| A | B |
|---|
| plasma membrane | Provides a boundary between the cell and its environment |
| cytoplasm | Watery cell fluid that contains the cell organelles, many life processes take place here |
| nucleus | Controls cell activities |
| nucleolus | Involved in production of ribosomes (ribosome synthesis) |
| ribosomes | Make proteins (protein synthesis) |
| endoplasmic reticulum | System of channels or canals that transport materials throughout the cell |
| mitochondria | Involved in cell respiration, "powerhouse of the cell," makes ATP (an energy molecule) |
| golgi complex | Synthesizes, packages, and secretes cell products |
| lysosomes | Destroys damaged or old cell parts or cells in multicellular animals |
| vacuoles | Store water, wastes, and food |
| centrioles | Involved in cell division |
| chloroplasts | Involved in manufacture of food for plants (photosynthesis) |
| cell wall | Surrounds the cell membrane and its contents, gives the plant its shape |
| active transport | This process requires cellular energy. Materials moving from and area of lower concentration to an area of higher concentration |
| aerobic respiration | Process that combines sugar (food) and oxygen in the presence of enzymes to make energy |
| anaerobic respiration | A respiration process that does not require oxygen. A small amount of energy is produced along with carbon dioxide an either alcohol or lactic acid |
| chlorophyll | The green pigment in chloroplasts |
| chromosomes | Long threadlike structures located in the nucleus of the cell. They contain heredity information organized as genes. |
| fermentation | Another name for anaerobic respiration |
| nuclear membrane | Membrane that surrounds the nucleus |
| organelles | Small structures located inside the cell |
| organs | A group of specialized tissues performing one main function |
| osmosis | A special kind of diffusion where water moves across a semipermeable membrane from an area of higher concentration to an area of lower concentration |
| passive transport | Another name for diffusion. It is a process that does not use cell energy. |
| photosynthesis | The process by which plants make food |
| plasma membrane | The plasma membrane or cell membrane is a double-layered structure that surround the cell. It provides a boundary between the cell and its environment. |
| selectively permeable | A membrane that allows only certain substances to pass through it |
| organ systems | A group of organs that cary on one of the major body functions |
| tissues | Groups of similiar cells performing the same function |
| vacuoles | Organelles that are located in the cytoplasm and are used by the cell for the storage of various materials including water, wastes, and food |
