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 process divides the cell nucleus and its contents?

    A:

    Both the processes of mitosis and meiosis divide the cell nucleus and its contents. Mitosis occurs in all cells of the body, whereas meiosis happens only in the sex cells.

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  • 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:

    What is the division of the cell nucleus called?

    A:

    The division of the cell nucleus is called either mitosis or meiosis, depending on which type of division has occurred. Meiosis is a type of cell nucleus division specific to the reproduction of the species.

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  • Q:

    What is a cell that lacks a nucleus?

    A:

    A cell that lacks a nucleus is a prokaryotic cell. Prokaryotes are unicellular organisms that also are lacking other organelles typically found in eukaryotic cells, which do have a nucleus. The structures found in a prokaryotic cell are cell membrane, cell wall, cytoplasm, DNA and ribosomes.

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