Little knowledge of biological fat
Fat was a type of fat that was composed of glucose and fatty acid. The elemental composition was mainly C, H, and O. In humans and animals, fat is mainly distributed in the fatty tissue. For example, the fatty tissue under the skin can keep warm, protect internal organs, reduce friction between organs, and buffer external pressure. The fat in animals is also an important energy storage material. The energy released by the decomposition of 1g fat (39KJ) is much higher than the energy released by the decomposition of 1g glygen (16.7KJ). Among plants, the seeds and fruits of some plants had a higher fat content. Fatty acid could be divided into saturated fatty acid and saturated fatty acid, while the latter could be divided into monounsaturated fatty acid and poly-saturated fatty acid. Animal fats contained more saturated fatty acid and were solid at room temperature, while vegetable oil contained more saturated fatty acid and was liquid at room temperature. The saturated fatty acid was heat-resistant, stable, and suitable for frying, but excessive intake might increase the risk of cardiovascular disease; the poly-saturated fatty acid was unstable and heat-resistant, suitable for frying; the monounsaturated fatty acid was heat-resistant, stable, and had little oil smoke, suitable for a variety of cooking methods. Fat metabolism was an important and complex biochemical reaction in the body. It involved the digestion, absorption, synthesis, and decomposition of fat. Digestion was mainly carried out in the upper part of the small intestine. Fat can also assist in the absorption of fat-dissolved vitamins and participate in various aspects of the body's metabolism. From a nutritional point of view, some fatty acid was very important for brain development, steroid production, immune system, and reproductive system. However, some fatty acid could not be synthesized by the human body itself and needed to be taken from the diet. In addition, the fat in the body has different distribution. The fat under the skin (including brown fat) is relatively beneficial, while the fat distributed in the internal organs or in the blood that exceeds the normal standard may be detrimental to health. However, fat itself is necessary for health, and low fat content is also detrimental to health. Read more exciting novels for free
Knowledge Atlas of the Biological Brain
The structure of the brain was more complicated. The following were the structures and functions of its main parts: - " frontal lobe: An important area in the brain's hemisphere structure. It is mainly responsible for casual movements, such as simple movements such as holding a cup and drinking water. It also involves advanced cognitive functions such as information processing, logical thinking, emotional management, emotional expression, intelligence, and so on. It also had the ability to smell and speak. If the frontal lobe was damaged or pathologically damaged, it might cause the body to convulse uncontrollably, hallucinate, have a loss of memory, slow reaction, lack of concentration, and even change in personality, such as mild people becoming irritable. - The frontal lobe is located between the frontal lobe, occipital lobe, and temporal lobe. It is the main sensory region of the brain. The central back gyrus of the sensory area was responsible for superficial skin sensation and deep muscle and joint sensation, while the superior lobus was the cerebral center of touch and solid sensation, which could recognize familiar objects by touch. The brain's conscious senses depend on the sensory center of the cerebral hemisphere. Damage to the postcentral gyrus would result in sensory disturbance on the opposite side of the focus, and damage to the superior superior lobular lobe would result in sensory disturbance. In addition, part of the frontal lobe was the motor center, which was related to complex movements and labor skills. Another part was the reading center, which was used to understand the words and symbols. - ** Temporal lobe **: The reference material did not mention it, so it is impossible to answer accurately. - ** Occipital lobe **: The reference material did not mention it, so it is impossible to answer accurately. The brain can also be divided into the brain above the tentacle and the brain stem below the tentacle. There are also two cerebral hemisphere, the left and the right. The brain stem, the retina, and the cerebrum. All vertebrae had a brain stem, which contained structures related to basic life processes, such as breathing, pulse, arousal, movement, balance, and simple processing of sensory information. The oblongata was the center for the regulation of breathing, blood pressure, and heartbeat. The pontine brain was close to the oblongata and provided input fibers to other brainstem structures and the cerebrum. The reticular structure could wake up the cerebral hemisphere to pay attention to new stimulation. Large area damage could lead to coma. Its long fiber bundle could transmit the incoming sensory information to the cerebral hemisphere through the retina for further processing. The cerebrum was connected to the brainstem and located at the base of the skull. It coordinated body movements, controlled posture, and maintained balance. The limbic system was related to motivation, emotional state, and memory processes. It was also involved in the regulation of body temperature, blood pressure, and blood sugar levels. It was composed of the hippocampi, the almond nucleus, and the hypohedron. It only appeared in the brains of mammals. In addition, an international team of scientists produced the first map of every nerve cell and connection in the adult fruit fly brain, which helps to understand how the brain produces complex thoughts. It revealed 139,255 neurons in the fruit fly brain and as many as 50 million connections between them. Although the number of neurons in the human brain was about one million times that of the fruit fly, this result brought humans closer to understanding their own brains. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Biological knowledge, about 800 words
Biological Glycogen Knowledge Points
