Biology Crossword Puzzle

3. A living thing that makes its own food.
4. A disease-causing organism like bacteria or viruses.
5. This happens when water moves across a cell membrane from high to low concentration.
8. The “powerhouse” process that releases energy from food in cells.
10. The movement of particles from high concentration to low concentration.
13. The process plants use sunlight to make their own food.
14. The genetic makeup of an organism.
16. The basic unit of life
17. System A body system that protects against disease.
18. The passing of traits from parents to offspring.

1. A change in DNA that can affect traits.
2. The balance the body keeps to stay stable inside.
6. A living thing that must eat other organisms for energy.
7. The process where one cell splits into two identical cells.
8. A structure that carries genetic information.
9. The physical appearance of a trait, like brown eyes.
11. The variety of living things in an ecosystem.
12. An organism that breaks down dead material.
15. A substance that speeds up chemical reactions in living things.
19. Selection The process where organisms with helpful traits survive and reproduce more.