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The National College Entrance Examination, a volume of biology papers, 2021 answers
1. Multiple choice questions:
1. D。This was an error because the mitochondria's DNA was located in the mitochondria's matrix and not on the outer membrane, and it was responsible for the metabolism of the bacteria.
2. B。There are also Dna-protein compounds in the karyomimetics of prokaryotic cells, such as during DNA replication and replication, so this is an error.
3. A。The wheat could not directly absorb and utilize the N <2> in the soil. This was an error.
4. C。It can be seen from the change trend of the number of cells in the picture that the cell reproduction of Group B is accelerated after adding drug X. In Group C, drug X is added first to promote the cell reproduction, and then drug D is added to suppress the effect of drug X, slowing down the cell reproduction trend. If drug X is a protein, drug D may change its spatial structure and thus suppress its function. However, in Group C, drug D is added first to suppress the cell reproduction, and then drug X is added. This does not match the performance in the picture. This item is unreasonable.
5. (Because the document does not fully display the answer content of this part, the answer content of question 5 cannot be accurately provided. Please refer to the complete 2021 college entrance examination biology volume 1 answer document to obtain the accurate answer).
(As the document does not fully display part of the content of the non-multiple-choice questions, it is impossible to accurately provide the answers to the non-multiple-choice questions. Please refer to the complete 2021 National College Entrance Examination Biology Volume 1 answer document to obtain the accurate answers.)
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2026-10-06 10:40
Who is Xiao Yuxiu?
Xiao Yuxiu's original name was Yuxiu, and she was a character in the novel " Imperial Industry " written by Sleepspeaker. In the story of the TV series "Ode to Shangyang" adapted from the novel, she was Wang He's servant girl. She had protected her master wholeheartedly during the coup and was treated like a sister by Wang He. Xiao Qi took her as his adopted sister and gave her the surname Xiao. She married Song Huaien. After learning of Song Huai 'en's ambitions, he was unable to persuade him to change his mind and was imprisoned by him. He was later rescued by Wang He and placed under house arrest. When Song Huai 'en forced her to abdicate, she had mistakenly thought that Song Huai' en did not like her because of an arrow shot by him. She had ignored her children and jumped down from the city wall, not knowing that Song Huai 'en still had feelings for her. She had used her death to avoid being caught between Wang He and Song Huai 'en, and at the same time, to exchange for the safety of her children.
Hurry up and click on the link below to return to the original classic, Battle Through the Heavens!
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2026-10-06 10:40
The novel Jianghu Night Rain Ten Years Light Zhuge Qingyun
" Ten Years of Light in the Night Rain of Jianghu " was a martial arts novel written by Zhuge Qingyun in 1963. This novel had complicated relationships and plots.
The story began when the hero Wei Dan was killed by the evil sect. Wei Dan's son, Wei Ming Yuan, went to the "Ghost Valley" to take revenge for his father and learn from him. Wei Mingyuan learned the way to enter the valley with a lantern from Hu Ziyu, the Iron Fan Competing Zhuge, at the entrance of the Ghost Valley. He successfully became Ji Ziluo's disciple, but Hu Ziyu secretly poisoned Wei Mingyuan because of his old grudge with Wei Dan.
Two years later, Wei Ming Yuan stepped into the Jianghu to find his father's murderer. He met Xiao Mei at the Water Hero Competition and the two of them fell in love with each other. However, Wei Mingyuan's master, Ji Ziluo, went back on his word and forbade him from killing the Snowy Sea Duo. Later on, Wei Mingyuan learned that the current Ji Ziluo was impersonated by someone else, and the impersonator, White Eagle Bai Chongtian, even impersonated Wei Mingyuan's name to harm the Jianghu. As a result, Wei Mingyuan made enemies everywhere and was shot down into the river.
Wei Ming Yuan's love life was also quite bumpy. He and Xiao Mei were in love, but later got to know Du Suqiong. Xiao Mei secretly killed Du Suqiong out of jealousy, and Du Suqiong also chose to marry someone else because Wei Ming Yuan's life and death were unknown. After Wei Ming Yuan was saved, he married Xiang 'er, the granddaughter of a famous doctor who saved him. Later, he rekindled his old relationship with Xiao Mei. Xiao Mei gave birth to a child for Wei Ming Yuan and became a nun. She passed on her martial arts to Wei Ming Yuan before committing suicide. Although Wei Ming Yuan had many romantic relationships, the ending was tragic.
While waiting for the anime, you can also click on the link below to read the classic original work of The King's Avatar!
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2026-10-06 10:39
Various CP of the sin-hunting guide
In The Illustrated Guide to the Hunt, the main couple was Shen Yi and Du Cheng, who were set up by the two male leads. Du Cheng, played by Jin Shijia, was the captain of the criminal police with a strong sense of justice and boyfriend. Tan Jianci played Shen Yi, who was kind, gentle and capable. There was a sense of CP between them, a pure brotherhood. Du Cheng was always worried about Shen Yi, who had low martial strength. When he was in danger, he would try his best to find a rescue. He would also guide Shen Yi to shoot and express his trust in him. Shen Yi was emotionally introverted. When Du Cheng was suspended, he would secretly think of a way for him. His thinking was meticulous and logical. When Du Cheng faced the problem of innocence, he would use his own way to help him prove it. Their personalities sought common ground while reserving differences. They influenced each other and built a positive relationship.
Watching The Illustrated Guide to Sin Hunting 2 wasn't enough. Everyone, please click to read the novel!
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2026-10-06 10:39
Why are the fingers of primary school students trembling when playing with their mobile phones?
