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The following is a sample of the questions and answers for the biology competition: ** I. Multiple choice questions (2 points for each question, 50 points in total)** 1. The rabbit's mR A was transferred into E. Coli cells. E. Coli could synthesize rabbit's hemoglobin. This experiment explained (D) - A. Rabbit Hemoglobin-synthesizing Gene Entering E. Coli: mR A is not a gene, A error. - B. [The synthesis of protein is carried out in the Ribosome. The focus of this experiment is not on the synthesis site. B does not meet the meaning of the question.] - C. Rabbit DNA can instruct E. Coli to synthesize protein: it's inserted into the DNA instead of the DNA, C error. - D. The rabbit's messenger messenger acid could allow E. Coli to synthesize the rabbit's hemoglobinduring translation. The messenger acid could be used as a template to guide the synthesis of protein. 2. Which of the following statements about mitochondria and plastids is correct (D)? - A. Similar protein: The two have different functions, and the type of protein they contain is quite different. Wrong A. - B. The DNA contained in it was similar: the DNA of mitochondria and the DNA of the plastids had differences in structure and function, B error. - C. The essence of the production of ATPis the same: mitochondria produce ATPthrough oxyphorification, while the plastids produce ATPthrough photosynthesis. The essence is different, C error. - D. The gases produced or consumed are similar: mitochondria consume oxygen to produce carbon dioxide, while the plastids consume carbon dioxide to produce oxygen. There are gas production and consumption conditions, D is correct. 3. The eyepieces were not changed. First, the cells were observed with the 10x objective lens of the microscope, and then the 40x objective lens was changed to continue the observation. The result was (C) - A. Like larger, darker field of vision, more cells: should have fewer cells, A error. - B. If the image is smaller, the field of vision is brighter, and there are fewer cells, then the image strain is greater, and the field of vision is darker. - C. The image is larger, the field of view is darker, and the number of cells is fewer. The objective lens is larger, the magnifying factor is larger, the image is larger, the field of view is darker, and the number of cells seen is reduced. C is correct. - D. The image is larger, the field of view is brighter, and there are many cells. The field of view should be darker, and there should be fewer cells. D is wrong. 4. Which of the following descriptions of transfer DNA is correct (D)? - A. Each tR A can recognize and transport a variety of aa: each tR A can only recognize and transport one aa, A error. - B. The three bases of the transfer R A were the codons that determined the position of the aa. - C. The synthesis of transfer R A is in the plasma, while tR A is synthesized in the nucleus. - D. The tR A recognizes the codons on the messenger R A. The tR A recognizes the codons on the messenger R A through its anti-codons. D is correct. 5. The scientists have developed a chemical interference technique that is expected to silence the human body's pathogenic genes. This interference technique is likely to interfere with (B) - A. The decomposition process of the ATP-binding gene: has little to do with the silencing of the pathogenic gene, A error. - B. The synthesis process of a certain messenger DNA: Silencing the gene may interfere with the synthesis of the messenger DNA, thus preventing gene expression. B is correct. - C. Many of the DNA replication processes were mainly targeted at the suppression of gene expression, not the DNA replication process. - D. Transamination during protein metabolism: unrelated to gene silencing, D error. 6. In the description of the picture on the right, the incorrect part was (D) - A. The cell may not be undergoing mitosis, but it must be in the middle stage of mitosis: this cell may be a cell in the middle stage of mitosis or mitosis, A is correct. - B. The fourth was a single chopstick, consisting of two chromatids, which were connected by a kinetochore. This was the basic structure of a chopstick. B was correct. - C. There were two pairs of homolog genes in the cell, namely, a pair of homolog genes, and another pair of homolog genes. According to the definition of homolog genes, C was correct. - D. is synthesized by 7. A type of genetically modified virus C is formed by the DNA of the A virus and the protein shell of the B virus. Virus C is used to infect host cells, and a large number of descendant viruses are produced in the host cells. The descendant viruses have the characteristics of (C). - A. The characteristics of the C virus: The characteristics of the offspring virus are determined by the genetic material. The genetic material of C is the DNA of A, and A is wrong. - B. B virus characteristics: B's protein shell does not determine the characteristics of the offspring, B is wrong. - C. The characteristics of the A virus: Because the genetic material is the A's DNA, the offspring has the characteristics of the A virus. C is correct. - D. Unique characteristics of the offspring: mainly determined by genetic material, not unique to the offspring, D error. 