What is good recommended to do biology open homework, be fast, and hand it in after four days

Example 1: Title: It is a rare and famous fruit with a long history and is unique in Jiaxing City, Zhejiang Province, and has been planted for at least 2,500 years, so it has great protection and development value.

It is a deciduous sub-tree of the Rosaceae family, generally three or four meters high, the shape of the tree is slightly similar to an apricot tree, the branches are open, the trunk is purple-brown, the leaves are long and ovate, thick and dull, and its branches and leaves are different from the general plums.

The fruit of the plum is sweet and exquisite, and has a slight wine aroma, and is known as a superb, fairy fruit. However, it is difficult to cultivate, and in modern times, seedlings are raised by grafting, and peach trees or wild plums are mostly used as rootstocks. Since the end of the Qing Dynasty, due to the war and other reasons, the variety has been degraded, the planting area has decreased sharply, and the yield is low, especially in recent years, it is far from being able to meet the market demand, and the first is high, so it is urgent to expand the planting area.

Since it is difficult to cultivate with ordinary methods and has a long cycle, please design a feasible plan to use tissue culture technology to propagate the seedlings of "Prunus prunus".

Conditions for completing this assignment:

The group completes the homework.

There is feedback from teachers and feedback from classmates.

There is a time limit and there is an opportunity to modify.

Some of the assignments were conducted by students and their classmates, but the text was completed by individuals. This assignment is carried out after the completion of the module "Applications of Biotechnology in Other Aspects".

Example 2: After learning about the respiration of plants, you can assign students an assignment like this: Dad likes to raise flowers, and when winter comes, he moves flowers into the bedroom to cultivate them because he is worried that the flowers will freeze to death.

Please try to explain whether this is good or not based on what you have learned, and tell Dad.

Example 3: After learning the chapter "Human Nutrition", students can make a list of foods that their families have eaten in the past few days, analyze whether their own and their families' diets are reasonable based on the structural proportions of the five types of foods in the "Balanced Diet Pagoda" of Chinese residents, and put forward opinions and suggestions on reasonable diets for their families. In the process of completing this assignment, students will be able to relate what they have learned in class to real life.

This kind of assignment not only allows students to further consolidate what they have learned, but also allows them to learn to care for those around them.

Example 4: Before learning the knowledge of "safe medication", the teacher can assign students to collect several drug instructions after class, pay attention to what signs are on the instructions, what are the contents, what should be paid attention to before taking drugs, etc. Let the students walk into the classroom with these questions and the collected instructions for the use of the medicines with great interest and devote themselves to learning.

Biology is a very scientific subject.

But it can't be said to be too extreme.

For example, one of the most common ones: cloning technology, what should we think?

But again, we have to take a critical look at this technology. Because in some places, there are great conflicts in social morality and ethics, etc.

It seems that time has passed, but it is still recommended that you go to the family to make a treasure to turn waste into treasure to take a look, which is a selection of small productions.

What are you going to do, I didn't understand your question too much.

It's very simple to make a leaf vein bookmark, and it works well.

Planarians collected from the wild can be moved to goldfish tanks or other glass containers for rearing. The tank must be clean, otherwise it will affect the normal life of planarians and even cause death. In addition, planarians have the habit of avoiding light, so the feeding tank should be placed in a cool place, and some small stones brought back from the collection should be placed in the tank.

The cylinder mouth is covered with a layer of gauze to prevent mosquitoes and other eggs from spawning. It is best to use well water for feeding water, if tap water is used, it must be put for 2 or 3 days before it can be used.

Planarians like to eat easily digestible animal foods, which can be fed with fresh animal liver or boiled egg yolks, or a small amount of fish insects. Feeding is usually done once a week, which can be done before the water change. The liver or egg yolk can be divided into small pieces the size of fingernails and thrown into the bottom of the tank, and the planarians will quickly attach to them and stick out of the throat to feed.

After a few hours, the planarian's body color will change significantly; The body color becomes darker when the liver is fed, and the body color becomes yellow when the egg yolk is fed.

Keeping fresh water in time is key to keeping planarians, especially in summer. When changing the water, use a brush to move the planarians one by one into a temporary container with clean water, pour out the water in the breeding tank, brush it clean, and then pour clean water, and finally move the planarians back. Planarians are sensitive to water quality, and once the feeding water begins to deteriorate, planarians will leave the bottom rocks, or float to the surface, or swim restlessly.

In this case, the water should be changed immediately.

There are not many questions in "College Learning Method", but they are all classics, and if you can really read it carefully, it is very useful that the cover is Einstein (physics) and Darwin (biology).

Red Wine Fresh grapes with intact fruits, washed and dried, cut into single grains, destemmed; Place in an airtight container, add sugar, and store for four to six months. It has an antioxidant effect and is beneficial to delay aging. Mature star fruit wine Wash the ripe star fruit, cut it into small pieces, dry it, add rock sugar and water to dissolve it over low heat, put the star fruit pulp, commercially available yeast and rock sugar water together in a sealed container, and store it for more than half a year.

It has the effect of removing wind and heat, smoothing the qi and moistening the lungs. Plum wine Wash the red flesh plums, filter the water once with cold boiled water, dry it, cut each fruit with a knife seven to ten knives deep, put it in a container, a layer of plums and a layer of sugar, and store it for forty to forty-five days. It has the effect of relaxing muscles, blood and eliminating fatigue.

