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Anonymous users2024-02-16Content from the user: Writhing Youth.
A miss is as good as a mile.
Answer)1Effector T cells are in close contact with target cells, which can reflect the characteristics of membrane structure. (Information exchange function) 2The main site of intracellular metabolism is the mitochondria (cytoplasmic matrix).
3.During transcription, the binding site of RNA polymerase is the start codon. (promoter)4 There are four types of pigments in plant cells. (There are also anthocyanins, etc.).
During replication, DNA polymerase catalyzes the formation of hydrogen bonds. (phosphodiester bond)6Heating decomposes H2O2 because it reduces the activation energy of the reaction. (provides the activation energy of the reaction).
7.The formation of the cell wall of E. coli is associated with the Golgi apparatus. (Prokaryotic cells without Golgi apparatus)8During cellular respiration, chemical energy is converted into heat energy and ATP. (Chemical energy in ATP).
The essential difference with gene A is that A controls dominant traits and A controls recessive traits. (Genetic information is different or deoxynucleotides are arranged in a different order)10There are only three bases for transporting RNA.
RNA is a biological macromolecule that is composed of many ribonucleotides and therefore many bases. It's just that there are three bases that act as anticodons).
11.If the mass fractions on both sides of the semi-permeable membrane are 10% sucrose solution and 10% glucose solution, respectively, and the semi-permeable membrane does not allow these two substances to pass through, the liquid level on both sides is flat. (Due to the large molecular weight, small molecular concentration and low osmotic pressure of sucrose, the water molecules diffuse from one side of the sucrose solution to one side of the glucose solution in a unit time, and the liquid level on the glucose side is high)12 The difference between dominant gene A and recessive gene A is that the genetic code contained in it is different (genetic information)13
Changing yeast culture conditions from aerobic to anaerobic conditions increases glucose 13757290 utilization
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Anonymous users2024-02-15I dismantled the Chang Ji Zheng Zhen knot.
Biology Compulsory 1.
1. The most important thing in the comprehensive is respiration and photosynthesis.
These two processes must be clarified, and.
It's easy to get a combination of the two questions wrong.
For example, the abscissa is the intensity of the light.
The ordinate is the amount of CO2.
The turning point is that the rates are equal.
The decreasing image is that photosynthesis is greater than respiration.
In particular, when calculating the rate of photosynthesis, do not forget the amount of CO2 produced by breathing.
2. It is also easy to make mistakes in the reagents, operations of experiments, and observation of microscopes.
Compulsory 2. 1. The conclusion of Mendel's laws of inheritance should be kept in mind.
Multiple-choice questions often change a little bit.
2. Scientists and related operations and conclusions of transformation experiments such as Pneumococcus must be remembered.
Exams are also prone to some problems here.
3. Genetic questions, one of the most difficult questions in high school biology, comprehend more 4, genetic mutations, chromosomal variations and other concepts of heritable variation.
Compulsory 3. 1. The process of nervous, humoral and immune regulation is often examined, and it is easy to make mistakes.
2. In the development process of plant auxin, the experiments and conclusions made by scientists must be kept in mind, and multiple-choice questions often appear.
3. The concept of ecosystem, community and population, the distribution map of judging the interspecific relationship of organisms, and the analysis of material circulation and energy flow within the biological community are all very important.
It's good to take electives.
There's nothing error-prone.
Look at your question.
I may not be thoughtful about this for the time being, but I will make up for it when I think about it later.
Let's give a point first.
I summarized the biology compulsory 1 1, the most important thing in the theory is respiration and photosynthesis These two processes must be clarified, and it is easy to make mistakes in the combination of the two questions in the answer For example, the abscissa is the light intensity The ordinate is the amount of CO2 The turning point is that the rate of the two is equal The decreasing image is that photosynthesis is greater than respiration In particular, it should be reminded that when calculating the rate of photosynthesis, do not forget the amount of CO2 produced by respiration 2, and it is easier to make mistakes in the reagents and operations of the experiment. Microscopic observation. >>>More
Synthesis of proteins requires certain enzymes, and the composition of ribosomes requires certain structural proteins, so it has proteins; In addition, ribosomal RNA: that is, RRNA, is the most abundant class of RNA, and it is also the largest class of RNA with the largest relative molecular mass among the 3 types of RNA (tRNA, mRNA, RRNA), which combines with proteins to form ribosomes, and its function is to act as a scaffold for mRNA, so that mRNA molecules can be on it, to achieve protein synthesis, for the integrity of the function, he must have RNA.
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
Dizzy, buy a reference book.
There are different classification methods according to their chemical properties, production sites, physiological effects, etc. >>>More