EOG Review

1. Students will need a calculator and a periodic table! EOG Review Science 8th grade

2. An atom is composed of protons, electrons, and neutrons. What is the electric charge on the proton? • 0 • -1 • +1 • +2 15

3. The organelle that is responsible for making glucose is the ____ • Mitochondria • Chloroplast • Ribosome • Lysosome 15

4. The cellular process that breaks down glucose to produce energy is______ • Respiration • Photosynthesis • Mitochondria • Chloroplast 15

5. Which of the following is not one of the statements of the Cell Theory? • All living things are made up of one or more cells. • Cells perform basic life functions. • Cells come from other living cells. • All cells are capable of making glucose. 10

6. Most cells obtain water through which process? • Diffusion • Osmosis • Exocytosis • Active transport 15

7. A substance that is made up of two or more elements is called ____ • An element • A compound • A mixture • A solution 15

8. Which process involves an increase in the size of an individual cell or a multi-cellular organism? • regulation • reproduction • meiosis • protein synthesis 15

9. Hillary goes to the doctor for a routine check-up and is surprised to find out that she has the varicella virus in her blood. Because she has not exhibited any symptoms of this disease, Hillary is considered to be ____ • A vector • A carrier • Quarantined • Not contagious 15

10. Animal cells and plant cells differ because plant cells ____ • Have mitochondria, and animal cells do not. • Have nuclei, and animal cells do not. • Have cell walls, and animal cells do not. • Have lysosomes, and animal cells do not. 15

11. If an irregular shaped object has a volume of 22cm3 and a mass of 44 g, what is the object’s density? • 2 g/cm3 • 11 g/cm3 • 0.5 g/cm3 • 968 g/cm3 30

12. What best describes how water moves in one continuous column from a plant’s roots to its leaves? • Density and buoyancy • Polarity and surface tension • Cohesion and adhesion • Polarity and cohesion 15

13. Mary noticed that plants grew taller in her sunny front yard than in her shady backyard. She decides to perform an experiment that tests the amount of light and its effect on plant growth. Which of the following would be the best hypothesis for her experiment? • If the amount of light that a plant is exposed to increases, then the plant will grow less. • If the amount of light that a plant is exposed to decreases, then the plant will grow more. • If the amount of light that a plant is exposed to increases, then the plant will grow more. • If the amount of water that a plant is given increases, then the plant will grow more. 15

14. Tectonic plates make up which of the following layers of the Earth? • The crust only • The mantle only • The crust and the top portion of the mantle • The top portion of the mantle and all of the core 15

15. Where would a plant cell store any excess glucose or water? • The golgi apparatus • The cytoplasm • The central vacuole • The cell membrane 15

16. Which part of the experiment does the person performing the experiment have control over? • The independent variable • The dependent variable • The results • The conclusion 15

17. Which of the following statements about viruses is false? • Viruses are smaller than bacteria. • Viruses are not considered living or nonliving. • Viruses can reproduce on their own. • Viruses cause disease. 15

18. The atomic number of an atom is the number of ____ • Protons • Neutrons • Protons and neutrons combined • Electrons and neutrons combined 15

19. An ion is an atom ____ • That has an unequal number of protons and electrons. • That has an unequal number of protons and neutrons. • That has the same number of protons and neutrons. • That has the same number of protons and electrons. 15

20. Which of the following is true regarding photosynthesis and respiration? • Photosynthesis occurs in the mitochondria; respiration occurs in the chloroplasts. • Photosynthesis breaks down glucose; respiration makes glucose. • Photosynthesis occurs in the chloroplasts; respiration occurs in the mitochondria. • All cells can undergo both photosynthesis and respiration. 15

21. What type of ecosystem is formed in areas where salty ocean water mixes with fresh water from rivers? • Coral reef • Estuary • Intertidal zone • Benthic zone 15

22. Particles floating in water that may make the water cloudy is known as ___ • Concentration • Turbidity • Cohesion • Adhesion 10

23. Which of the following is a change in physical composition? • A brick being ground up into fine dust. • A purple substance forming when iodine is added to cornstarch. • Vinegar bubbling when baking soda is added. • An iron nail rusting. 10

24. Which of the following is a change in chemical composition? • An aluminum cube is rolled into a flat sheet. • Liquid water freezing to form solid ice. • Solid butter melting on the stove. • A white precipitate forming as a result of the combination of two liquids. 10

