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How does mRNA enter the nucleus?
mRNA does not enter the nucleus. It is transcribed from DNA inside the nucleus and then exits the nucleus to carry genetic information to the ribosomes in the cytoplasm for protein synthesis.
How do proteins enter the nucleus?
Proteins enter the nucleus through nuclear pores in the nuclear membrane. These pores allow specific proteins to pass through and enter the nucleus where they can perform their functions.
How many electrons in a sodium ion?
None. The electrons are not in the nucleus for any atoms. They swirl around the nucleus in space but do not enter the nucleus. If electrons are squeezed into nuclei of atoms through gravity in supermassive star collapses, they fuse with protons and become neutrons. Sodium has 11 protons and usually 12 neutrons in their nuclei but no electrons.
The nucleus is surrounded by a semipermeable membrane. what would happen if this layer were permeable to most substances?
Large molecules would be able to enter and damage the nucleus.
Do the Materials enter and leave the nucleus through the cromatin?
Materials usually enter through the cell wall.
Materials enter and leave the nucleus through opening in its?
Materials enter and leave the nucleus through openings called nuclear pores. These pores regulate the movement of molecules, such as RNA and proteins, between the nucleus and the cytoplasm. They allow for communication and transportation of essential components for cellular functions.
In action potential the sodium enter to depolarize the stimulated area not whole the nerve why?
Sodium ions can enter the neuron in the stimulated areabecause in this area sodium channels open up, allowing the sodium ions to flow down their concentration gradient. In other parts of the membrane these channels remain closed.
Can sodium still enter a membrane if ATP is not present to activate the sodium potassium pump?
Yes, sodium can still passively diffuse into the cell through leak channels even if the sodium-potassium pump is not active. The sodium-potassium pump primarily works to maintain the concentration gradient of sodium ions by actively transporting them out of the cell, but without ATP, this process would eventually fail.
How do materials enter and leave the nucleus?
Materials enter and leave the nucleus through nuclear pore complexes in the nuclear envelope. Large molecules, such as proteins and RNA, are actively transported into and out of the nucleus through these pores using specific transport proteins. Small molecules, like ions and small proteins, can freely diffuse through the pores.
What chemicals enter and leave the axon at the Nodes of Ranvier?
Sodium and potassium ions enter and leave the axon at the nodes of Ranvier. Sodium ions enter the axon to depolarize the cell, while potassium ions leave the axon to repolarize the cell and reset its resting potential.
Materials enter and leaves the nucleaus through opening in its?
Nucleus Pores
What part of a cell determines what enter a cell?
nucleus and membrane/wall
