Cells & Systems 2.0

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Pseudopods
A "false foot" or temporary bulge of cytoplasm used for feeding and movement
Cilia
Hairlike projections that extend from the plasma membrane and are used for locomotion
Unicellular organism
An organism made up of one cell, relies on that one cell for all its needs
Multicellular organism
Organism made up of many cells, that relies on many cells for its needs
Diffusion
Movement of molecules from an area of higher concentration to an area of lower concentration.
Osmosis
Diffusion of water through a selectively permeable membrane
Selective permeability
A property of a plasma membrane that allows some substances to cross more easily than others.
Red blood cells
Blood cells that carry oxygen from the lungs to the body cells.
Marrow
a soft fatty substance in the cavities of bones, in which blood cells are produced
Connective tissue
A body tissue that provides support for the body and connects all of its parts. Examples: blood, fat, cartilage, bones, tendons
Nervous tissue
A body tissue that carries electrical messages back and forth between the brain and every other part of the body. Makes up brain, spinal cord, and nerves
Epithelial tissue
Tissue that covers outside of the body and lines organs and cavities.
Muscle tissue
A body tissue that contracts or shortens, making body parts move.
Photosynthetic tissue
Plant tissue in leaves used to make food by photosynthesis using sunlight.
Protective tissue
Outer covering of roots, stems, and leaves that provides protection. examples: waxy cuticle on leaves reduce water loss and cork protects inner tissues of woody stems
Transport tissue
Moves water and nutrients through the plant. Phloem transports food, xylem transports water
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