8. The expression of traits in an organism follows the expression principle of "DNA→ DNA → protein". The following are several statements related to this. The incorrect one is (D) - A. In the life of A cell, DNA does not change, but the molecules of DNA and protein change. DNA is relatively stable, while the molecules of DNA and protein change according to the functional needs of the cell. - B. "DNA→ R A" was generally completed in the nucleus, while "R A → R A" was completed in the plasma. Transcription was mainly in the nucleus, while translation was in the plasma. B was correct. - C. In different cells of the same individual, the DNA was the same, but the DNA and protein were different. C was correct because of the selective expression of genes. - D. In the life of a cell, the type and quantity of DNA, DNA, and protein remain the same. ** 2. Non-multiple choice questions (50 points in total)(This is only an example. You can add more questions and answers according to your actual needs)** 1. (10 points) Please briefly describe the steps involved in the process of gene expression. - Gene expression included two main processes, namely, translation and replication. Transcription referred to the process of using a single strand of DNA as a template to synthesize the DNA. In the nucleus, the DNA template was bound to the DNA primer by the DNA primer, and the DNA primer was synthesized according to the principle of base complementation. During this process, the A (adenine) in the DNA was paired with the U (uracil) in the DNA, the T (thymine) was paired with A, the G (guanine) was paired with C (cystine), and the C was paired with G. The transcribed form of the R A included messenger R A (messenger R A), tR A (transfer R A), and rR A (Ribosome R A). - Translation was the process of synthesizing a protein using the mR A as a template. After entering the cell's nucleus, the mR A would combine with the Ribosome. The anti-codons of the tR were complementary to the codons on the mR A. The anti-codons were connected according to the order of the codons on the mR A to form a protein chain, which was finally processed to form a protein with specific functions. 2. (10 points) Comparing the similarities and differences between the two types of breathing. - Similar points: - (1) It is the process of decomposing organic matter to release energy. - (2) The first stage takes place in the cellular matrix, and there is a process of decomposition of glucose into methyruvate. This stage will produce a small amount of Ang. - The difference: - (1) Aerobic breathing requires oxygen to participate, while anoxia does not require oxygen. - (2) The places for oxygen breathing include the cellular stroma and mitochondria, while the places for oxygen breathing only include the cellular stroma. - (3) The products of oxygen breathing are carbon dioxide and water, and the products of oxygen breathing are alcohol and carbon dioxide (such as yeast oxygen breathing) or actic acid (such as animal muscle cell oxygen breathing). - (4) Aerobic breathing releases a large amount of energy, while anoxia breathing releases a small amount of energy. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

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I'm not a real person, but a fan of online literature. I'll try my best to answer.

Here are some precious riddles and answers: 1. The five brothers lived together. They had different names and heights. (Hit a human organ)[Finger] 2. A black child never opened his mouth. If he did, his tongue would fall out. (Hit a plant fruit)[Melon Seed] 3. When people took off their clothes, it put on clothes. When people took off their hats, it put on hats. (Hit One Item)[Cloakrack] 4. The room was square, with doors but no windows. It was hot outside, but it was frosty inside. [Freezer] 5. He carried two small bags with him every day. If he lost one, he would be laughed at. (Hit one item)[Stocking] 6. Seven or eight brothers sat around the pillar. As soon as they separated, their clothes would tear. (Hit a plant)[Garlic] 7. Tall buildings were built with only wood. There were no tiles or bricks. People walked under the water, and the water was above them. [Umbrella] 8. He wore a large leather coat and ate his fill of wild grass. After the harsh winter, he offered his fur. (Beat an animal)[Sheep] 9. A little girl was born in the middle of the water. She wore a pink dress and sat on a green boat. (Hit a plant)[Lotus] 10. Her face was as white as snow, and her body was as hard as iron. She washed three times a day and rested in the cabinet at night. (Make a set of daily necessities)[Bowl] 11. It had a face but no mouth, legs but no hands. Although it had four legs, it could not walk on its own. (Make a set of daily necessities)[Table] 12. A fair and tender baby, blowing bubbles in the bath, washing his body, and then disappearing. [Soap] 13. He was dressed in green, had a watery stomach, and had many sons, all of whom had black faces. (Hit a plant)[Watermelon] 14. The bacteria were not afraid of being small. With it, they could see it. Laboratory tests needed it, and scientific research was indispensable. (Hit One Item)[Microscope] 15. He was like a big scorpion, holding up a child, scratching his intestines and singing a good song. (Play a musical instrument)[Pipa] 16. A pen can't draw. It's the same as electricity. If you want to know if