Biology elective, a must-memorize knowledge point encyclopedia, PEP edition
The following are some of the must-memorize knowledge points for the Biology elective 1 of the People's Education Version: 1. **DNA related knowledge ** - ** Dissolution **: DNA and protein have different dissolutes in different concentration of NaCl-based solutions. This feature can be used to separate DNA from impurities. DNA is not dissolved in alcohol solution, but some protein is dissolved in alcohol, which can further separate DNA and protein. - ** Resistance to acids, high temperatures, and deterrents **: The protein has no effect on DNA. Most protein cannot withstand high temperatures of 60 - 80°C, while DNA will only denature above 80°C. The deterrents can disintegrate the cell membrane, but it does not affect DNA. - ** Identification **: Under the conditions of boiling water bath, DNA will be dyed blue when it comes into contact with diamines. diamines can be used as a reagent for DNA identification. - **DNA extraction and identification of experimental materials **: Biological materials containing DNA are acceptable, but biological tissues with relatively high DNA content are better. - ** Disrupting cells to obtain the Dna-containing fluid (chicken blood cells and plant cells as examples)** - Chicken blood cells: Distilled water was added to the chicken blood cell fluid, stirred with a glass rod, and filtered to obtain the filtered fluid. Distilled water was a hypotonic liquid for chicken blood cells. A large amount of water entered the blood cells and caused them to burst. Stirring accelerated the rupture and released DNA. - Plant cells (taking onions as an example): Add the washing agent and salt to the chopped onions, stir and grind them thoroughly, and then filter them to obtain the grinding liquid. The washing agent dissolved the cell membrane, which was conducive to the release of DNA, while salt (NaCl2) was conducive to the dissolution of DNA. If the grinding was insufficient, the DNA in the nucleus would not be completely released, which would affect the results of the experiment. The filtered liquid of this step may contain impurities such as protein, glycan, and R A. - ** Removing impurities in the filtered solution **: There are three methods: one is to use the different dissolutes of DNA in different concentration of NaCl-solution; the second is to use a protein to decompose the protein but not the DNA; the third is to use the different denature temperatures of the protein and DNA. - **DNA extraction and identification procedures (onion as an example)** - Weigh 30 grams of chopped onions, add a small amount of Quartz sand to aid grinding, pour 10mL of 2-mole/L solution of NaCl3 and grind them thoroughly (onions can be treated first to reduce irritation). The purpose of grinding is to break the cells and let the DNA dissolve in the NaCl3 solution. There is no need to grind them into a porridge paste, and you can't use a whisk. - After grinding, it was filtered with a funnel and gauze to obtain the filtered liquid. - Add 20ml of 95% alcohol solution to the filtered solution (pour it slowly along the beaker wall without shaking or stirring). The upper layer of the solution will separate out a white, fibre-like viscous substance (DNA), which can be gently rolled up with a glass rod. 2. ** Traditional fermentation technology ** - ** Fruit wine making ** - ** Principle **: Yeast's anoxide-free breathing, the reaction formula is C6H12O6 → 2C2H50H +2CO2 + energy. - ** Source **: Wild yeast attached to grape skin or artificially cultivated yeast. - ** Condition **: 18 - 25 ° C, sealed, venting (CO2) at intervals. - ** Detection **: Under acidic conditions, the reaction between the alcohol and the potassium bichromate is grayish-green. - ** Fruit vinegar production ** - [Principle: Aerobic Breathing of Acetic Acid bacteria.] When O2 and sugar source were sufficient, sugar would be decomposed into vinegar; when O2 was sufficient and sugar source was insufficient, alcohol would be transformed into jumped and then into vinegar. Read more exciting novels for free
Vitamin in the biological components of bitter wheat
The vitamins in bitter wheat included the B group of vitamins (such as vitamins B1, B2, and B6) and the E group. Among them, B vitamins played a key role in the process of converting food into energy, and also contributed to the maintenance of heart health and nervous system. Vitamin E had a strong anti-oxidization effect, which could suppress and eliminate free radical in the human body, activate the engulfing cells, and eliminate skin coloring, enhance the human immune function, and reduce the negative effects of anti-cancer drugs. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the good novels that record youth?
Here are some good youth novels: - Wild Star Light (Author: Zhong Jin). - "Maintaining the Dignity of the Supporting Female Lead"(Author Xi He). - "The King Has Donkey Ears"(Author: Seven Treasures Pastry). - Tower Drowning (Author October) - "Goddess of the Abyss"(Author: Vine) - "My Mr. Ostrich"(Author: Han Yan). - [Wild Hunting](author's book). - Falling (Author: Sweet and Vinegar Fish) - My Swan (Author: Little Red Apricot) - "I Still Haven't Suppressed Her"(Author: Planet Su). - Shen Lingwei and Lu Qichen. - Jiang Yinuo and Lu Chenfeng. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the names of the female characters in Battle Through the Heavens?