Plum wine Ripe plums are washed and dried, placed in an airtight container, and the plums are submerged with rice wine heads (10:10:5 ratio of plums, rice wine heads, and rock sugar) and stored for four months.

**Bone spurs, rheumatic pain, cold, kidney disease. Precautions for the manufacture of fruit wine Fruit cleaning must be drained or naturally dried, so that the wine will not lose its taste. Natural fruits are the best way to make fruit wine, and if necessary, you can adjust the sugar content and add sugar to 20-25%.

Rock sugar should be used to make fruit wine, because the sweetness is purer and not easy to sour. All airtight containers must be removed from moisture, tightly closed, and stored in a cool place where direct sunlight is not available. When making fruit wine, it is necessary to use wine with an alcohol concentration of 35 or more, and the easier it is for the juice contained in the fruit to be soaked out, and the stronger the color.

Homemade cider, apples, rock sugar, white wine (below 50 degrees) 1::1 Choose Guoguang apples best, with the core is the best, add a little lemon slices, soak for 3 months, take out the apples and lemons, and serve. Amber in color, it can be drunk on its own or used to make cocktails.

Homemade strawberry fruit wine Ingredients: strawberries, completely sealed container, sugar, liquor Steps: 1. First, select the ripe strawberries and wash them.

2. Carefully remove the strawberry stems. 3. Air-dry or carefully dry the surface of the fruit to avoid mold. 4. Find a container that can be completely sealed, put a layer of strawberries and a layer of granulated sugar layer by layer, and reserve about 50% of the space for wine.

To make sure that every strawberry can get sugar, we might as well try shaking the container gently to let the sugar seep into the crevices). 5. Pour in liquor (distilled spirits such as rice wine and white wine) until it covers the top layer of strawberries, and place the container in a dark place for three months before drinking. Hint:

When making homemade strawberry fruit wine, because strawberries are very perishable when exposed to air, it is best to gently shake the bottle 2 or 3 times a day so that the strawberries can be evenly soaked in the rice wine. If you want to make the strawberry wine red, you can add sliced citrus to enhance the color. The finished strawberry wine can be drunk alone or mixed with other alcoholic beverages.

This week, I learned the four keys to writing a good essay: love, serious attitude, diligence, and hard work.

Love is to make yourself like composition class, concentrate on thinking, and complete the questions assigned by the teacher.

A serious attitude is to explain the importance of composition lessons. The composition occupies thirty points on the volume and is very important. Last semester, as long as I was deducted more than five points for each exam, my overall score would definitely not be excellent.

Diligent study means to learn more in ordinary life. The first point is reading, that is, reading more useful books, learning the language, words, and sentences of those authors, so that you can enrich the knowledge in your head, and you can use it in future writing. I also know that if you like a writer's article, take him as a role model and learn from him, so that you will grow faster.

The second point is to ask others for advice and learn what is not in the books.

Hard practice is to write more and speak more. I love blogging, I can train myself to find something interesting, I can get to the point, make people laugh at it, and understand what I'm writing about. When I have something new, I like to tell my dad about it, which can improve my speaking skills.

Writing an essay is a very complicated thing, there is no genius in the world, no one can succeed casually, and everyone needs to put in a lot of effort to write a good essay.

It's been a week since I started junior high school. During this week, I made many new friends, and became more and more familiar with the new teachers and the new environment.

In our 2nd class, there are a total of 8 students in the same class as elementary school. This week, Weiran went to participate in a swimming competition, but she never came. However, I met more new people.

For example, my position, my front and back, and a friend who plays basketball with me, and of course many more. I believe that the relationship between us will surely grow deeper with the development of time.

I have a good impression of each of the teachers, but some of them have areas that I feel need to improve. For example, we have a teacher who speaks in dialect during class, unlike the school rules that both students and teachers speak Mandarin. For me, this kind of class environment always makes me feel a little awkward, I don't understand the dialect very well, but if I can't understand it, the teacher will understand what he is saying.

I can still listen as much as I can listen to, and I don't know how to ask my classmates after class!

I also have a general understanding of the environment of middle school. In the Sipin class, the teacher gave us a snapshot of the campus, which gave us an idea of the school's achievements and internal facilities. For example, the laboratory building next to the teaching building, as well as the bamboo forest and lecture hall, are more important.

After class, I also confirmed it, and found that it was true, and I was quite satisfied.

There are many more subjects in secondary school than in primary school, and there are some elimination and increase in the middle of the process. For example, geography and biology are only in the first and second grades of junior high school, and the academic proficiency test is held at the end of the second year of junior high school. In the third year of junior high school, these two courses disappeared, and physics was added in the second year of junior high school, and chemistry was added in the third year of junior high school.

Anyway, the homework is very tight, and I need to put more effort into it.

The first week of junior high school life went smoothly, especially the last day of Teacher's Day, which drew a successful end to the week. The road to the first year of junior high school still requires me to work hard, and I still need to struggle. I wish I could climb over one mountain after another and see the "sea" that belongs to me.

However, I should start with every small step around me and do everything I do now. I believe that I can do it.

I'm also working on the school's social practice survey homework.,I've made a questionnaire on it with a questionnaire.com.,It's still collecting data.。