The content of the junior high school biology experiment student s experiment report

It's hard to find. There are only **.

The biological experiment report is written as follows:

Six steps to the experiment.

1. Ask questions.

2. Make assumptions.

3. Design experiments.

4. Complete the experiment.

5. Draw conclusions.

6. Expression and communication.

Experiment** is to read more books, carefully read the experimental steps in the book, and there are a few questions that can be practiced, such as there are not many physics experiments, and the topic types to be tested will not be very diverse, the same as biology (chemistry is more diverse).

When talking about the conclusion of the experiment, write according to the experimental question of the question. For example, does temperature have an effect on the catalytic rate of an enzyme? The conclusion is that (temperature has an effect on the catalytic rate of the enzyme) the catalytic rate of the enzyme is the largest at about 36 (a range), and the lower or higher the temperature, the catalytic rate gradually decreases.

To follow the question template of the question, don't organize the language by yourself, some of the questions are according to the title, and it is very important to have higher accuracy, there must be words that can express the control of conditional variables, such as.

Under the same conditions, the same amount, and some should be added moderately, such as the water required for the study of seed growth should be added moderately, and the temperature should be appropriate. So you need to use the right amount of words, definitely these words.

Be precise when answering conclusions, and describe each different situation clearly.

Don't make a mistake in calculating, one empty is two points, generally two empty, and even kneeling if you miscalculate one.

Sample Biology Experiment Report Format

Experiment Name: Observation of chloroplast and cytoplasmic flow with high-power microscopy.

1. Purpose of the experiment:

1.Preliminary mastery of the use of high-power microscope.

2.To observe the morphology and distribution of chloroplasts in the cytoplasmic matrix of higher plants.

Second, the experimental principle:

The chloroplasts of higher plants are ellipsoidal, and under different light conditions, the chloroplasts can move and change the direction of the ellipsoid, so that they can receive more light and not be burned by strong light.

In bright light, chloroplasts face the light source with the sides of their ellipsoids; In low light, chloroplasts face the light source with the front of their ellipsoid. Therefore, the shape of the chloroplast ellipsoids in the leaflets of cucurbita moss collected under different light conditions is not exactly the same.

The cytoplasm in living cells is in a constant state of flux, and observing the flow of cytoplasm can be marked by the movement of chloroplasts in the cytoplasmic matrix.

3. Materials and utensils:

Moss leaves, fresh black algae, microscope, glass slides, coverslips, droppers, tweezers, razor blades, Petri dishes, pencils.

Fourth, the experimental process:

1.Temporary loading of moss leaves.

2.Observe chloroplasts with a microscope.

3.Temporary loading of black algae leaves.

4.Observe cytoplasmic flow with a microscope.

V. Discussion:1Are chloroplasts stationary in cytoplasmic matrix and why?

2.What is the relationship between the morphology and distribution of chloroplasts and the function of chloroplasts?

3.The cytoplasm of plant cells is in a constant state of flow, what is the significance of this for living cells to complete life activities?

4.Use a pencil to draw a leaf cell to mark the approximate flow direction of the chloroplast.

Summary. Hello! We're happy to answer for you!

The list of junior high school biology experiments is as follows:

1|The Effect of Light on the Rat Woman.

2|The effect of plants on air humidity.

3|Practice using a microscope.

4|Observe plant cells.

5 |Observation of human oral epithelial cells.

6|Observe the basic tissues of the human body.

7|Observe paramecium.

8|Observe the structure of the seed.

9|Environmental conditions for seed germination.

10|The germination rate of the seeds was determined.

11|What part of the root grows the fastest.

12|Observe the structure of the blade.

13|Green leaves make organic matter in the presence of light.

14 II: Whether carbon oxide is an essential raw material for photosynthesis.

Hope mine is helpful to you!

Hello! We're glad to answer your questions! The list of junior high school biology experiments is as follows:

1|The Effect of Light on the Rat Woman. 2|The effect of plants on air humidity. 3|Practice using a microscope. 4|Observe plant cells. 5 |Observation of human oral epithelial cells. 6|Observe the basic tissues of the human body7|Observe paramecium insects8|Observe the structure of the seed. 9|Environmental conditions for seed germination10|Determine the germination rate of seeds11|What part of the root grows the fastest12|Observe the structure of the blade. 13|Green leaves make organic matter under the light 14 II: Is carbon oxide an essential raw material for photosynthesis, I hope mine will help you!

1. Experimental report on the living environment of the student ** rat woman.

Experiment content: What is the living environment of the rat woman related to?

The purpose of the experiment: to let students know what is related to the living environment of the rat woman through the experimentExperimental equipment: several rat women, two petri dishes, and some damp soil Experimental steps:

Divide the rat woman into two equal parts and place them in Petri dish A and Petri dish B respectively, where Petri dish A is put in an appropriate amount of moist soil and placed in a cool place, and Petri dish B is not put in moist soil and placed in a sunny place.

Experimental Record: The rat woman placed in the shade grows normally, and the rat woman placed in the sun gradually diesExperimental results: The living environment of the rat woman is related to humidity and sunlight exposure 2.

Experiment content: (Just change the name above).

Experiment time: Purpose of the experiment: Let students understand how earthworms can run fast through experiments Experimental equipment: 1 earthworm, glass plate, wooden board, 16 open paper Experimental steps: Let the earthworm climb on the glass plate, wooden board, and 16 open paper respectively, and observe which one runs fast.

Experiment Log: Earthworms crawl slowly on glass plates, climb fast on paperResults: Earthworms crawl fast on wrinkled objects.

Learn on your own, not just for answers. Be more understanding yourself.