Biological experiment report format sample

In what format should a biological experiment report be written? What are the requirements for writing? Below I will share with you several report format samples for your reference. Reference!

Biological Experiment Report Format 1

After an experiment on a certain educational phenomenon, it is necessary to conduct a comprehensive summary of the entire experimental process and propose an objective, generalized report that reflects the entire process. The written materials of the educational experiment and its results are called educational experiment reports. The educational experiment report can be divided into three parts: ①Foreword. ②Experimental process and results. ③Discussion and conclusion. The basic structure of the experimental report:

(1) Title. The objects, fields, methods and problems of education should be reflected in concise, summarized and clear sentences, so that readers can understand at a glance and judge whether there is any reading value.

(2) Unit and author. The researcher's work unit should be stated, or the experimenter or leader, team leader, and writer of a certain subject should be stated. Other personnel can be written at the end of the report. To show responsibility for the experimental report and facilitate readers to contact them.

(3) Topic part. It is the starting point of experimental research work and the core of experimental reports. The description of the topic should be specific and clear, clearly indicating the author's research direction and purpose, and explaining the source, background, pertinence and practical significance of solving the topic.

(4) Experimental methods. This is one of the main contents of the experimental report. The purpose is to make people understand the conditions and circumstances under which the research results were obtained, by what methods, and based on what facts, so as to determine the scientific nature of the experimental research and the authenticity and reliability of the results. properties, and can be repeatedly verified accordingly. Regarding the experimental methods, you should mainly explain: ① How to select the subjects, the conditions, number, sampling methods, experimental time and the applicable range of the research results. ②The tissue type (method) of the experiment and the basis for adopting this tissue type. That is: single group experiment, equal group experiment or rotating group experiment; what are the basis for adopting this type of experiment, such as test scores and scoring standards; basic measurement and measurement content, etc. ③The specific steps of the experiment; the experimental treatment of the experimental class. ④ Verification of the causal variable relationship (it should be noted that the cause variable must appear before the result variable, or both appear at the same time, but cannot occur after the result variable, otherwise the effect will come first and the cause will follow, and the experiment will not be valid). Here, two variables are measured. The measurement method should also be clearly explained: whether it is oral measurement, written measurement or operational measurement; whether it is individual measurement or collective measurement; whether there is a time for after-effect measurement, etc. Therefore, before the experiment, the cause variables related to the measurement content of the effect variables should be measured to compare with the effect variables. Only through such comparison can the relationship between changes be discovered. ⑤Control of irrelevant factors. Only by strictly controlling the role of irrelevant factors can statistical tests be used to eliminate the role of chance factors.

(5) Experimental results. The most important thing in the experimental results is to present data and typical examples. Data must be strictly verified and attention must be paid to the correct format of charts. Use statistical tests to describe the relationship between experimental factors and experimental results; typical examples can help people better understand the experimental results and make the experiment more convincing.

(6) Analysis and discussion. That is, using educational and teaching theories to discuss and analyze issues related to experimental results. Its main contents are: ① answer the questions raised at the beginning of the article based on the experimental results; ② conduct theoretical analysis and demonstration of the experimental results; ③ compare the experimental results with similar research results to find out the advantages and disadvantages; ④ propose possible solutions. The problems for in-depth research and the problems existing in this experiment can make future research directions clearer and avoid detours.

(7) Conclusion. It is a summary of the entire experiment, which comes directly from the results of the experiment and answers the questions raised by the experiment. The language for drawing conclusions must be accurate and concise; the reasoning must be strictly logical. The applicable scope of the conclusion should be consistent with the sampling scope.

(8) Appendix and references. Appendix refers to some important materials that are too long and too content to be written in a research report but must be explained to readers. Such as test questions, scoring standards, original data, research records, statistical tests, etc.; references refer to referencing and citing other people's materials and discussions in the experimental report. The source, author, document, title, book or journal title and publication time should be indicated. If you quote uncompiled foreign language materials, it is best to annotate them with the original text for verification. Biological experiment report sample 2

Identification of reducing sugars, fats, and proteins in experimental biological tissues

1. Experimental purpose

Preliminarily master the identification of reducing sugars in biological tissues , fat, protein basic methods.

2. Experimental Principle

1. Identification Principle of Reducing Sugars There are many types of reducing sugars ubiquitous in biological tissues, and the common ones are glucose, fructose, and maltose. They all contain reducing groups (free aldehyde groups or free ketone groups) in their molecules, so they are called reducing sugars. There are no free hemiacetal hydroxyl groups in the sucrose molecule, so it is called a non-reducing sugar and has no reducing properties. In this experiment, Fehling's reagent can only be used to test the presence of reducing sugars in biological tissues, but cannot identify non-reducing sugars.

Fehling’s reagent is prepared from a sodium hydroxide solution with a mass concentration of 0.1 g/mL and a copper sulfate solution with a mass concentration of 0.05 g/mL. When the two are mixed, a light blue solution is immediately generated. Cu(OH)2 precipitates. Under heating conditions, Cu(OH)2 and the added glucose can form brick-red Cu2O precipitates, and the glucose itself is oxidized into gluconic acid. The reaction formula is as follows:

CH2OH?(CHOH)4?CHO+2Cu(OH)2?CH2OH?(CHOH)4?COOH+Cu2O?+2H2O

Use Fehling When the reagent identifies reducing sugar, the color change process of the solution is: light blue brown brick red (precipitation).

2. Principle of protein identification When identifying whether biological tissues contain proteins, the biuret method is commonly used, using biuret reagent. The components of the biuret reagent are sodium hydroxide solution (A) with a mass concentration of 0.1 g/mL and copper sulfate solution with a mass concentration of 0.01 g/mL (B). In alkaline solution (NaOH), biuret (H2NOC?NH?CONH2) can react with Cu2+ to form a purple or purple-red complex. This reaction is called biuret reaction. Since protein molecules contain many peptide bonds similar to biuret structures, proteins can react with biuret reagents in color.

3. Principle of fat identification: Fat can be dyed orange by Sudan III and red by Sudan IV

3. Experimental process (see book P18)

V. Note

1. Regarding the experiment of identifying reducing sugars, when heating the solution in the test tube, a test tube clamp should be used Hold the upper part of the test tube and heat it in a large beaker of boiling water. Be careful that the bottom of the test tube does not touch the bottom of the beaker, and the mouth of the test tube does not face the experimenter to prevent the solution in the test tube from rushing out of the test tube when it boils, causing burns. If the solution in the test tube is too boiling, lift the test tube clamp to remove the bottom of the test tube from the boiling water in the large beaker.

2. Mix liquid A and liquid B of Fehling’s reagent evenly before use. Do not add liquid A and liquid B separately to the tissue sample fluid.

3. In the identification of proteins, add biuret A first, then add biuret B

6. Discussion

Identification of reducing sugars, What is the basis for fat and protein? ;