An introduction to a biology research paper serves an important purpose – it introduces the topic to your reader and establishes the context and significance of your research. The introduction is one of the first impressions a reader will get of your paper, so it is important to craft it carefully. A strong introduction accomplishes several key tasks that are important to understand.
The first task of an introduction is to get the reader interested in your topic. You will want to frame the research question or problem in a way that provides intrigue or importance. When introducing a topic, consider opening with a relevant fact, statistic, or anecdote that draws the reader in. For example, you could introduce a paper on antibiotic resistance by stating something like “It is estimated that drug-resistant infections will kill 10 million people globally per year by 2050 if no action is taken, according to a United Kingdom review on antimicrobial resistance.” This opening statement establishes the relevance and importance of the research problem.
Another key task for an introduction is to clearly define the scope or focus of your paper. You will want to clearly state the specific question or problem your research will address. For the antibiotic resistance paper example, the introduction would state something like “This paper will focus specifically on the rise of drug-resistant E. coli infections and explore potential strategies to combat further development of antibiotic resistance in this pathogen.” Defining the scope helps set clear expectations for the reader about what will and will not be covered.
The introduction should also provide relevant background information and context needed to understand your research question. You may need to briefly explain key concepts, summarize previous studies, or define important terms. For the E. coli example, some background could include a brief overview of what E. coli is, how antibiotic resistance develops, and past studies that have shown increasing resistant E. coli strains. Provide only the most pertinent and concise background details – the goal is not to discuss everything already known, only what is directly relevant to understand your specific focus.
Another task is to establish the significance or importance of your research topic. You will want to convey to the reader why they should care about the question being explored. For the E. coli example, significance could be established by discussing rising healthcare costs and patient mortality associated with multi-drug resistant infections. Statements about the public health implications help demonstrate why the research is worthwhile.
Finally, the introduction provides an overview or preview of how you will approach the research question. A brief paragraph should outline your experimental methods, scope of data collection, and proposed main conclusions or finding. For a lab experiment-based project, you may state something like:
“To investigate strategies to slow development of antibiotic resistance in E. coli, five antibiotic resistant clinical isolates of the bacteria were selected. Each isolate was exposed to various concentrations of potential resistance-modifying agents in vitro. Minimum inhibitory concentrations were determined to compare effectiveness of resistance modulation. Results will be discussed to propose mechanisms of action and most promising compounds for further evaluation.”
This gives the reader an initial sense of how you plan to add understanding to the question without giving away the actual results. It establishes proper expectations and narrative flow for the subsequent Methods, Results, and Discussion sections.
An effective introduction achieves several key purposes: it captures the reader’s attention and establishes the significance of the research question; it clearly defines the specific focus or scope of exploration; it provides necessary background context; and it offers an initial preview of how the question will be addressed through experimental approach and expected findings. With consideration of these purposes, biological sciences research introductions can set the stage for important work and persuade readers of each paper’s relevance and value.