Glycogen (C H O)n, also known as animal starch, was a branched-chain glycan condensed from many glucose. It was a storage form of glucose in humans and animals. I. Glycogen synthesis (Glycogen Formation) 1. During the resting period after the liver completes the Colli cycle, the process of glycogen production is initiated; this process can also be initiated by hormone, such as after a sugar-rich meal, which is secreted in response to the increased blood sugar level. 2. The general process of synthesizing glycogen from glucose was as follows: glucose → glucose 6 -monophosphate → glucose 1 -monophosphate → eudPG → glycogen. II. Glycogen distribution It was mainly distributed in the liver (liver glycongen) and skeletal muscle (muscle glycongen) of animals. Glycongen was also found in some lower plants, fungi, yeasts, and bacteria. Among them, the human liver stores about 100g of glycogen (accounting for 6% - 8% of the liver weight) to maintain the stability of human blood sugar, and about 400g in skeletal muscle (accounting for about 1% - 2% of skeletal muscle weight). The molecular structure of glycogen 1. D-glucose, which was linked by alpha- 1,4 and alpha- 1,6 glycosidic bonds, could be completely digested into D-glucose with a molecular weight of 1 million to 10 million. It was a highly branched and uneven molecular. 2. The straight chain was mainly bound by alpha-1,4 giycosidic bonds, while the branched chain was bound by alpha-1,6 giycosidic bonds. Each branch contained 12 - 8 sugar residue. There was a branch every three sugar units on the main chain, and there were branches on the branches every three sugar units. The outermost branch contained about 6 - 7 sugar units. Glycogen had only one reducing end, but there were many non-reducing ends. Glycogen synthesis and digestion started from the non-reducing end. The Nature of Glycogen 1. Glycogen was a white powder with a density of 1.629g/cm 3. It was not dissolved in alcohol, but it was dissolved in hot water and reacted with iodine-producing a brownish-red color. 2. Its chemical composition is very similar to starch. Function of Glycogen 1. The main function of hepatic glycogen - It provides glucose to maintain blood sugar levels during exercise. When muscles extract glucose from the blood for the production of Ang-3, if other sources of glucose cannot be used immediately, the blood sugar level will drop. The decomposition of liver glycogen can prevent the low blood sugar caused by exercise. 2. Muscle Glycogen's Main Function - It provides glucose for the glycolysis in the muscles during exercise. The glucose produced by its decomposition remains in the muscles and provides fuel for the production of adenosinetrimonate. 3. Glycogen can also be used as an energy source for metabolism. The human body's intake of glycogen can improve the heart and blood circulation ability, and protect the liver. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the ways to summarize biological knowledge?
There were several ways to summarize biological knowledge: 1. ** Simple memorization method **: By analyzing the teaching materials to find the main points, the knowledge is simplified into a few regular words to assist in memorization. 2. ** Association Memory Method **: According to the content of the teaching materials, cleverly use association to help memory. 3. ** Comparatively memorizing method **: Use the comparison method to memorize similar terms in biology that are easy to confuse and difficult to remember. 4. ** Syllabus Mnemonic Method **: The core or keywords of the complex and important content in biology are extracted and used as a knowledge outline. 5. [Diffraction Memory Method: Focus on an important point of knowledge, spread out your thoughts, and try to establish as many connections with other knowledge as possible.] 6. ** Sorting method **: For chapters with a large number of concepts or structures, classify them according to different standards. For example, when reviewing the cell organelle, you can classify them according to the existence of membrane structure, the existence of nuclear acid, and so on. When reviewing the genetic law, you can classify the concepts according to traits and mating. 7. [Diagram Induction Method]: This method is suitable for mastering principles and laws. You must first identify the structure and material names in the diagrams, then analyze the internal relationship between them. At the same time, you must organize and classify the diagrams. 8. [Association Transfer Method]: This method can be used to grasp the seemingly isolated knowledge points that have similarities in the teaching materials. It can also be used to solve problems. 9. ** Comparatively reviewing method **: During the revision, you will compare the knowledge horizontally and vertically, such as comparing viruses and protocaryotes, the source and route of the three major nutrients, and so on. 10. ** Linking review method **: Linking the knowledge points scattered in various chapters to fully understand the knowledge, such as linking the knowledge points related to protein from different chapters. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Steps to identify fat in biological tissues
Fat identification could be divided into the following steps: first, take materials, choose a peanut that has been soaked and peeled as the experimental material, cut several thin slices on the cross section of the peanut with a knife, and put them in a clear water petri dish for later use; then slice, take a slice from the petri dish and put it in the center of the glass slide; then dye, drop 2 - 3 drops of Sultan 3 dye solution for three minutes; Three minutes later, the floating color was washed away, and the Su Dan dye solution was absorbed with blotting paper and dripped with 50% alcohol solution. Then, the alcohol solution on the peanut slices was absorbed with blotting paper. Then, a drop of distilled water was dripped and covered with a cover glass to make a temporary specimen. Finally, the thinnest part of the peanut was found with a low-power microscope, and moved to the center of the field of vision. After adjusting the image clearly, the high-power microscope was used to observe. The orange part was the fat particles. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How does animal fat metabolism regulate the energy supply of biological fat?
