Unit 2: Cells

5. An organelle that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another.
6. membrane A thin, flexible barrier that surrounds a cell and controls which substances pass into and out of a cell.
9. A group of similar cells that perform a specific function.
11. A large oval organelle that contains the cell's genetic material in the form of DNA and controls many of the cell's activities.
13. An organelle in the cells of plants and some other organisms that captures energy from sunlight and changes it to an energy form that cells can use in making food.
14. Consisting of many cells.
15. An organelle in a cell that receives proteins and other newly formed materials from the endoplasmic reticulum, packages them, and distributes them to other parts of the cell.

1. A sac-like organelle that stores water, food, and other materials.
2. Made of a single cell.
3. The thick fluid region of a cell located inside the cell membrane or between the cell membrane and nucleus.
4. wall A rigid supporting layer that surrounds the cells of plants and some other organisms.
6. Rod-shaped organelles that convert energy in food molecules to energy the cell can use to carry out its functions.
7. A cell organelle which contains chemicals that break down large food particles into smaller ones and that can be used by the rest of the cell.
8. A small grain-shaped organelle in the cytoplasm of a cell that produces proteins.
10. A body structure that is composed of different kinds of tissues that work together.
12. A tiny cell structure that carries out a specific function within the cell.