Chemistry and Biology in the third year of high school, and Biophysical Chemistry in the third year

The first question is that human muscle twitches are caused by a lack of calcium ions in the body, and sickle anemia is a genetic disease.

I haven't heard of the second question.

Third, the concept of receptor is a protein that can deliberately bind to the corresponding ligand, and then cause biological effects by mediating cell signaling. Proteins don't have to be glycoproteins.

There must be all in the 45678 question book, and there is definitely the original word.

9 mixtures. 10. The former has no phenomenon, and the latter produces white precipitation.

11. The premise is that the acid and alkali to be added are dilute solutions to avoid dissolving heat.

12 The product of the two concentrations is 10 to the minus 14th power. But the amount of each type is not constant, one is more, and the other is less.

13 There are only two metals that need to be heated to react with concentrated nitric acid: iron and aluminum. Because passivation occurs at room temperature.

14 There is a sufficient amount of copper in the stem, so nitric acid will always become thin.

15 dizzy....It should be 1 to 3 ......

I'm tired of answering questions on my mobile phone!

This children's shoe foundation is too poor. It is recommended to read more books and read them repeatedly. The Rationale can give you at least 50 points. Otherwise, no matter how many questions you do, you won't be able to do it. If you can't, you can ask me.

There are a lot of problems, and your definition is very vague as far as living things are concerned, such as the definition of the internal environment...

Chemistry, look at the book, pay attention to page by page, it's very effective, the answer is in the book, you can find it yourself.

To be kind, so many questions are very, and every question can be discussed...

Read the book, it's all in the book.

Summary. Send the original question to the teacher.

Senior 3 Biophysical Chemistry.

Send the original question to the teacher.

The answer to this question.

Agrobacterium transformation method.

There are two types of DNA, ECOR 1 and BAMH1, and the plasmid contains this enzyme cleavage site on the DNA where the target gene is located, and does not destroy the marker gene.

Direct import method.

Calcium chloride treatment.

Ampicillin.

Primer amplification validation.

1. The leaves are already highly differentiated; b. Plant cells lose too much water in a high-salt solution and will not recover; d. Mature mammalian locust contains fine melocytes without nucleus; C leaf green is also soluble in ethanol.

2, b germinated wheat seeds have more soluble sugar and starch, and starch is colloidal, lead and laugh can not pass the translucent bag, soluble sugar with Filin reagent test.

The selection of a set traits has a and a control.

The frequency of the dominant trait is that the phenotype of the recessive trait is AA=

So a for, a for.

aa is , and a is correct.

A is, a is, b is wrong.

Gene frequency changes do not necessarily form new species, new species must have reproductive isolation, c error.

d a is, a is, aa is a key friend. Individuals (aa and aa) for traits controlled by a are false, d.

The answer is: a.

In this population, aa+aa=, then aa=, launch a=, a=, then the genotype frequency of heterozygous aa after one generation of breeding in this population is: 2*.

b is false, the gene frequency of the dominant gene should be less than the gene frequency of the recessive gene.

c False, if the frequency of Zhen Yuanzheng's gene in the gene pool of the population changes, it means that the organism will definitely evolve, but it will not necessarily form a new species of cavity file.

d is false, if the frequency of gene a in the population is, the individuals with the trait controlled by a account for 64% of the population.

c Hemophilia is a kind of X-chromosome crypto-burning void destruction hereditary disease, giving birth to a son, then the X chromosome of the skin son comes from this patient, ** only the hematopoietic cells are modified, not the germ cells, so the offspring are all diseased.

1.Wrong. It should be water and carbon dioxide. "Ultimately" is the title.

2.Wrong. It is the way in which macromolecules enter and exit the fine old excitators.

3.Wrong. The basic units are deoxyribonucleotides and ribonucleotides. Moreover, it is DNA that determines inheritance, and cytoplasmic RNA generally determines the performance of traits.

4.Wrong. Protease hydrolyzed protein OK? It can not be said that hydrolyzed peptide bonds.

5.Wrong. On the thylakoid membrane.

6.Wrong. Senescence.

Dead cells can be lysed by the lysosomes of the diososomes themselves, by the lysosomes of other cells, or by phagocytes (e.g., red blood cells). Cancer cells can be eliminated by phagocytes, but not all, because cancer cells multiply very quickly.

The answer is right. Book Front.

Let me explain to you the meaning of the dust collapse of these four points.

The auxin concentration at point A is a low concentration to promote growth;

The auxin concentration at point B is low to promote growth;

The auxin concentration at point C was high concentration to inhibit growth; (III IV interval) the auxin concentration at point D was a high concentration to promote growth; Its promoting effect is stronger than that of point B. (interval i iii).

You will definitely ask this question, why are they all high concentrations, some promote and some inhibit?

If you look at the graph of auxin action in the textbook, the concentration of the effect on the root and the stem, you will understand.

If the gene frequency of a is about 30%, then the frequency of the gene a is about 70%, and the probability of a a is 2* and about 20% given in the title, so it is wrong.

The death of an individual does not cause a change in the gene pool, but malaria is a death ...... in batchesThe gene pool will of course change.