25. What kind of bond would you expect between H, S and O? • Covalent • Metallic • Ionic • None 15

26. Which of the following is not one of the three processes of the hydrologic cycle? • Condensation • Evaporation • Collection • Precipitation 15

27. Where is most freshwater located on Earth? • Polar ice caps/glaciers • Groundwater • Rivers • Lakes 15

28. An atom is composed of protons, neutrons, and electrons. What is the electric charge on an electron? • 0 • +1 • -1 • +2 15

29. Bacteria are organisms that lack which organelle? • Cell membrane • Mitochondria • Cytoplasm • Nucleus 15

30. Which of the following statements is true regarding prokaryotic cells and eukaryotic cells? • Prokaryotic cells have a nucleus; eukaryotic cells do not have a nucleus. • Prokaryotic cells are able to make glucose; eukaryotic cells are not. • Prokaryotic cells do not have a nucleus; eukaryotic cells have a nucleus. • Prokaryotic cells are not able to make glucose; eukaryotic cells can. 15

31. The process of cells making glucose and oxygen is known as__ • Respiration • Photosynthesis • Mitochondria • Chloroplasts 15

32. Which of the following statements is false regarding bacteria? • Bacteria have DNA. • Bacteria are capable of reproducing. • Bacteria are not made of cells. • Bacteria can be killed with antibiotics. 15

33. How many protons does calcium (Ca) have? • 19 • 20 • 21 • 22 15

34. Which of the following is not one of the main categories of elements on the periodic table? • Nonmetals • Transition metals • Metals • Metalloids 15

35. The elements in the periodic table are organized by___ • Their atomic numbers. • Their names. • Their atomic mass numbers. • Their activity levels. 15

36. Which of the following statements is true regarding cellular respiration? • Respiration occurs in the chloroplasts of cells. • Respiration produces glucose for the cells to use. • Oxygen is used to break down glucose to get energy. • Carbon dioxide is used to break down glucose to get water. 15

37. Mosquitoes and ticks are animals that spread disease to humans. There are considered ______ of West Nile and Lyme disease respectively. • carriers • vectors • pathogens • fungi 15

38. Which level of organization is missing from this grouping: cell, tissue, ______, organ system, organism? • Atoms • Organ • Organelle • Molecules 15

39. At 6:00, approximately how many bacteria are in the culture? • 3,000 • 4,000 • 5,000 • 8,000 30

40. At approximately what time are there 22,000 bacteria cells? • 6:00 • 8:00 • 7:00 • 9:00 30

41. If the bacteria cells are doubling every hour, approximately how many bacteria cells will there be at 10:00? • 47,000 • 78,000 • 54,000 • 88,000 20

42. What is the best explanation for the rapid bacteria growth? • The bacteria cells were infected with a virus causing them to reproduce rapidly. • Bacteria cells reproduce rapidly through binary fission. • Bacteria cells reproduce quickly through mitosis and cytokinesis. • Bacteria cells divide every 3 hours to produce new cells. 15

43. What is the best way to prevent bacterial infection in a cut? • Vaccinations from the doctor. • Stay home until the cut heals so you are not exposed to bacteria. • Wash the cut with soap and water. • Do not cover the wound, leave it open to the air. 15

44. Looking at the column that says maximum amount allowed, what does ppm represent? • Parts per molecule • Parts per million • Portions per minute • Portions per million 15

45. Which two contaminants can cause problems for kidneys? • Mercury and Copper • Nitrates and Copper • Cyanide and Mercury • Nitrates and Cyanide 15

46. A large number of people from the town Andersonville have developed thyroid problems. This town is known for its numerous steel factories. What might investigators conclude after some research? • There is too much copper in the water. • There is too much cyanide in the water. • There is not enough mercury in the water. • There are a lot of sick people in this town. 15

47. Considering the maximum amount allowed, which chemical is the most dangerous? • Copper • Mercury • Cyanide • Nitrates 15

48. Looking at the data table, which of the following statements is NOT true? • Runoff from fertilizer can enter water and cause infants to become sick. • Thyroid problems can be contributed to cyanide poisoning. • Kidney damage can be caused by multiple contaminants. • Only factories and farms can cause water contamination. 15

49. Which describes the hydrosphere? • Most of it contains salt. • It is made of only freshwater. • All of it is located above ground. • It is formed by a climate change. 15

50. Which condition in the ocean is most responsible for an increase in the fish population near the surface? • Buoyancy • Density • Salinity • Upwelling 15