7th grade semester exam-Dillon Johnson

4. thick gel-like fluid inside the cell between the nucleus and the cell membrane
6. a community in which populations of plant or animals remain stable and exist in balance
8. a series of predictable changes that occur in a community over time
10. the offspring of many generations that have the same traits
11. the basic unit of life
12. a nonliving part in an ecosystem
13. two or more atoms joined together chemically
14. controls the activities of the cell
15. a distinct group of animals or plants that have common characteristics and can breed with each other
17. a simple sugar which is an important energy source in living organisms
18. an organism that obtains energy from the sun through photosynthesis
19. any living thing
20. long chain of molecules containing genetic info that makes up chromosomes
21. a segment of DNA that has the codes for specific DNA

1. an organism that breaks down waste and dead organisms
2. the type of plant tissue that transports food from the leaves to the other part of the plant
3. an organisms characteristics
5. energy given off during transformation
6. the average weather conditions in a certain area
7. any bitoic or aboitic factors in an environment that restrict population growth
9. rigid later surrounding a plant cell that provides support, strength, and shape
16. a group of similar cells that do the same work
18. a chart that is used to calculate the probability of an offspring combination of alleles