The names of the female characters in Battle Through the Heavens were Xiao Xun Er, Medusa (Cai Lin), Yun Yun, Little Fairy Doctor, Han Yue, Ya Fei, Zi Yan, Nalan Yanran, Han Xue, Qing Lin, Yao Ye, Cao Ying, and there was also a minor female character whose name was not mentioned, and who was only known to be an alchemist from the Bai family, one of the Pill Tower's five great families. Hurry up and click on the link below to return to the original classic, Battle Through the Heavens!
First Sequence System Novel1
" First Sequence " was a doomsday wasteland novel written by the Talking Elbow. It was a system style novel with a supernatural worldview. In the novel, a new era began after the world was destroyed. The main character, Ren Xiaosu, was a refugee living outside the stronghold. After he fell unconscious, he awakened the palace in his head and needed other people's gratitude points to become stronger. This setting could be seen as a system element. The protagonist was born in a humble background but was not self-conceited. In order to survive, he worked hard to earn money, learn skills, and occasionally learn other people's skills through his golden finger. In such a turbulent world, he fought with mutated beasts and mutated plants, gradually rising to become a leader with his own abilities. He led mankind to defeat artificial intelligence and eventually changed the world. At the same time, he also skillfully dealt with the wealthy families and had a love story with Yang Xiaojin, the young lady of the aristocratic families. Hurry up and click on the link below to return to the super classic " Lord of Mysteries "!
What is the co-evolution of living things?
The theory of co-evolution was co-founded by American ecologists Ehrlich and Raven. It referred to the co-evolution of two interacting species in the process of evolution. This was a type of evolution in which one species evolved due to the influence of another species, in which "mutualism" played a key role. For example, between plants and herbivorous insects, plants might undergo genetic changes due to the pressure of herbivorous insects, and this change would cause genetic changes in insects. This included co-evolution between different species (there was no co-evolution between the same species), as well as co-evolution between organisms and the organic environment. For example, the selection effect of the organic environment could change the gene frequency of the population to promote the evolution of organisms in a specific direction, and biological evolution would in turn affect the organic environment. Competition and synergy were common among biological individuals or populations. A large number of studies had shown that synergy could allow organisms to achieve their own existence and reproduction in nature (maximum fitness) at a small cost. Cooperation was more common than competition and more conducive to biological evolution. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Planning around Longguang Jiuyu Mansion
The surrounding planning of Longguang Jiuyu Mansion is as follows: In Santang Town, the surrounding planning has been adjusted. For example, the original plot 02 - 30 will be adjusted to 4.0 as the land for affordable housing. The original plots 02 - 42, 02 - 43, and 02 - 44 will be merged and adjusted to Class II urban residential land. The branch road between the original plots 02 - 43 and 02 - 44 will be cancelled and replaced with an internal flexible road. A new Class 9 kindergarten will be added. It is surrounded by mature residential areas such as Zhaoshang Xiyuan, Hengda Yayuan, Dadu Mansion, Lianfa Zhenjing, etc. Within 2 kilometers, there are Santang Town National Primary School, Xingning East First Junior High School, and Santang Campus of No. 14 Middle School in NanNing City. In addition, the south side of Dragon Light Heavenly Palace's Jiuyu Mansion was adjacent to the planned Zhaizi Mountain Park.
Primary school students 'anti-epidemic record form template
Based on context alone The following is a template for a primary school student's anti-epidemic record form: ** 1. Basic Information ** 1. ** Name **:[Student Name] 2. ** Grade **:[Grade] 3. ** Class **:[Details] ** 2. Date Record (in weeks)** #(1)[week start date-week end date] 1. ** Daily body temperature monitoring ** - ** Morning temperature (Celsius)** - Monday: [Enter body temperature] - Tuesday: [Enter body temperature] - Wednesday: [Enter body temperature] - Thursday: [Enter body temperature] - Friday: [Enter body temperature] - Saturday: [Enter body temperature] - Sunday: [Enter body temperature] - ** Night temperature (Celsius)** - Monday: [Enter body temperature] - Tuesday: [Enter body temperature] - Wednesday: [Enter body temperature] - Thursday: [Enter body temperature] - Friday: [Enter body temperature] - Saturday: [Enter body temperature] - Sunday: [Enter body temperature] 2. ** Health Status ** - ** Cough symptoms ** - Monday: [Yes/No], if cough, describe the degree (mild/severe) and frequency of cough. - Tuesday: [Yes/No], if cough, describe the degree (mild/severe) and frequency of cough - Wednesday: [Yes/No], if cough, describe the degree (mild/severe) and frequency of cough - Thursday: [Yes/No], if cough, describe the degree (mild/severe) and frequency of cough. - Friday: [Yes/No], if cough, describe the degree (mild/severe) and frequency of cough. - Saturday: [Yes/No], if cough, describe the degree (mild/severe) and frequency of cough. - Sunday: [Yes/No], if cough, describe the degree (mild/severe) and frequency of cough. - ** Are there any symptoms of fatigue? ** - Monday: [Yes/No]. If there is fatigue, describe the degree of fatigue. - Tuesday: [Yes/No]. If there is fatigue, describe the degree of fatigue. - Wednesday: [Yes/No]. If there is fatigue, describe the degree of fatigue. - Thursday: [Yes/No]. If there is fatigue, describe the degree of fatigue. - Friday: [Yes/No]. If there is fatigue, describe the degree of fatigue. - Saturday: [Yes/No]. If there is fatigue, describe the degree of fatigue. - Sunday: [Yes/No]. If there is fatigue, describe the degree of fatigue. - ** Any other discomfort (such as headache, breathing difficulties, etc.)