Primary school students 'fingers trembling while playing with their phones might have the following reasons:
One was muscle strain in the hand. For example, fine hand movements such as playing with the phone for a long time would cause muscle strain in the hand, resulting in muscle spasms and tension, resulting in hand trembling. The second was that the hand was cold. Often catching cold would cause muscle tension, which would cause hand trembling. The third was hyperthyreosis. If the hand trembling situation did not improve after treatment, blood could be drawn to check for this factor. The fourth was primary tremor. If there was no problem with the examination, it might belong to primary tremor. It could be relieved by taking drugs such as proprandial and Almar.
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2026-10-06 10:39
Live football match online
The following are some of the platforms where you can watch live football matches:
- iQiyi Sports and Mi Gu Video can watch the Asian Champions League competition between Shandong Taishan and Yokohama Marinos, and the Asian Champions League competition of Shanghai Shenhua.
- Some search engine results showed that they could watch the live broadcast of the Indian raid, the U17s of Ukraine, the U17s of Israel, and the U23s of Maharashtra Orange, but the specific platform was not specified (only speculated from the search engine results in the reference materials).
- There were also some commentators who were on platforms such as Lao Pu Shuo Ge Qiu, Qing Ge Qi Yun, etc., which might broadcast Mazatlan VS Tiger University and other Mo Chao matches, but it was not specified whether it was a live broadcast platform or a personal account.
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2026-10-06 10:38
Hand-drawn pictures of nerve cells in medical cell biology
Hand-drawn drawings of nerve cells in medical cell biology can be obtained or created from the following aspects:
1. ** Student creation **: In some biology courses, for example, the "Hand-drawn cell structure" activity carried out by high school students is a way to organize and present knowledge. You can refer to such student works to obtain inspiration related to nerve cell hand-drawn drawings. However, these works might be more focused on the basic structure.
2. ** Research material website **: For example, the Smart website provided more than 3000 scientific research materials in the field of biology or medicine. They were divided into four categories on the homepage, including cell biology-related schematics. There were graphic materials as small as the cell structure, which could be used to find the structure related to nerve cells for hand-drawn drawings. Moreover, the quality of these materials was high, and the materials could be split. The downloaded graphics were in PPM format, and each part of the graphics was an edited template that could be easily modified to meet the needs of nerve cell hand-drawn drawings.
3. ** For reference to existing works **: You can refer to the hand-drawn sketches of the pioneer of neuroanatomy, Fernando Ramón y Cajal. His works reveal the unique properties of different types of nerve cells, such as the coral-like dentrites of the Purkinje cells in the cerebrum and the conical cells in the cerebral cerebral cortexes. These are very useful for drawing the structure and shape of nerve cells.
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2026-10-06 10:38
Can I check in at 24:00 in the morning, primary school student?
From the hotel's point of view, it was up to the hotel's own rules to check in at 24:00 in the morning. Some hotels might allow guests to stay, but in order to ensure the cleanliness and maintenance of the rooms, the hotel usually needed to spend a certain amount of time cleaning and preparing the rooms after the guests checked out to ensure that the new guests could enjoy a clean and comfortable environment. If they were allowed to stay in the early hours of the morning, especially during peak hours, it might cause the room to be unable to be cleaned in time, which would affect the experience of subsequent guests.
From a customer's point of view, especially a family with children, it was not humane to wait until the normal check-in time when they arrived late at night. Many customers might feel that they had paid for a whole day's room but could not enjoy the corresponding service. This kind of experience could easily lead to dissatisfaction.
In response to this situation, many netizens 'suggestions were worth considering. For example, allowing early check-in within a certain period of time and calculating the fee according to the actual check-in time could balance the operational needs of the hotel and the reasonable demands of the customers to a certain extent. For example, hotels in some cities had a policy of checking in at 6 a.m. and checking out at noon the next day, which might be a more flexible solution. In addition, the establishment of industry standards and the improvement of relevant laws and regulations were also long-term solutions to such problems. He hoped that in the future, more hotels would take into account the actual needs of their customers when formulating policies, while also ensuring their own operational efficiency.
Therefore, different hotels have different rules on whether you can check in at 24:00 in the morning (0:00). It is recommended to contact the hotel in advance to understand their check-in policy.
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2026-10-06 10:38
What are the good books in the novel of the rebirth of mercenaries?
The following were some novels that involved the rebirth of mercenaries: "Mercenary Xiao Xun, who was betrayed by his comrades, was reborn. He vowed to find the traitor and uncover the mystery of his father's disappearance, thus stepping into the military camp"(The protagonist of this novel was mercenary Xiao Xun, who was reborn after being betrayed by his comrades),"Second Marriage by Decree: The First Daughter of the Imperial Concubine"(The heroine of the novel, Mo Cangyun, was originally a top-notch mercenary who was proficient in both medicine and poison. After rebirth, she counterattacked.)
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2026-10-06 10:37
National Armor Warrior novel
According to the information given so far, the mention of the National Armor Warriors was a plot that traveled back to the era of the National Armor Warriors. In it, people could awaken their armor during the college entrance examination to become Armor Warriors. There were different levels of armor awakening plots such as Howling Ci Nami, Flame Dragon Armor, Thunder Yatales, Asura Armor, and so on. However, it did not mention whether the title of the novel was " National Armor Warriors ", nor did it mention any other information about the novel, such as the author, the specific plot direction, etc. Therefore, he could not accurately answer more information about the National Armor Warrior novel.
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2026-10-06 10:37
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