Unit 2 Supporting Vocab

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Cytoskeleton

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A network of protein filaments (microtubules and microfilaments) that gives a cell its shape, helps with movement, and organizes organelles.

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Homeostasis

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The ability of an organism or cell to maintain a stable internal environment despite changes in external conditions.

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Porous

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Describes a material or membrane that has tiny holes (pores) allowing substances like water or gases to pass through.

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Paramecium

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A single-celled, ciliated protist that lives in freshwater and moves using hair-like structures called cilia.

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Amoeba

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A single-celled organism that moves and feeds by extending parts of its body called pseudopodia (a temporary arm-like extension).

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Nuclear Pores

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Openings in the nuclear envelope that allow molecules like RNA and proteins to move in and out of the nucleus.

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Ions

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Atoms or molecules that have gained or lost electrons, giving them a positive or negative charge.

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Valid

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In science, refers to an experiment that accurately measures what it is intended to measure.

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Unbiased

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Free from prejudice or favoritism; results or observations that are fair and objective.

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Inorganic

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Refers to substances not derived from living organisms and typically lacking carbon-hydrogen bonds.