The student provides a focused and detailed description of the main topic at the beginning of the document, clearly stating the investigation of sucrose concentration on carbon dioxide production during yeast fermentation. The background information about yeast is relevant and focused, including historical significance, role in food production, and specific yeast brand used in the experiment. The biology is explained in a clear and understandable manner, allowing the reader to fully comprehend the concepts without the need for rereading. The methodology of the investigation is highly appropriate and focused on answering the research question, with appropriate steps to assure the relevancy and validity of the obtained results. However, the student did not state and explain a null and an alternative hypothesis, which is required for biology IAs. The student did not show full awareness of safety hazards, ethical concerns, and environmental issues, but they clearly stated that no such concerns arose and justified their claim briefly.
