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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaBiology concept

This rigid cellulose-rich layer lies outside a plant cell's membrane.

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Your new ahaCell wall

Plant cell walls contain cellulose. Source: Cell wall

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More from Biology Basics

A few more worth knowing.

  1. 17This DNA-and-protein structure packages genetic material in a eukaryotic cell.RECALL
    Chromosome

    Humans normally have 46

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  2. 18This type of nuclear division generally produces two genetically matching daughter nuclei for growth and repair.RECALL
    Mitosis

    Used for growth and repair

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  3. 19This organelle carries out photosynthesis.RECALL
    Chloroplast

    It contains chlorophyll

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