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| the selectively permeable outer boundary of a cell consisting of a phospholipid bilayer embedded with proteins; |
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| part of a cell that houses the genetic material and controls cellular activities |
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| the gel-like contents of a cell(cytosol) and organelles, excluding the nucleus; enclosed by the cell membrane |
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| a structure in a cell that has an organized function |
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| a membrane that allows some molecules through but not others; semipermeable |
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| a cell's framework of protein filaments and tubules |
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| organelle composed of a network of connected membranous tubules and vesicles |
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| organelle composed of RNA and protein that is a structural support for protein synthesis and includes RNA molecules that function as enzymes |
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| organelle that prepares and modifies cellular products for secretion |
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| organelles housing enzymes that catalyze the reactions of aerobic respiration |
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| organelle that contains digestive enzymes |
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| membranous sacs abundant in liver and kidney cells that contain enzymes that catalyze a variety of biochemical reactions |
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| a tiny rod of actin protein in the cytoplasm that provides structural support and movement |
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| a minute, hollow rod constructed of mamy molecules of the protein tubulin |
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| organelle consisting of two centrioles |
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| microscopic, hairlike processes on the exposed surfaces of certain epithelial cells |
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| motile, tail-like cellular structure such as on a sperm cell |
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| membranous, cytoplasmic sacs formed by infoldings of the cell membrane |
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| double-layered envelope that encloses the nucleus; consists of inner and outer lipid bi-layer membranes |
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| a small, dense body in the cell nucleus composed largely of RNA and protein; |
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| DNA and complexed protein that condenses to form chromosomes during mitosis |
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| rodlike structures that condense from chromatin in a cell's nucleus during mitosis |
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| random movement of molecules from a region of higher concentration toward one of lower concentration |
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| a state of balance between opposing forces |
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| diffusion in which carrier molecules transport substances across membranes from a region of higher concentration to a region of lower concentration |
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| movement of water through a semipermeable membrane from an area of greater water concentration to an area of lesser water concentration |
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| a solution with the same osmotic pressure as the solution with which it is compared |
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| a solution with a lower osmotic pressure than the solution with which it is compared |
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| a solution with a greater osmotic pressure than the solution with which it is compared |
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| movement of small molecules through a membrane by hydrostatic pressure, while large molecules are restricted |
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| fluid accumulation with tissue spaces |
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| process that requires energy to move a substance across a cell membrane, usually against the concentration gradient |
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| process by which a cell membrane envelopes a substance and draws it into a cell in a vesicle |
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| transport of substances out of a cell in membrane-bound vesicles |
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| process by which a cell engulfs droplets of fluid from its surroundings |
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| process by which a cell engulfs and digests solids |
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| receptor-mediated endocytosis |
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Definition
| receptors bind specific ligands and they are drawn into the cell |
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| period between cell divisions when a cell metabolizes and prepares to divide |
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| a form of cell division that produces two somatic cells with identical chromosome numbers as the original somatic cell |
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| division of the cytoplasm |
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| stage of mitosis when chromosomes become visible |
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| stage in mitosis when chromosomes align in the middle of the cell |
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| stage of mitosis when duplicate chromosomes move to opposite poles of the cell |
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| stage in mitosis when newly formed cells seperate |
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| an undifferentiated cell that can divide to yield two daughter stem cells, or a stem cell and a progenitor cell |
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| daughter cell of a stem cell that is partially specialized |
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