surface membrane and secretion out of the cell. Ribosome Small organelle The site of protein Not membrane bound synthesis. Consists of two subunits mRNA from the nucleus is read and used to assemble amino acids. Lysosome Spherical sacs surrounded by a Protects the cell from single layer of membrane. enzymes contained within. Contain powerful digestive Enzymes are used in the enzymes. breakdown of materials e.g. cells taken up by white blood cells taken up in phagocytosis. Vesicle Membrane sac Used to move substances around cells. Present in all living cells Plasma Controlls the passage of Provides a selective barrier Membrane substances into and out of between the cells contents and (Cell surface the cell . the external environment membrane) Regulates the internal environment of the cell. Mitochondria Spherical sausage shaped Site of aerobic respiration organelle formed from two Produce adenosine triphosphate (ATP) membranes. The inner membrane is highly folded to form cristae. Chloroplast Found only in plant cells Site of photosynthesis a Two layers of membranes process in Glucose is The layer is continuous and produced. forms flattened membrane sacs Contain chlorophyll: a called thylakoids. photosynthetic pigment.
surface membrane and secretion out of the cell. Ribosome Small organelle Not membrane bound Consists of two subunits The site of protein synthesis. mRNA from the nucleus is read and used to assemble amino acids. Lysosome Spherical sacs surrounded by a single layer of membrane. Contain powerful digestive enzymes. Protects the cell from enzymes contained within. Enzymes are used in the breakdown of materials e.g. cells taken up by white blood cells taken up in phagocytosis. Vesicle Membrane sac Used to move substances around cells. Plasma Membrane (Cell surface membrane) Present in all living cells Provides a selective barrier between the cells contents and the external environment Controlls the passage of substances into and out of the cell . Regulates the internal environment of the cell. Mitochondria Spherical sausage shaped organelle formed from two membranes. The inner membrane is highly folded to form cristae. Site of aerobic respiration Produce adenosine triphosphate (ATP) Chloroplast Found only in plant cells Two layers of membranes The layer is continuous and forms flattened membrane sacs called thylakoids. Site of photosynthesis a process in Glucose is produced. Contain chlorophyll: a photosynthetic pigment.
cell_organelle_cheat_sheet.docx