NC Practice EOC Exam

1. Which of the following is a characteristic found only in living things? A. requires energy B. is able to grow C. composed of cells D. responds to the environment The correct answer is…. C

2. A saltwater fish is placed into a freshwater lake will die soon afterwards. Why does this happen? A. The saltwater fish is unable to adapt to changes in temperature. B. The saltwater fish is unable to adapt to changes in pH. C. The saltwater fish is unable to adapt to changes in salinity. D. The saltwater fish is unable to adapt to changes in nutrient concentration. The correct answer is…. C

3. What will happen to a freshwater fish place in saltwater? A. The fish will dehydrate. B. The fish will gain water. C. The fish will neither gain nor lose water. D. The fish will gain water at first and then lose it. The correct answer is…. A

4. Why will a lizard bask in the sun? A. to absorb ultraviolet radiation? B. to attract members of the opposite sex C. to avoid predators by camouflage D. to help the lizard maintain homeostasis. The correct answer is….. D

5. The following reaction occurs during the light reactions of photosynthesis. What does this equation represent? Water  hydrogen+ oxygen A. making bonds, storing energy B. making bonds, releasing energy C. breaking bonds, storing energy D. breaking bonds, releasing energy The correct answer is… D

6. During cellular respiration, a great deal of energy is released into the cell. What form does that energy take? A. ATP B. glucose C. heat D. light The correct answer is….. A

7. The complementary strands of DNA are held together by what type of bond? A. ionic B. covalent C. hydrogen D. nonpolar The correct answer is…… C

8. Water striders, a type of aquatic insect, are able to walk on top of water. What characteristics of water enables them to do this? A. Water is the universal solvent. B. Hydrogen bonds help water molecules to stick to each other. C. Ice is less dense that liquid water. D. Water boils at 100C and freezes at 0C. The correct answer is…. B

9.Which of the following is a subunit of a lipid? A. amino acids B. fatty acids C. glucose D. steroid The correct answer is….. B

10. Which of the following is a subunit of a carbohydrate? A. cellulose B. glucose C. glycogen D. starch The correct answer is… B

11. Which of the following is a subunit of a protein? A. amino acid B. fatty acid C. glucose D. glyercol The correct answer is… A

12. DNA and RNA are made up of subunits. What would one of these subunits be called? A. chromosome B. nucleic acid C. nucleosome D. nucleotide The correct answer is… D

13.Which of the following statements most closely represents what an organic compound is? A. usually contains carbon and associated with non- living things B. usually contains water and associated with living things C. usually contains carbon and associated with living things D. usually contains water and associated with non-living things. The correct answer is… C

14. In humans, where does the majority of our energy come from? A. carbohydrates B. lipids C. nucleic acids D. protein The correct answer is… A

15. What food group supplies the necessary materials for growth and repair of living cells? A. carbohydrates B. lipids C. proteins D. water The correct answer is… C

16. Long term energy storage is provided by what group of organic molecules? A. carbohydrates B. lipids C. proteins D. water The correct answer is… B

17. Which of the following would be considered an inorganic molecule? A. carbohydrates B. lipids C. proteins D. water The correct answer is … D

18. Which of the following pairs of cell organelles is correctly matched with its function? A. nucleus – reproduction B.mitochondria – protein synthesis C. ribosomes – storage D. vacoules – photosynthesis The correct answer is… A

19. Cells lacking a cell wall would also lack which other organelle? A. nucleus B. cell membrane C. chloroplast D. ribosomes The correct answer is… C

20. Which part of the compound microscope controls the amount of light that reaches the specimen? A. condenser B. diaphragm C. objective lens D. ocular The correct answer is… B