A B Nucleus Regulates all cell activities Cell Membrane Is made out of phospholipids and proteins Mitochondrion Site of cellular respiration "power house" Lysosome Suicide Sacks that contain digestive enzymes Rough Endoplasmic Reticulum Contains Ribosomes, transports proteins and other materials Smooth Endoplasmic Reticulum Contains no ribosomes, stores proteins Gogi complex (apparatus) Processes and packages proteins Nucleuolus Dark spot of chromatin in the nucleous where ribosomes are produced Cytoplasm Colloid that contains water and nutrients and supports the organelles Organelles The parts of a cell with a particular function Prokaryotic Cells with no true nucleus and no membrane bound organelles Eukaryotic Cells that contain a true nucleus and membrane bound organelles Centrioles Only in animal cells, aid in cell division Ribosomes Produce Proteins Chloroplast Found only in plants, site of photosynthesis Vacuoles Large storage sacks found mainly in plants Cell Wall Structure in plants made of cellulose that is outside of the cell membrane Chromatin Thin strands of DNA and proteins found in the nucleus of a cell. Cell Smallest unit of life Cytoskeleton Long protein filaments in the cytosol that support the cell.