Biology Crossword

6. An organelle in plant cells that captures light energy for making food.
8. A system of membranes that helps make and transport proteins and other materials.
11. An organelle that breaks down waste and worn-out cell parts.
12. A stiff outer layer that supports and protects plant cells.
14. The smallest basic unit of life.
15. Organelles that produce most of the usable energy for a cell.
16. The study of living things and how they function.
18. Movement of substances across a cell membrane without using cellular energy.
19. A small building block that can join with others to make a larger molecule.
20. The specific part of an enzyme where a substance attaches.

1. A type of biomolecule that provides quick energy for cells.
2. The organelle that contains the cell's DNA and controls many cell activities.
3. A biomolecule used for long-term energy storage and making cell membranes.
4. The process of joining small molecules together to form a larger molecule.
5. The movement of water across a selectively permeable membrane.
7. A biomolecule that stores and carries genetic information.
9. A protein that speeds up a chemical reaction in a cell.
10. The thin layer that controls what enters and leaves a cell.
13. Movement of substances across a cell membrane using energy.
17. An organelle that modifies, sorts, and packages proteins and other materials.