Marti-Subirana, or M. McGraw.

Primary vs. Secondary Sources

primary source in the sciences is the first report of reproducible results and methods written by the scientist who conducted the research. Characteristics of primary sources in the sciences:

  • Share new discoveries, original results, novel research
  • Report is made by the scientist(s) who conducted the research.
  • Contains sufficient information for other scientists to evaluate and reproduce results.

Note: Primary science research articles will still contain a literature review section that summarizes others’ research. This is an important part of establishing the novelty and credibility of the new research.

secondary source in the sciences does not contain any new results found or produced by the author. Examples include a news report about a new discovery, an article that comprehensively reviews all research on a topic, or an entry in an encyclopedia about the human genome. 


Creative Commons License  All references to the science information life cycle are based on the fabulous tutorial created by the University of California Irvine Libraries Department of Education and Outreach, "Find Science Information Online Workshop." 

Track Down a Cited Source

Sources cited (references and in-text citations) in scientific articles are often primary literature.  To locate the full-text of a cited source:

  1.  Search   
    IMPORTANT:  Be sure to change your Google Scholar settings so that links to full-text articles available through PC Library databases appear in your search results.   Watch this short instructional video [1:39].
    OR
  2. Locate the article in a PC Library database by using the Journal Search.

Journal Articles

Primary literature can be scientific articles (original research studies) published in scholarly journals.

Google Scholar Settings for PC