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Anonymous users2024-02-10Buy a small brochure to go to it is very useful.
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Anonymous users2024-02-09Buy a copy of the Biology Century Gold List.
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Anonymous users2024-02-08Is it possible to store it on a computer? Leave your emaii if needed
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Anonymous users2024-02-07There are a lot of them in the library, and you can find them if you look for them.
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Anonymous users2024-02-06Each break, that book has more content, in other words, it's a classic, it's easy to click, and it's just a matter of taking it.
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Anonymous users2024-02-05What is your English, I feel that every chapter in biology has to be memorized like words in English, memorized over and over again...Memory and comprehension go hand in hand, remember and understand, and remember....If you believe me, I'll try it, and if you don't believe that the best method is just a method!
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Anonymous users2024-02-04On the basis of classroom learning, you can search for some relevant courseware on the Internet, preferably with dynamic diagrams to deepen understanding. For example, if you have difficulty understanding the knowledge points of protein, you can look up high school courseware on protein, and some courseware is intuitive and easy to understand. The college entrance examination is coming soon, and if you really have problems with self-study, extract the knowledge points that are difficult to understand or do not understand, find a tutor to solve it, or look up and ask specific questions on the Internet.
High school biology is mainly because some of the content is just beginning to come into contact with and is not easy to understand, so it is easy for you to understand by giving two more examples when you ask someone to explain it for you.
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Anonymous users2024-02-03The basic concept is the foundation, grasp the relationship between the concepts, draw the concept map of each module, and then take each concept as the center to find its structure, characteristics, types, functions and applications in real life and production, especially the application, the college entrance examination is the practical application ability. When you finish this module, the knowledge will be systematic and the organization will be clear.
Give it a try and may you get excellent results in the college entrance examination.
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Anonymous users2024-02-02If you remember it, you can use it alive.
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Anonymous users2024-02-011.In hybrid offspring, the phenomenon of both dominant traits and recessive traits that occur simultaneously is called ---shape separation.
2.Crossing assays, i.e., allowing f1 to cross with --recessive homozygous --.
3.The basic steps of artificial cross-pollination: flower fiber budding stage--emasculation--; bagging artificially pollinated wide mountains; bagging
4.The law of free combination: the separation and combination of genetic factors that control different traits are - do not interfere with each other; In the formation of gametes, it is a coincidence that pairs of genetic factors that determine the same trait - separate from each other - and genetic factors that determine different traits - freely combined ---
5.Alleles are genes that control --- relative traits, such as ---d and d---6Genotype: refers to the phenotype-related - genetic makeup--。
Biology Compulsory II).
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Anonymous users2024-01-31Eukaryotic cells make up eukaryotic organisms, including fungi, animals, plants.
Proeukaryotic cells constitute prokaryotes, including bacteria (all those with the words rod, rod, arc, and spiral are bacteria, including the often said lactobacillus, Staphylococcus aureus, etc.), actinomycetes, and cyanobacteria (hair cabbage, trembling algae).
There are eight types of organelles, mitochondria, chloroplasts, endoplasmic reticulum, Golgi apparatus, lysosomes, ribosomes, centrosomes, vacuoles. Double-membrane: mitochondria, chloroplasts.
Monomembranes: endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles. Membrane-free:
Ribosomes, centrosomes.
It is recommended that you buy a reference book, that knowledge point is summarized directly, and it is more convenient for you to look at it. Biological knowledge points are trivial and cannot be improvised. Pay attention to the usual accumulation.
As shown in the figure, the female parents should be two heterozygous, so the ratio of AA to AA is 1:2, the male is AA, the probability of the child of these two people suffering from the disease controlled by A is 1 6, and H is inherited with sex, and the probability of disease is 1 2, so the probability of not suffering from both diseases is the product of the probability of not suffering from both diseases.
Item A: Organisms have evolved over a long period of time to form today's characteristics, and in long-term evolution, through the survival of the fittest, most of the features that have been retained are adapted to the surrounding environment. If a gene mutation occurs, it will change the characteristics that are suitable for the environment and become unsuitable for the environment, so it is said that gene mutations have more harm than benefit. >>>More
Dizzy, buy a reference book.
First, the dominant recessive nature of albinism and sickle anemia was determined, and according to the left half of Figure 1, it can be concluded that anemia is a recessive genetic disease, which is bb; Then look at Figure 2, because if it is normal, it can be cut, and if it is not normal, it can't, so B is normal, C is albino, and both are homozygous, only A is heterozygous (because A can cut out three pieces: DNA is a double helix structure, only one of A can be cut, B can be cut all of them, cut into two short and two long, C is not cut) Because albinism is a recessive genetic disease, it is AA, so it can be known that B is AA and C is AA >>>More
The idea of option d is the same as that of the experiment done by Saxophone in the book, if the whole leaf should be blue according to the operation method of the option, the first thing to do in this kind of experiment is to starve and consume the accumulated starch in the experiment. >>>More