Biology Chapter 4 Key Terms

protein-DNA complex that serves as the chromosomes' building material

short, hair-like structure that extends from the plasma membrane in large numbers and functions to move an entire cell or move substances along the cell's outer surface

entire region between the plasma membrane and the nuclear envelope, consisting of organelles suspended in the gel-like cytosol, the cytoskeleton, and various chemicals

material secreted from animal or fungal cells that provides mechanical protection and anchoring for the cells in the tissue

long, hair-like structure that extends from the plasma membrane and moves the cell

cell organelle that houses the cell’s DNA and directs ribosome and protein synthesis

double-membrane structure that constitutes the nucleus' outermost portion

darkly staining body within the nucleus that is responsible for assembling ribosome subunits

semi-solid fluid inside the nucleus that contains the chromatin and nucleolus

phospholipid bilayer with embedded (integral) or attached (peripheral) proteins, and separates the cell's internal content from its surrounding environment

cellular structure that carries out protein synthesis

a biological concept that states that one or more cells comprise all organisms; the cell is the basic unit of life; and new cells arise from existing cells

membrane-bound sac, somewhat larger than a vesicle, which functions in cellular storage and transport

small, membrane-bound sac that functions in cellular storage and transport; its membrane is capable of fusing with the plasma membrane and the membranes of the endoplasmic reticulum and Golgi apparatus