| A | B |
|---|
| mitochondria | the "powerhouse of the cell; a rice-shaped structure that produces energy for the cell |
| nucleus | the "brain" of the cell; the control center of the cell |
| ribosomes | small round structures that make proteins for the cell |
| cellulose | hard, nonliving material that makes up the cell wall of plant cells |
| chloroplasts | round, green structures in plant cells that contain chlorophyll |
| vacuoles | liquid-filled storage spaces in the cytoplasm |
| cell membrane | a thin strucutre that surrounds the cell |
| cytoplasm | all of the living material inside the cell; the gel that contains the other small structures |
| cell wall | outer nonliving part of a plant cell |
| chlorophyll | green material found in chloroplasts that plants need to make their food |
| organelles | small structures in the cytoplasm that do special jobs within the cell |
| cell | the basic unit of structure and function in living things |
| theory | an idea that explains something and is supported by data over time |
| organ | a group of tissues that work together to do a special job |
| tissue | a group of cells that look alike and work together |
| organ system | a group of organs that work together |
| connective tissue | tissue that holds parts of the body together |
| epithelial tissue | tissue that covers and protects parts of the body |
| plasma | the liquid part of the blood |
| white blood cells | a type of blood cell that destroys germs in the body |
| red blood cells | a type of blood cell that carries oxygen |
| guard cell | a specialized plant cell that helps control the passage of materials into and out of the stomates |
| mitosis | the division of the nucleus of a cell |
| cell division | the process by which cells reproduce |
| daughter cells | the new cells produced by cell division |
| chromosomes | cell parts that determine what traits a living thing will have |
| diffusion | movement of material from an area where molecules are crowded to an area where they are less crowded |
| osmosis | movement of water molecules through a membrane |
