The nuclear pores in the nuclear membrane allow proteins and RNA to move in and out freely is true

No, it can be said that there is no place in the body of a living organism that can be freely entered and exited.

The nuclear pore is not a completely permeable hole, but a nuclear pore complex composed of a variety of proteins, through which macromolecules are actively transported and are strictly selected.

It allows RNA to move in and out freely, but protein molecules are too large to move in and out freely. I think this statement is wrong.

Entering the nucleus through the nuclear pore: After the protein is synthesized on the ribosome, it can be macroscopic to enter the nucleus. The components that form chromosomes. or a catalytic enzyme.

The RNA of each species is transcribed from the nucleus and then enters the cytoplasm through the nuclear pore.

Neither DNA moves in the nucleus nor in the cytoplasm.

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Summary. Wait a minute.

Proteins, RNA in and out of the nucleus play a role independent of the nuclear pore complex.

Wait a minute. The role of the fine circular excitation nucleus is independent of the nuclear pore complexAnalysis: the nuclear membrane is a double-layer membrane, composed of four layers of phospholipid molecules, and a is wrong; There is no nucleus in mature red blood cells in the human body, b error; According to the inscription, the nuclear pore is synthesized by genetic control.

Ions can permeabilize the nuclear membrane, as can smaller molecules such as amino acids, sugars, protamine, histones, RNA enzymes, and DNA enzymes.

Macromolecules, such as globulins and albumins, enter and exit the nucleus through nuclear pores. Messenger RNA may enter the cytoplasm through nuclear pores. Large particles containing RNA can enter the cytoplasm from the nucleus through the nuclear pores.

Nuclear pores allow proteins and RNA to enter and exit, but not freely, but by active selection.

The statement that the nuclear pore is the only way for matter to enter and exit the nucleus is false.

Supplement: The nuclear membrane pore is a branch hole in the boundary membrane between the nucleus and the cytoplasm, but the nuclear membrane is not connected, and there are many small pores, which is called nuclear pore. It is the conduit for most of the exchange of substances between the nucleus and the cytoplasm, such as messenger RNA may enter the cytoplasm through the nuclear pore.

The number of nuclear pores also varies according to the cell type and metabolic status, and the number of nuclear pores is low in cells with low transcriptional activity or no transcription.

There are various names such as nuclear membrane pores, pores (pore), or annulus. It is a special structure located on the nuclear membrane of eukaryotes with a diameter of 70-150 nm. In the center of the nuclear pore there is a particle with a high electron density, surrounded by a film with a low electron density, and around the film there are eight particles with a high electron density.

The density of the nuclear pores on the surface of the nuclear membrane, as well as the inner and outer diameters of the nuclear pores, can vary depending on the type of organism and the stage of the cell. In general, the density of nuclear pores is related to the activity of the nucleus, and the higher the synthetic activity of the nucleus, the greater the density of the nuclear pores.

Originally, biologists named the nuclear pore as a fine pore, but in fact it is not a simple pore that is always open, but selectively transmits material. For example, a white matter molecule that is only 10 nm in diameter cannot enter the nucleus from the cytoplasm. In addition, it has been observed that large particles containing RNA can enter the cytoplasm from the nuclear pore through the nuclear pore.