there's electricity, you can ask it. [Test Pen] 17. A tube of white paste, sooner or later squeezed a portion, brothers thirty-two, all said it was good. (Buy a set of daily necessities)[Toothpaste] 18. It was not afraid of water or fire, and there was one in every kitchen. (Make a set of daily necessities)[pot] 19. An old man would neither run nor leave, and he would shake his head whenever he was asked to sleep. (Hit an object)[Tumbler] 20. The eldest sister used a needle without thread, the second sister used thread without needle, the third sister did not work when she lit the lamp, and the fourth sister did not light the lamp when she did work. [Bee, Spider, Firefly, Weaver] 21. The hunchbacked father-in-law had infinite strength, and he liked to carry whatever he wanted. (Hit One Item)[Bridge] 22. He wore a red hat and colorful clothes. He never sang opera and liked to hang his voice. (Beat an animal)[Rooster] 23. First, he would build the cross street and then the moon flower terrace. His body didn't need to move, and his food would come automatically. (Hit an animal)[Spider] 24. It had a head but no neck, and its body was cold. It couldn't fly with wings, but it could fly without legs. (Beat an animal)[Fish] 25. Wearing a flowery cotton jacket, singing and croaking, catching pests in the fields, making contributions to the harvest. (Beat an animal)[Frog] There were also some riddles about babies: 1. A baby was born with an antenna. Guess what it was? Answer: Teletubs 2. The white and tender baby sat upright. As soon as the sun appeared, the baby became smaller and disappeared. (Hit an object) Mystery: Snowman 3. Baby White, Baby White, eat tree leaves, live till old age, build a small house for yourself, and sleep in it. (Beat an animal) Answer: Silkworm 4. Big sister-in-law Qing, five feet tall, holding a fat baby in her arms. The fat baby was really cute, with a pointed head and tufts of hair. (Shoot a crop) Answer: corn 5. Mystery: Happy childhood (drink name) Mystery: Baby music 6. [Leilei Jinyin (new title): Stone Baby] 7. Shencheng Children's Song (Food) Mystery: Shanghai Baby Music 8. Bezoar (2008 catchphrase) Mystery: Stone Baby 9. Design Baby Clothes (Spoken Language) 10. Baby is a precious daughter (Lihe character) Mystery: Bei Bei baby girl 11. Tears on the lonely piano (nickname) Mystery: Baby 12. Baby Is So Cute 13. Xinmao Baby (stock) Mystery: Bunny 14. Lying Child (software name) Mystery: Text Baby 15. Gold, White Jade, Autumn Water Condensation (Cosmetics) Mystery: Baby Cream 16. Like a drizzle is more precious (anime character) Mystery: Teletubs 17. Baby is the lucky one (Olympic mascot name) 18. Giving the Guest a Hint (Teletubby) Mystery: Desi 19. Baby is in good health (Chinese medicine name, upstairs) There were also some simple riddles: 1. A piece of cake, burned by the fire, built a building, indispensable. (Hit a building) Mystery: Brick 2. Green cakes, red cakes, can't be eaten, can't be bitten, can't be bought in snack shops, and can't be bought without building a house. Answer: Brick 3. Green square cakes and red square cakes couldn't be eaten or bitten. They couldn't be bought in food stores, and they were indispensable for building houses and walls. (Hit a building) Mystery: Brick 4. It was a thin, square piece of land, and it settled down on the wall beside the pool. (Building) Mystery: Tile 5. Mud to do, fire to burn, there are red and green elephant cake, high-rise buildings rely on it to build the motherland to make contributions. (Hit a building) Mystery: Brick 6. It was squarish and no one wanted it on the roadside. Without it, tall buildings could not be built. (Hit a building) Answer: Brick There were also some riddles related to plants and animals: 1. He was twelve feet tall, thin and long, without long hair, wearing green silk pants and a red pearl velvet hat. (Hit a plant) Mystery: Sorghums 2. When he was young, he would be green and old, and when he was old, he would be red. In the beginning of summer, he would recruit naughty children. He would dance bamboo poles and invite them to the ground. After eating, his hands would be red. (Hit a plant) Mystery: Mulberry 3. He was wearing a white linen shirt with a red shirt wrapped around his body. He was fair and fat, and he contributed to the construction of the country. Answer: Peanut 4. The tall man was green all over, with a golden round face and a happy face. He smiled at the sun every day and bore countless fruits. (Hit a plant) Mystery: Sunflower 5. It looked like bamboo, but it wasn't bamboo. It was not too thick. It was either purple or green. It only ate when it was born and didn't eat when it was cooked. Answer: Sugarcane 6. When he was young, his stomach was empty. When he grew up, his hair was fluffy. His sister never left him when she was rowing the boat, and his brother was fishing in his hands. Answer: Bamboo 7. In winter, the dragon lay down, and in summer, the branches and leaves opened. The dragon's beard grew up, and the pearls lined down. (Hit a plant) Answer: Grape 8. A bell rang on the water, but there was no sound. When he looked carefully, his eyes were wide open. (Hit a plant) Mystery: Lotus Seed 9. Riddle 1: The elephant's ears are like cattail leaf fans, its body is like a hill, and its nose is long and long. It helps people do work. 10. Riddle 2: Crab eight feet, lift face drum, two pairs of scissors drum dance, born to run amok and domineering, often spit foam. 11. Riddle 3: Frogs wearing cotton jackets, singing and croaking, catching pests in the fields, making contributions to the harvest. 