Biology Cells

Basic unit of all forms of life

All living things are composed of cells; Cells are the basic unit of structure and function in living things; New cells are produced by existing cells

Regulates what enters are leaves the cell

Serves both as the repository of genetic information and as the cell's control center

site of chemical reactions

site of protein synthesis

contains cell sap

contains chlorophyll, site of photosynthesis

site of aerobic respiration

made up of cellulose and is fully permeable and provides shape to the cell

only allowing some in and some molecules in and some not.

movement of molecules down the concentration gradient

requires energy for membrane proteins to move molecules and ions against the concentration gradient

movement of water molecules from a higher concentration to a lower concentration through a selectively permeable membrane. (a passive process that does not require energy)

Movement of molecules for LOW concentration to HIGH concentration

Cell wall: (made up of cellulose, fully permeable and provides support and shape to the cell.) Vacule: (contains cell sap) chloroplast: (contains chlorophyll and is the site of photosynthesis