Q:

What does the nuclear membrane do?

A:

Quick Answer

The nuclear membrane, also called the nuclear envelope, surrounds the nucleus in a double layer with multiple pores that regulate the flow of protein and RNA. The pores also allow water, ATP and smaller molecules to flow freely through the membrane.

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Full Answer

The membrane controls the flow of information into the nucleus and DNA because it is all carried by the macromolecules that it regulates. It also separates the material inside the membrane from the rest of the cell. This keeps the DNA safely housed in the center of the cell. Even though the DNA never leaves the nucleus it controls the majority of the processes that happen inside the cell.

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Related Questions

  • Q:

    What does a nuclear envelope do in an animal cell?

    A:

    The nuclear envelope controls the flow of information into and out of the nucleus. It is a porous double membrane that allows the free passage of water, ATP and other small molecules. It regulates the passage of macromolecules, which are much larger, and these are the molecules that carry information.

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  • Q:

    What does the nucleolus do in an animal cell?

    A:

    The nucleolus contains all of the information needed for DNA replication, flow of proteins and RNA, all while controlling the synthesis of protein and cell replication. The nucleolus has several parts: the nuclear envelope, the chromatin and the actual DNA.

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  • Q:

    What is the nuclear membrane made of?

    A:

    The nuclear membrane, which is also called the nuclear envelope, consists of two membrane layers, which are the inner and outer nuclear membranes. Each of these layers is made up of phospholipid bilayers, and the region that separates these two membrane layers is called the perinuclear space.

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  • Q:

    What are the different parts of an animal cell?

    A:

    An animal cell contains a nucleus, cytoplasm that contains the various organelles and a cell membrane, also called a plasma membrane. The nucleus is the largest of the organelles and governs cell activity. It also contains chromosomes, made up of tiny strands of DNA that replicate when the cell divides.

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