One high school biology questions, one to high school biology questions

Yes, you can think of the two processes of photosynthesis as reversible reflections, when there is more water, more h is produced, the dark reflection is faster, and the more it accumulates. And the accumulation of oxygen produced by light reflection is not beneficial to plant growth... So, that's right.

Process: Photolysis of water: 2HO4[H]+O (catalyzed by light and pigments in chloroplasts).

Synthesis of ATP: ADP + PI ATP (catalyzed by pigments in light, enzymes and chloroplasts). Influencing factors:

Light intensity, CO concentration, water supply, temperature, pH, etc.

Moreover, in addition to the basic needs of plants, the role of water is basically transpiration (i.e., a large amount of evaporation). In this process, the inorganic salts are pulled upwards to ensure photosynthesis and other needs of the plant, while cooling the leaves and preventing them from being burned. Water is transpired through the stomata on the leaves, and the stomata are closed at noon to prevent the disappointment of the large flow of water.

Therefore, there is a certain scientific basis for this sentence

Yes, water is one of the raw materials for light reactions.

That's right. The amount of water is one of the important factors affecting photosynthesis. Appropriately increasing the humidity of the greenhouse can promote the formation of reduced hydrogen, thereby promoting the synthesis of organic matter in the dark reaction. So this statement is correct.

Forehead ......This is the stamp method in microbial culture.

It is to make a stamp with a flannel cloth, first touch it lightly in E, and then print it into D medium in the same position, so that you can ensure that each colony can correspond one by one.

Because the insertion of the gene of interest destroys the ampicillin resistance gene inside the plasmid, the correct recombinant plasmid will grow normally in E but not in D.

The individual colonies on C were inoculated in the "same position" of D (ampicillin and tetracycline) and E (tetracycline) mediums, respectively, and the order in which the colonies were inoculated was marked on both dishes. There should be no problem, if there are conditions, it will be clear if you do this experiment yourself.

（1）n--gly--pro--leu--ala--leu--asp--tyr--val--leu--c;

2) hydrolyzed alanine, two amino acids, and leucine condensed to form a peptide bond; tyr and asp;

3) ALA alanine.

Glycine Gly G

Alanine Ala A

Valine valine val v

Leucine Leu L

isoleucine ile i proline pro p

Phenylalanine phe ftyrosine tyr y

tryptophan trp w serine ser s

Threonine Threonine Thr T cystine cys C

Methionine met M asparagine asn n glutamine glutarnine gln q asparticacid asp d

The reorganization type refers to a phenotype that is different from the parent.

If the parents are high rod rust resistance (DDTT) and short rod non-rust resistance (DDTT), then F1 is DDTT, and the four phenotypes and proportions of F2 are high resistance to D t: high resistance to D tt : short resistance to DDT:

Dwarf is not resistant to ddtt=9:3:3:

1, among which the recombinant types are high anti-DDT and short anti-DDT, accounting for 6 16, that is, 3 8

Recombination refers to the recombination of traits. The parents are highly resistant and short (non-resistant). Then the recombinant class after the recombination of traits is high susceptibility and short resistance.

High sensitivity (ddtt 1 16, ddtt 1 8) and low resistance (ddtt 1 16, ddtt 1 8), so the probability of recombination is 1 16 + 1 8 + 1 16 + 1 8 = 3 8

D-tt and DDT-, both are recombination types, and the recombination type refers to a phenotype that is different from the parent.

The recombinant type is different from the type of parent, F1 is DDTT, and the genotype and proportion of F2 are D t :d tt : ddt :

ddtt=9:3:3:

1, in which the recombination types are DTT and DDT, accounting for 6 16, that is, 3 8

f1 ddtt self-inbred to get 1ddtt 2ddtt 1ddtt 2ddtt 4ddtt 2ddtt 1ddtt 2ddtt 2ddtt 1ddtt Do you see the ratio of recombination is 3 8?? 1ddtt 1ddtt and 4ddtt 6 16 is 3 8 Maybe you misunderstood the question.

aa is 16%, according to the law of genetic equilibrium, knowing that the gene frequency of a is , then the gene frequency of a is . It is known according to the law of genetic equilibrium.

Therefore aa=, aa=, aa=

1.Wrong. The first half of the sentence is correct. The second half of the sentence is wrong, there are two positions of ribosomes, one is attached to the endoplasmic reticulum, and the other is free in the cytoplasm, which is called paramembranous ribosomes or attached ribosomes. Therefore, there is no attachment to the nuclear membrane, which is wrong.

2.Right. Because in different cells, there is only one nucleus.

3.The fluid in the vacuoles of plants is called cell sap (cellsap)4Wrong.

The nuclear pore is not a pore that is always simply open, but selectively transmits the material. For example, a protein molecule with a diameter of only 10 nanometers cannot enter the nucleus from the cytoplasm. In addition, the nuclear pore is not completely impenetrable to large particles, and it has been observed that large particles containing RNA can enter the cytoplasm through the nuclear pore from the nucleus.

In addition, the DNA of the virus can also enter and exit the cytoplasm and nucleus through the nuclear pores.

The inscription says: Arbitrarily passed, wrong.

So the correct option is 2

The first one is right.

The outer membrane of the nuclear membrane is attached to the endoplasmic reticulum and there are many ribosomes attached to it.

The shape, size, and number of nucleoli vary from cell to cell. (related to the vigorous protein synthesis).

The fluid inside the nucleus is called nuclear fluid, and the fluid in the vacuole is called cell fluid.

Nuclear pores allow the passage of certain polymers, such as proteins, but not all substances can pass freely.

The outer membrane of the A membrane is connected to the endoplasmic reticulum and there are many ribosomes attached to it, while B is different in different cells, and the shape, size, and number of nucleoli are different. The fluid in the nucleus is called nuclear fluid, the liquid in the vacuole is called the cell fluid, and the nucleus pore allows certain polymer substances (such as proteins) to pass through, but not all substances can pass freely.

No, ribosomes are mainly distributed in the endoplasmic mesh, and the others are mainly in a free state.

Wrong, in different cells, the shape, size, and number of nucleoli are different. (related to the vigorous protein synthesis).

Yes, the fluid in the nucleus is called nuclear fluid, and the fluid in the vacuole is called cell fluid.

False, the nuclear pore allows certain polymer substances (such as proteins) to pass through, but not all substances can pass freely.