All Words
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Cell Theory | A scientific theory that describes the properties of cells, the basic unit of structure in every living thing.
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| Function | The job that a cell, tissue, organ, or organ system does.
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| Structure | The arrangement of a cell, tissue, organ, or organ system, including the shape and the material of which it is made.
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| Cell Membrane | The protective layer that covers the cell’s surface, acts as a barrier, and controls materials going into and out of the cell.
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| Nucleus | A membrane-enclosed organelle found in eukaryotic cells that contains most of the cell's genetic material and controls the activities of the cell.
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| Organelles | Cellular structures that perform specific functions within the eukaryotic cell.
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| Unicellular Organism | A living thing that consists of only one cell.
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| Multicellular Organism | A living thing that consists of more than one cell.
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| Specialization | Each cell in a multicellular organism having a specific job.
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| Tissue | A group of cells that work together to perform a specific job.
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| Organ | A structure that is made of two or more tissues working together to perform a specific function.
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| Organ System | A group of organs that work together to perform a specific function.
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| Organism | Anything that can perform life processes by itself.
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| Cell Division | The process by which a parent cell divides into two or more daughter cells.
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| Differentiation | The process by which their structure and functions become specialized to perform specific jobs.
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| Stem Cells | Undifferentiated cells that can differentiate into specialized calls and can then undergo cell division to form tissues and possibly organs.
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| Selectively-Permeable | The property of the cell membrane that allows some substances to move in and out of the cell but not others.
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| Osmosis | The movement of water across a cell membrane from a region of high concentration to a region of low concentration.
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| Diffusion | The movement of an atom or molecule across a cell membrane from a region of high concentration to a region of low concentration.
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| Heredity | The passing of genetic material from a parent organism to its offspring.
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| Gene | Sections of genetic material that contain instructions for an inherited trait.
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| Dominant Trait | Traits that are visible in the offspring when parents that have different traits are bred.
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| Recessive Trait | Traits that disappear and are not observed in the offspring when parents that have different traits are bred.
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| Allele | Different forms of genes.
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| Punnett Square | A diagram used to figure out what type of offspring will be produced when two parents are bred by sexual reproduction.
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| Cytoplasm | The gel-like substance enclosed within the cell membrane.
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| Prokaryotic Cell | A simple cell that does not have a nucleus and has few membrane-enclosed organelles.
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| Eukaryotic Cell | A more complex cell that contains a nucleus and more membrane-enclosed organelles.
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