Cell membranethin, flexible barrier around a cell;regulates what enters and leaves the cell.Composed of phospholipidsCell wallstrong layer around the cell membrane inplants, algae, and some bacteria.Composed of cellulose in plants.CentriolesTwo small tube-like structures incytoplasm near the nucleus that aid incell division.chloroplastplastid containing chlorophyll and otherpigments; performs photosynthesisChromatingranular material visible within thenucleus; consists of DNA tightly coiledaround proteins. "Just chillin'" DNACytoskeletona network of protein filaments that holdsthe cell together, helps the cell to keep itsshape, and aids in movementCytosolthe soluble portion of the cytoplasm, which includesmolecules and small particles, such as ribosomes, butnot the organelles covered with membranesGolgiAn organelle in eukaryotic cells consisting of stacks offlat membranous sacs that modify, store, and routeproducts of the endoplasmic reticulum (process,package, ship)leucoplastplastid, generally colorless, thatsynthesizes and stores starch and oilslysosomesCell organelle filled with enzymes neededto break down certain materials in thecellMitochondriarod-shaped cell structures that convert energy in foodmolecules to energy the cell can use to carry out itsfunctions; power house, produces energyNuclear Membranedouble membrane (lipid bilayer)surrounding the nucleus that controlswhat enters and leavesNucleolusa small round body of protein in a cellnucleus where ribosomes are made,synthesized and partially assembledPeroxisomesMembranous sacs containing enzymesused to break down hydrogen peroxide,alcohol and, other harmful substancesRibosomessmall particle in the cell on whichproteins are assembled; made of RNAand proteinRough EndoplasmicReticulumA network of interconnected internal membranesforming channels within the cell. Covered withribosomes. Transportation, production of proteins byattached ribosomes.Smooth EndoplasmicReticulumAn endomembrane system where lipids aresynthesized, calcium levels are regulated,and toxic substances are broken down.VacuolesMembrane surrounded "bags"; Small inanimal cells, large in plant cells. Function:Storage of food, water, and other
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