The basic structure of a scientific paper usually contains the following:
Provided here are descriptions of each part of a scientific paper: Structure of a Scientific Paper
Always refer to the assignment instructions related to your paper. Many peer-reviewed journal articles in biology and the sciences mostly follow this same structure or format.
Comprehending scientific articles can be challenging. However, you can save time by reading over the titles and abstracts first related to your topic or study of interest. If these are unrelated to your research topic, don't waste any more time, and move on to finding other articles. Next, after you have read through the titles/abstracts of your articles, it's always a great idea to take notes and write down the overall main purpose of each particular study.