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Recently, EV71, a human enterovirus, was infected in Fuyang, Anhui Province and other places,

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Recently, an enterovirus EV71 infection event occurred in Fuyang, Anhui Province and other places. The enterovirus EV71 is a kind of human enterovirus, which often causes hand, foot and mouth disease and viral angina in children. Severe children may have pulmonary edema and encephalitis. Please analyze and answer the following questions:

(1) From the perspective of different infected cells, virus EV71 belongs to ______ virus; The virus EV71 has a simple structure and is only composed of ______ and ______

(2) The virus EV71 must parasitize in the living cells of other organisms in order to live and reproduce. It reproduces in the way of ______

(3) From the perspective of immunology, if a person has ever suffered from hand, foot and mouth disease caused by virus EV71, he will no longer suffer from hand, foot and mouth disease caused by virus EV71. The reason is ______

(4) In daily life, many people regard antibiotics as a panacea, but the effect of using antibiotics to treat hand, foot and mouth disease is not significant. The main reason is that the pathogen causing hand, foot and mouth disease is a virus, and the target of antibiotics is ______

(5) According to what you have learned, please put forward several measures to prevent hand foot mouth disease (no less than two) ______

Best answer:

(1) The virus has no cell structure and is composed of protein shell and genetic material (nucleic acid). Enterovirus EV71 is a kind of human enterovirus

(2) Viruses must parasitize in living cells, rely on the genetic information in their own genetic material, and use the materials in the cells to create new viruses. Without living cells, they usually become crystals

(3) When a pathogen invades the human body and stimulates lymphocytes, the lymphocytes will produce a special protein, called an antibody, that resists the pathogen. After people recover from the disease, their bodies produce antibodies against this virus. This immunity is produced after birth. This antibody can only act on specific pathogens or foreign bodies, It has no resistance to other viruses, so it belongs to specific immunity

(4) Antibiotics are substances produced by fungi (in addition to actinomycetes) that can kill certain pathogenic bacteria and have no effect on viruses

(5) Measures to prevent infectious diseases: control the source of infection, cut off the route of transmission, and protect vulnerable persons

So the answer is:

(1) Human intestine; Protein coat; Genetic material;

(2) By relying on the genetic information in their own genetic material, we can use the materials in cells to create new viruses;

(3) Antibodies against virus EV71 are produced in the body;

(4) Kill some pathogenic bacteria;

(5) Control the source of infection, cut off the route of transmission, and protect the vulnerable

Answer analysis:

There is no explanation for this question

Test core:

Infectious disease: a disease caused by a pathogen that can spread between people or between people and animals is called infectious disease. Pathogens include viruses, bacteria, fungi, parasites, etc. Infectious diseases are infectious and epidemic.

The mountain stream is clear and hazy 2024-06-21 14:04:24

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Is mountain and water the opposite

Mountain and water are not antonyms.
"Mountain" means:
1. The towering part of the ground: earth mountain.
2. Shaped like a mountain: gable (the walls on both sides of a herringbone house. Also called "Fangshan").
3. Describing loud: mountains ring.
source:
1. "Inscription of Buddha Niche at Maiji Cliff, Tianshui County, Qinzhou": "The sound of water is quiet, and the mountains are full of caves."
2. "From the Garden to Longxing Yard": "The mountains rise in the sky, and the clouds cover the ground."
3. "The Biography of Li Shuangshuang, People Are Higher than the Mountain": "We walked around a mountain, the mountain turned, and suddenly the big mountain field with two slopes more than ten miles long flashed in front of our face."
4. "From the Garden to Longxing Yard": "The mountains rise in the sky, and the clouds cover the ground."
"Water" means:
1. A colorless, odorless, transparent liquid.
2. River: river water.
3. The general name of rivers, lakes and seas.
source:
1. Mencius: Devotion: "It's hard to find water after the sea, but it's not clouds except Wushan."
2. "Pond": "The spring is silent and cherishes the trickle, while the shade of the tree shines on the water and loves the softness."
3. Send Meng Haoran to Guangling from the Yellow Crane Tower: "The lone sail is far away from the blue sky, and only the Yangtze River flows in the sky."

What does the rising sun mean

Rising sun warm sun means rising sun, warm sun. Warm sun means warm sun.
Rising sun, Chinese vocabulary. Pinyin: x ù r ì, meaning: the rising sun.
Origin: "Poem · Wind · Pao with Bitter Leaves": "When the wild geese sing, the rising sun begins to dawn."
example sentence:
1. Wei Fuxuan's Song of Rising Sun: "The future is not so bright, and the rising sun shines on all sides."
2. The Thirty Rhymes of Huizhen Poems by Tang Yuanzhen: "The splendor is still rising, and the rising sun is becoming more and more brilliant."
3. In the poem "Walking on the lake at dawn" written by Huang Jin of the Yuan Dynasty, "Walking on the lake at dawn is very important, and the rising sun is half green."
Synonyms: morning light, morning sun, morning sun, sunrise.
Antonyms: sunset, sunset, setting sun, setting sun.

Is set a knowing word

Set is a knowing word. The pinyin of set is j í, which originally means that there are many birds on the tree, and extended to mean convergence and confluence. It also refers to the market and town where people gather.
come from:
1. The Book of Songs - Tang Feng - Bustard Feather: "Su Su Bustard Feather is gathered in the bud."
2. "The Book of Songs, Xiaoya, Bianbian": "If it rains and snows, first gather the graupel."
3. Mei Cheng's Seven Hair: "Chase devious beasts and collect light birds."
4. Han Feizi Jielao: "When the rain falls, the wilderness is quiet."
5. One of Du Fu's poems "Narrating the Ancient Times": "People in the city gather every day, and compete with each other for taper knives."
6. The Book of Songs, Songs of Zhou Dynasty, and Small Life Insurance: "If you are not worthy of your family's difficulties, you will find it in Polygonum."
Usage: as attribute, adverbial.
Example: Xie Taifu's cold snow day collection, talking about the text with his children.
Sentence making:
1. The mayor was very proud of himself. He came to the market.
2. Perhaps for a mature market project, this is part of its normal life cycle.

Do you have the word bibliography

There is the word "bibliography", which is the catalog arrangement of a batch of books, also known as literature catalog and book catalog. "Bibliography" comes from the "Southern History · Zhang Zuan Biography": "Zuan is a firm pursuit, and I want to see all the books in the pavilion. I try to hold four books and say: 'If I finish reading this, I can say that I will be an excellent official.'"
"Bibliography" sentence:
1. There are two methods of bibliographic description in ancient China: mutual writing and different types.
2. I think I feel the same way when I read e-books and playlists, but I think some things will still be lost.
3. In most cases, all libraries use the bibliographic system to manage and organize the massive information in order to make it orderly and convenient for readers to consult.
4. Many libraries use customized toolbars to point to bibliographies and commonly used full-text databases.
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