Q:

Who discovered the cell nucleus?

A:

Quick Answer

Robert Brown discovered and named the cell nucleus in the 19th century. The discovery was made when he was trying to determine why pollen grains moved inconsistently in the water.

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Full Answer

The erratic movement of pollen grains was named Brownian motion after Brown's discovery. Brown was a well-respected botanist, and he became the president of the Linnean Society, the world's oldest biological society, in 1849. He made countless and significant contributions to botany field, including collecting and classifying thousands of botanical specimens during an expedition to Australia in 1801. The discoveries Brown made using a microscope are still beneficial in today's research.

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Related Questions

  • Q:

    What controls the activities of a cell?

    A:

    The cell nucleus is the command center and thus controls the activities of the eukaryotic cell. A double-walled cell nuclear envelope separates the nucleus from the cytoplasm and controls its shape while allowing chemical compounds to pass to and from the nucleus to control other activities in the cell. The nucleus contains the chromosomes, consisting of DNA, that regulate cell growth and reproduction.

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  • Q:

    How are proteins produced in a cell?

    A:

    Proteins are produced by stringing amino acids together in the order specified by messenger RNA strands that were transcribed from DNA in the cell nucleus. The process of synthesizing a protein is called translation, and it occurs on ribosomes in the cytoplasm of a cell.

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  • Q:

    What are the parts of a cell nucleus?

    A:

    The parts of the cell nucleus are the nuclear envelope, the nucleoplasm, the chromatin and chromosomes and the nucleolus. The nucleus is likened to the "brain" of a cell; its activities control the actions of a cell.

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  • Q:

    What is a cell without a nucleus called?

    A:

    A cell without a nucleus is classified as a prokaryotic cell. The genetic material of prokaryotic cells is free inside the cytoplasm. Prokaryotic cells do not have a need for compartmentalization, unlike more complex cells.

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