Middle School Science Review 1

2. A group of organisms in a system.
5. Gas turning to solid.
7. Assembled on ribosomes and have many different functions.
8. The part of the cell that regulates what goes in an out.
10. Organism > Organ > Tissue > Cell >
12. An essential element for life. Found in rocks/sediment.
14. The name of the top predator in a food web.
15. Life on Earth could not exist without this molecule. We try to find it on other planets.
17. Mass times acceleration.
18. The fundamental unit of life.
20. A single celled organism.
21. Newton's 2nd Law.
22. This is the gas from the air our body uses when we breathe.
23. Sections of chromosomes. Unit of heredity.
25. The D and the N in DNA.
26. Using sunlight as a catalyst to make sugar and oxygen from CO2 and water.

1. A solid turning to liquid.
2. In an ecosystem, these organisms get energy from sunlight or chemicals in the environment.
3. Tectonic plates moving away from each other is called continental___________.
4. These organisms eat other organisms for energy.
6. Liquid turning to gas.
9. Organisms classified as plant, animals, and fungi.
11. The nucleotide that pairs with Adenine on RNA.
13. Solid turning to gas.
16. A noticeable pulling force that planets have on anything smaller than them.
18. Can be found in its pure form as graphite, diamonds, or coal.
19. An essential element for life. Most abundant gas in the atmosphere.
24. The part of the cell that contains genetic information. Also the central mass of an atom.