12. Riddle 4: Rooster wearing a red hat, wearing colorful clothes, never singing opera, like to raise the voice. 13. Riddle 5: Crane She had long and thin legs, wore a red hat, and a white robe. 14. Riddle 5: The cuckoo comes before summer, but nowhere to find it after autumn. Sow the seeds quickly and come every year. 15. Riddle 6: The dragonfly has a nail in its tail, two bean-like eyes, wings but no hair, and legs but can't walk. 16. Riddle 7: The ostrich was a big black man with two fans on his waist. He fanned himself a few times with every step he took. 17. Riddle 8: The dog has a dumpling head, plum blossom legs, and a commanding knife hanging on its butt. It is taller than its standing position. 18. Riddle 9: The goat is not old and has a big beard, no matter who it meets. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

There were some software that could take pictures to solve difficult problems online. For example, Homework Help was a widely used tool for searching questions and answering questions in primary and secondary schools. It had 90% of the national primary, middle, and high school subject materials, as well as 3 million top students answering questions online. When using it, first open the homework help to enter the first interface, click the search question and answer icon button, open the camera permission to enter the photo page, click the photo icon button to take a photo, adjust the questions to be searched on the editing page, click confirm, and finally find the questions to be searched on the phone, click the answer to see the solution process. University Search Questions was a search tool for university students. It could search for answers to homework in various university disciplines, such as university mathematics, university English, university physics, and so on. Its functions included photo answering, photo translation, text search, thesis report, scanning code to search for books, image scanning, homework question answering, and so on. When using the photo answering function, one only needed to take a photo of the question to get the answer analysis. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The following are some examples of the types of questions and answers that may be involved in the sixth grade mathematics competition: ##1. Calculation Class 1. [Question: Calculating 1.25×17.6 + 36.1 × 0.8+2.63×12.5] - Answer: - First of all, the equation can be transformed into: 1.25×17.6+36.1 × 1 = 1.25×17.6 + 36.1× 1 = 26.3 × 1.25. - It was further converted to: 1.25×17.6+45.125 + 26.3×1.25. - Using the distribution law of multiplication: 1.25×(17.6 + 26.3)+45.125. - First, calculate the value in the parenthesis: 1.25×43.9+45.125. - Multiplication: 54.875+45.125 = 100. 2. [Question: Calculating 7.5×2.3+1.9×2.5] - Answer: - Splitting 7.5 into 2.5×3, the equation becomes 2.5×3×2.3+1.9×2.5. - That is, 2.5×(3×2.3)+1.9 × 2.5 = 2.5×6.9+1.9×2.5. - Then, using the distribution law of multiplication: 2.5×(6.9 + 1.9)=2.5×8.8 = 22. ##2. Integer-Based Operations 1. [Question: Calculating 1999+999×999] - Answer: - Divide 1999 into 1000+999, and the formula becomes 1000+999+999×999. - Extracting the common factor 999, you get: 1000+999×(1 + 999). - First, calculate in the parenthesis: 1000+999×1000. - After extracting the common factor 1000, it was 1000×(1+999)=1000×1000 = 1000000. 2. [Question **: Calculating 8+98+998+ 9998 + 9998+99998] - Answer: - Rounding up each number, the original formula =(10 - 2)+(100 - 2)+(1000 - 2)+(10000 - 2)+(100000 - 2). - Removing the parenthesis, it was 10+100+ 1000 + 10000+100000-2×5. - The result was: 111110 - 10 = 111100. ##Three and Four Mixed Operations 1. [Question: Calculating (78.6 - 0.786×25+75%×21.4)/15×1997] - Answer: - First, calculate the formula in the parenthesis. 0.75 = 75%, then the formula becomes: (78.6-0.786×25 + 0.75×21.4)/15×1997. - Distortion of the formula in the parenthesis: 78.6×(1 - 0.25)+21.4 × 0.75 × 15×1997. - That is,(78.6×0.75+21.4×0.75) × 15×1997. - Using the law of multiplication: (78.6 + 21.4)×0.75 div15 ×1997. - First, calculate in the parenthesis: 100×0.75 × 15×1997. - According to the order of calculation: 75 div15 ×1997 = 5×1997 = 9985. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

As a fan of online novels, I don't have any updates on novel competitions or original online novel competitions. However, they could use search engines or related novel websites to inquire about the latest novel competitions and original online novel competitions.

Online novel competitions were a common phenomenon. Many online novelists would participate in various competitions to showcase their writing skills and the quality of their works. These competitions were usually organized by novel websites or literary organizations, such as the "Fantasy Online Writing Competition" and the "Science Fictions Online Writing Competition". The authors who participated in the competition could receive various rewards such as trophies, bonuses, and exposure. At the same time, the competition would also help promote online novels and attract more readers.