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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 do proteins leave the cell?
Proteins leave the cell through a process called exocytosis, where they are packaged into vesicles and transported to the cell membrane. The vesicle then fuses with the cell membrane, releasing the proteins outside of the cell.
Channel in the nuclear membrane through which RNA passes?
The nuclear membrane contains nuclear pores through which RNA passes in and out of the nucleus. These nuclear pores are complex structures made up of proteins that regulate the movement of molecules like RNA between the nucleus and the cytoplasm.
How does the MRNA get out of the nucleus?
mRNA is transported out of the nucleus through nuclear pores in a process called nuclear export. Specific proteins recognize and bind to the mRNA molecules, facilitate their transport through the nuclear pores, and into the cytoplasm where they can be translated into proteins.
What makes proteins that are transported through the endoplasmic rericulum?
Proteins that are transported through the endoplasmic reticulum contain a signal peptide sequence that targets them to the ER. Once synthesized by ribosomes, these proteins are recognized by the signal recognition particle (SRP) which guides them to the ER for processing and eventual insertion into the ER membrane or lumen.
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 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.
How do proteins leave the cell?
Proteins leave the cell through a process called exocytosis, where they are packaged into vesicles and transported to the cell membrane. The vesicle then fuses with the cell membrane, releasing the proteins outside of the cell.
Is it true or false that ribosomes are permeable to the nuclear membrane?
False. Ribosomes are not permeable to the nuclear membrane. They are synthesized in the nucleolus of the nucleus and then transported out through nuclear pores to the cytoplasm where they function in protein synthesis.
Materials and proteins are transported through the cells by the what?
Materials and proteins are transported through the cells by the process of vesicular transport, which involves the movement of vesicles within the cell. This can include processes like endocytosis, exocytosis, and vesicle trafficking between organelles. Additionally, proteins may be transported across the cell membrane by specific transporter proteins or through channels.
How are proteins trasported from the nuclear membrane to other parts of the cell?
the proteins travel through the cell by the endoplasmic reticulum(ER).
Why are proteins and polysaccharides cannot be transported across a cell membrane by carrier proteins?
They are too large to be transformed by carrier proteins. They are moved across by Vesicles instead.
What can you infer about large molecular-weight proteins that cannot be transported into the nucleus?
Large molecular-weight proteins that cannot be transported into the nucleus likely do not contain a nuclear localization signal (NLS) that is recognized by importins. These proteins may function primarily in the cytoplasm or at the cell membrane, where they carry out their specific roles without the need to access the nucleus.
Channel in the nuclear membrane through which RNA passes?
The nuclear membrane contains nuclear pores through which RNA passes in and out of the nucleus. These nuclear pores are complex structures made up of proteins that regulate the movement of molecules like RNA between the nucleus and the cytoplasm.
How does the MRNA get out of the nucleus?
mRNA is transported out of the nucleus through nuclear pores in a process called nuclear export. Specific proteins recognize and bind to the mRNA molecules, facilitate their transport through the nuclear pores, and into the cytoplasm where they can be translated into proteins.
The nuclear membrane is allowing materials to pass through?
A cell controls what moves through the membrane by means of membrane proteins embedded in the phospholipid bilayer.The things that can easily move in and out of the cell through the membrane are gases, like oxygen and carbon dioxide, and water.
What makes proteins that are transported through the endoplasmic rericulum?
Proteins that are transported through the endoplasmic reticulum contain a signal peptide sequence that targets them to the ER. Once synthesized by ribosomes, these proteins are recognized by the signal recognition particle (SRP) which guides them to the ER for processing and eventual insertion into the ER membrane or lumen.