** - Monday: [Yes/No]. If there is any other discomfort, describe the symptoms in detail. - Tuesday: [Yes/No]. If you have any other discomfort, describe the symptoms in detail. - Wednesday: [Yes/No]. If you have any other discomfort, describe the symptoms in detail. - Thursday: [Yes/No]. If you have any other discomfort, describe the symptoms in detail. - Friday: [Yes/No]. If you have any other discomfort, describe the symptoms in detail. - Saturday: [Yes/No]. If you have any other discomfort, describe the symptoms in detail. - Sunday: [Yes/No]. If you have any other discomfort, describe the symptoms in detail. 3. ** Outings ** - ** Are you going out? ** - Monday: [Yes/No] - Tuesday: [Yes/No] - Wednesday: [Yes/No] - Thursday: [Yes/No] - Friday: [Yes/No] - Saturday: [Yes/No] - Sunday: [Yes/No] - ** The purpose of going out (such as going to school, shopping, walking, etc.)** - If you go out on Monday: [fill in purpose] - If you go out on Tuesday: [fill in purpose] - If you go out on Wednesday: [fill in purpose] - If you go out on Thursday: [fill in purpose] - If you go out on Friday: [fill in purpose] - If you go out on Saturday: [fill in purpose] - If you go out on Sunday: [fill in purpose] - ** Do you want to wear a mask (when going out)** - Monday: [Yes/No] - Tuesday: [Yes/No] - Wednesday: [Yes/No] - Thursday: [Yes/No] - Friday: [Yes/No] - Saturday: [Yes/No] - Sunday: [Yes/No] - ** Do you want to maintain social distance from others (when you are out)** - Monday: [Yes/No]. If not, describe the approximate distance. - Tuesday: [Yes/No]. If not, describe the approximate distance. - Wednesday: [Yes/No]. If not, describe the approximate distance. - Thursday: [Yes/No]. If not, describe the approximate distance. - Friday: [Yes/No]. If not, describe the approximate distance. - Saturday: [Yes/No]. If not, describe the approximate distance. - Sunday: [Yes/No]. If not, describe the approximate distance. 4. ** Health Habits ** - ** Number of times to wash hands (daily)** - Monday: [Number of times] - Tuesday: [Number of times] - Wednesday: [Number of times] - Thursday: [Number of times] - Friday: [Number of times] - Saturday: [Number of times] - Sunday: [Number of times] - ** Do you want to use hand sanitizer/soap (when washing hands)** - Monday: [Yes/No] - Tuesday: [Yes/No] - Wednesday: [Yes/No] - Thursday: [Yes/No] - Friday: [Yes/No] - Saturday: [Yes/No] - Sunday: [Yes/No] #(2)[Next week's week start date-week end date](Continue to fill in the above) Such a record form would help schools and parents keep track of the health and behavior of primary school students during the anti-epidemic period. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Joe dressed up as a mother of five
Qiao Lianlian had transmigrated and became the stepmother of her five children. Under the original plot setting, these children all grew up to be villains because of the original owner's bad treatment. The original owner's family was poor. Her parents married the third son of the Gu family for two taels of silver. On the night of their wedding, her husband was captured and banished to the army. Her in-laws believed that she was a jinx and chased her and her five children out of the house. After Joe passed through them repeatedly, he began to use gentleness, kindness, and patience to correct the children, making them gradually become healthy from their bean sprout state. Later, when the children's father came back, she realized that four of the five children had amazing backgrounds. The identity of the children's father was not simple either.
What story did the dragons tell about love?
The love story in Dragon Clan was complicated and full of regrets. Between Lu Mingfei and Chen Motong (Nuo Nuo), Lu Mingfei had always had a crush on Nuo Nuo. Nuo Nuo had a special place in Lu Mingfei's life and was an important existence in his heart. The relationship between Lu Mingfei and Uesugi Erii was heart-wrenching. Eri was the purest heir of the White King's bloodline. She had a respected status but was lonely in her heart. Lu Mingfei had become a ray of light in her short life. Erii liked Lu Mingfei and was willing to share everything with him. However, Lu Mingfei was initially afraid of Erii, but later on, he sympathized with her. The feelings between them were more of a resonance than love. Lu Mingfei's hesitation made him unable to use a quarter of his life to save Erii. The tragic ending of Erii left many readers unsettled. In addition, in the background story of "Dragon", there were love tragedies like Belisker and Mejelia. Belisk and Mejelia were dragon lovers, but they were discriminated against because of their low status. Mejelia was executed for protecting humans and violating the rules of the dragon race, and Belisk died tragically in front of his lover's fantasies.
What is the name of the female protagonist of the Tang Dynasty novel, Princess Jin Yang?
Jinyang Princess milk name Si son, the word Mingda, young word Si son. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>