The regulation of animal fat metabolism on the energy supply of biological fat was more complicated and involved many aspects. First of all, from the perspective of overall metabolism integration and regulation, the body had a priority in fuel utilization. Generally, sugar and fat were the main sources of energy and the consumption of protein was reduced as much as possible. When the decomposition of fat is enhanced, for example, in the state of starvation, fat mobilization increases, the production of ATPincreases, and the ratio of ATP-AAD increases. This will allosteric suppress the activity of Phospho-FructoMaster- 1 and slow down the decomposition of glucose. At the same time, it will activate FructoMaster- 1, promote glyconesis-induced, and increase the synthesis of glycogen. On the contrary, if the decomposition of glucose increases, it will increase the amount of ATPs, which can suppress the activity of the isocitrate dehydrogenases and lead to the accumulation of the citrates. The latter will pass through the mitochondria and activate the actyl-CoA carbolase, which will promote the synthesis of fatty acid and suppress its decomposition. Secondly, during short-term starvation (1 - 3 days without eating), the sugar metabolism will decrease and the fat mobilization will increase. Within 18 hours, the liver gly-gen will be exhausted, the blood sugar will tend to decrease, and the blood will increase in the amount of gly-erol and fatty acid. The body will rely more on fat for energy. During long-term starvation, the body would focus on preserving protein. The tissues in the body, including the brain tissue, would use fatty acid and keton body as the main energy source, and the breakdown of protein would be significantly reduced. In addition, hormones also played a key role in the regulation of fat metabolism and fat energy supply. For example, hormone sensitive lipases could catalyze the ester bond to initiate the mobilization process of fat, but the document did not mention which hormones played a role in animal fat metabolism regulation of biological fat energy supply. In addition, the cells of different tissues and organs formed specific zymograms (different types and contents of the zymograms), which also affected the energy supply of fat. For example, there are many steps involved in the beta-oxidization process of long-chain fatty acid, including the activation of fatty acid, the dehydration of esteryl-CoA in mitochondria, water addition, re-dehydration, thiolation, etc. Each beta-oxidization can produce 1 mole of each of the three reagents, namely, acetoxy-CoA, FADH <2>, and NOD + H <2>. Finally, esteryl-CoA is completely decomposed into acetoxy-CoA, which enters the tricarlic acid cycle to further decompose and produce energy. This process is regulated by relevant membranes and thus affects fat energy supply. In addition, there were acetoxy-coax-coax and thiolase in the extrahepatic tissues, which could decompose the ketone body (condensed from the condensation of actyl-CoA in the mitochondria of the liver cells) into actyl-CoA, and then enter the tricacid cycle to be completely oxided. In this process, the regulation of the decomposition of the ketone body by the protein affected the energy supply of fat. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The biological knowledge mentioned by Qianshu Lian in Nexus Ultraman 26
In episode 26 of " Nexus Ultraman ", Chiki Rei mentioned some biological knowledge when communicating with monsters as follows: Ultraman: Ultraman is a superhuman warrior, usually transformed from an Otto warrior. Ultraman had powerful combat ability and a special body structure that could shoot energy beams and use special weapons and skills to fight. 2 Monsters: Monsters are fictional creatures that usually come from different planets or universes. Monsters have great strength, speed, defense, and special abilities that can be used to fight and threaten human safety. Superpowers: Ultraman and monsters both have superpowers that can be used in different ways. For example, Ultraman could shoot energy beams, use special weapons and skills to fight, while monsters could use strength, speed, agility, and defense to attack. Cosmic creatures: Ultraman and monsters usually come from the universe and are the collection of various creatures in the universe. For example, Ultraman came from Earth and was an Otto warrior, while Monster came from other planets or universes and was a general term for all kinds of creatures. Planet Creatures: Ultraman and monsters living in the universe are usually a collection of various creatures on Earth. For example, Ultraman's mother was a human on Earth while Monster's mother was a creature from another planet. The above is the biological knowledge mentioned by Qianshu Lian in the 26th episode of Nexius Ultraman. I hope it can help.
