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Cells
Cell Organelles and their Functions
Question | Answer |
---|---|
Cell | Smallest unit of structure and function in living things that show the CHARACTERISTICS of LIFE |
Cell Membrane | Thin layer of lipids and proteins that surround a cell and controls the passage of materials in and out (AKA PLASMA MEMBRANE) |
Cell Theory | States that 1) Cells are the basic units of life 2) Cells arise from preexisting cells and 3) All living organisms are composed of cells |
Cell Wall | Rigid structure made of CELLULOSE that surrounds PLANT CELLS |
Chlorophyll | Green pigment in chloroplasts that absorb light for photosynthesis in plants |
Chloroplast | Site of photosynthesis |
Chromosome | Contains hereditary information (DNA) that is only visible when the cell divides |
Cytoplasm | Watery material inside a cell that is used as a medium to transport materials |
Endoplasmic Reticulum | Used for transport of proteins in a cell |
Mitochondria | Site of cellular respiration in a cell |
Nucleus | Membrane-bound organelle that contains DNA |
Organelles | Structures inside cells that perform specific functions |
Receptor Molecules | Involved in cell signaling, they are special proteins inserted in cell membranes that bind to other molecules based on their shape |
Ribosomes | Site of protein synthesis |
Semi-Permeable | Ability of a membrane to allow SOME but NOT ALL substance to pass through |
Vacuole | Storage sac in a cell that holds water and wastes |