| A | B |
|---|
| cell membrane | the outside boundary of a cell; the cell membrane controls which substances can enter or leave the cell |
| cell wall | a rigid layer of nonliving material that surrounds the cells of plants and some other organisms |
| chloroplast | a structure in the cells of plants and some other organisms that captures energy from light and uses it to produce food |
| chromosome | a rod-shaped cellular structure made of condensed chromatin; contains DNA, which carries the genetic information that controls inherited characteristics such as eye color and blood type |
| cytoplasm | the region of a cell located inside the cell membrane (in prokayotes) or between the cell membrane and nucleus ( in eukaryotes);contains a gel-like material and cell organelles |
| endoplasmic reticulum | a cell strucuter that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another |
| eukaryote | an organism with cells that contain nuclei and other cell structures |
| Golgi body | a structure in a cell that recieves proteins and other newly formed materials from the endoplasmic reticulum, packages them, and distributes them to other parts of the cell |
| lyosome | a small round cell structure that contains chemicals that break down large food particles into smaller pieces |
| mitochondria | rod-shaped cell structures that produce most of the energy needed to carry out the cell's functions |
| nucleus | the control center of a cell that directs the cell's activities; contains the chemical instructions that direct all the cells activities and determine the cell's characteristics |
| organ | a structure in the body that is composed of different kinds of tissue |
| organ system | a group of organs that work together to preform a major function in the body |
| organelle | a tiny cell structure that carries out a specific function within the cell |
| population | all the members of one species in a particular area |
| prokaryote | an organism whose cells lack a nucleus and some other cell structures |
| ribosome | a small, grainlike structure in the cytoplasm of a cell where proteins are made |
| tissue | a group of smaller cells that preform a specific function in an organism |
| vacuole | a water-filled sac inside a cell that acts as a storage area |
| chromatin | thin strands that contian the genetic material, the instructions that tell the cell what to do. |