Where to check the biological professional knowledge question bank
Some of the possible ways to search for the real question bank of biology professional knowledge included: the relevant Star Talent Network, which might provide information such as the real questions and answers for the teacher qualification examination of Junior High School Biology. It could also be searched through a search engine, but it might need to filter out authoritative and reliable sources. In addition, the websites of educational examination institutions sometimes provided resources related to biological professional knowledge. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Little Crow Knowledge
Crows were common birds. Here are some tips about crows: - ** Type **: - Large-mouthed crows were more common in Beijing. They were 57 centimeters long, had thick heads and beaks, and their foreheads were at right angles to the base of their beaks. Their cries were thick wa, wa, and they would peck at frozen animal carcasses in winter. They would also rely on flocks to chase away large birds of prey for food. - The small-beaked crow was 55 centimeters long. Its head was smaller than the former, and its beak was sharp and sharp. It sang more trills and was slightly longer. Although it was smaller in size, it was more ferocious than the large-beaked crow. In addition to searching for animal carcasses, it would also actively attack animals that could be captured. - The bald crow was 47 centimeters long. It looked like a small-beaked crow but was more slender. When it stood, the length of its wings was equal to the length of its tail. There were no nose feathers around the nostrils on its upper beak. The base of its upper beak was grayish-white. It liked to move in the open and often dug up dormant insects on the roots of plants. It was common in farmland and dams outside Beijing in winter. - Red-beaked chvens were 37 centimeters long and black in color. Their beaks and feet were red. Their long beaks were suitable for searching for insects in grasslands and cultivated land. They were distributed in the mountainous environments of Northeast China to Southwest China. They were distributed in the mountainous areas around Beijing and rarely entered the city. - ** Habit **: - Crows were omnivorous birds, such as the white-tailed crows unique to China. Their food included beetles, locusts, lizards, plant fruits, seeds, reed leaves, Diptera larvae, and other insect larvae. They also ate horse manure, corn, and so on. They also foraged in temporary parking lots on desert roads or new residential environments. - White-tailed crows were typical desert birds. Their body feathers were sandy-brown, close to the color of the environment. Their beaks were long and slightly curved for digging and burying food. Their nostrils were covered with dense feathers. Their wings were short and round, and they were not good at flying for long distances. Their tarsal bones were long and strong, and they were good at running in the desert. They also had the behavior of storing food. - ** Cultural Symbol **: - The ancients once believed that crows were divine birds, responsible for the rise and fall of the sun. In ancient times, there were also records of crows feeding back, so crows were regarded as auspicious symbols before the Tang Dynasty. - Since the Song Dynasty, crows had been associated with death and disaster due to their habit of eating carrion and their keen sense of smell, which often surrounded animal carcasses. Black had gradually become a symbol of death. Crows were regarded as ominous birds. - ** Movie related **: - The movie " Crow " was adapted from the comic book of the same name. It was an American fantasy action movie. The main character, Li Guohao, died on the set because a prop gun shot a real bullet. The film tells the story of the rock musician Ai Wei's fiancée who was killed and killed by his own revenge. There are also many sequels and related TV series. The re-release was filmed in the Netherlands in 2022. As of February 2024, the global box office gross was 50,694,671 US dollars. It has also won many nomination and awards. - ** Literature related **: In the novel " Dragon Clan ", there was a character named Ryuji Saebo, who was named " Crow ". He was good at using guns and strategies. At first, he was a gangster, but later he became the director of the Japanese branch of Kassel Academy. "The Crow's Testimony" is equally exciting. Everyone is welcome to read it!
Little knowledge of crows
Crows had many images and meanings in different cultures and works. In terms of movies," Crow " was adapted from the manga of the same name. The movie version's main character, Li Guohao, died unexpectedly on the set. The movie was released in 1994, and three sequels and related TV series were released. The restart was filmed in 2022, telling the story of the revenge of a rock musician and winning a certain box office and award nomination. From a biological point of view, it was a pitch-black bird that mainly fed on insects and generally did not destroy crops. Moreover, crow cubs might encounter accidents and need help. In terms of cultural cognition, it was considered unlucky because of its appearance and cry, but in fact, it was very smart. As shown in " Crow Drinks Water," it also knew how to be grateful and had the allusion of " feeding back kindness." In literary works, such as " Dragon Clan," there was a character named Ryuji Saebo, who was known as a crow. He was good at using guns and was good at strategy. In addition, there were poems describing crows. Although they had a bad reputation, they had the characteristics of predicting disasters and feeding back. In folklore, crows and magpies had stories of interaction, such as going to a rich man's house to congratulate him on behalf of the magpie but being chased away. "The Crow's Testimony" is equally exciting. Everyone is welcome to read it!