layer of two membranes that surrounds the nucleus of a cell
combination of DNA and protein molecules, in the form of long, thin fibers, making up the genetic material in the nucleus of a eukaryotic cell
condensed threads of genetic material formed from chromatin as a cell prepares to divide
ball-like mass of fibers and granules in a cell nucleus
one of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope
two-layer "sandwich" of molecules that surrounds a cell
the strength of a solution
the process by which molecules move from an area of higher concentration to an area of lower concentration
When the concentration of a solute is the same throughout a solution
diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal
having a solute concentration equal to that of another solution
having a higher concentration of solute than another solution
having a lower concentration of solute than another solution
pathway provided by transport proteins that helps certain molecules pass through a membrane
movement of molecules across a membrane requiring energy to be expended by the cell
process of taking material into a cell within vesicles that bud inward from the plasma membrane
the process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food
process by which a cell takes in liquid from the surrounding environment
process of exporting proteins from a cell by a vesicle fusing with the plasma membrane and spilling the proteins outside the cell
the process in which cells develop in different ways to perform different tasks
cooperating unit of many similar cells that perform a specific function
unit consisting of several tissues that together perform a specific task
unit of multiple organs that together perform a vital body function
main energy source that cells use for most of their work
straight, hollow tube of proteins that gives rigidity, shape, and organization to a cell
solid rod of protein, thinner than a microtubule, that enables a cell to move or change shape
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