What is the role of the nucleus in a plant or animal cell ?

1. The development of the microscope made it possible for people to?F measure the force of gravity.G view the planets in the solar system.H explain the types of heat transfer.J view the small structures inside cells.

2. What is the role of the nucleus in a plant or animal cell? A controls what enters and leaves the cell B stores nutrients for the cell C produces food for the cell D controls the activities of the cell

3. Which process do plants use to make the energy they need? F symbiosis G respiration H pollination J photosynthesis

4. Which organism obtains energy in the same way as a tree? A lizard B field mouse C grass D jackrabbit

5. A male guinea pig receives information that determines its physical characteristics. This information comes from F both parents. G neither parent. H only the dominant parent. J only the male parent.

6. Which of these is an inherited trait? A braided hair B pierced ears C ability to read D eye color

7. Lichens are made of fungi and algae that benefit from growing together. Which of these best describes this relationship? A parasitic B commensal C competitive D mutualistic

8. An ecosystem of forests was destroyed and replaced with a large shopping mall. Predict how his will most likely affect the environment of the area. F result in habitat destruction G provide more wildlife habitats H cause an increase in the number of species J cause a decrease in human population

9. Which of these describes a chemical change in matter? A Wax melts. B Paper burns. C Rocks break. D Copper shines.

10. Which of these is the best example of potential energy? F a ball rolling on a soccer field G a boulder sitting on top of a steep hill H a marble at rest on the fl oor J a person riding a bicycle on a fl at surface

11. During a heat transfer demonstration, students observed water being pumped around a closed loop in an engine. The moving water carries heat from the hot engine to the radiator. Which type of heat transfer is involved when the cooler water absorbs heat while in contact with the hot engine? A convection B conduction C insulation D radiation

12. A dog has 6 puppies, 4 females and 2 males. Which statement best describes the characteristics of the puppies? A) All of the puppies will look exactly like the mother. B ) All of the puppies will look exactly like the father. C ) The male and female puppies will look like both the mother and the father. D ) The male puppies will look like the father, and the female puppies will look like the mother.

13. Which would most likely cause a substance to melt? A addition of heat B removal of heat C increase in mass D decrease in mass

14. As a city’s population grows, wooded areas are replaced by housing developments. What effect will this most likely have on the species in the wooded areas? F) More natural predators will move to the wooded areas. G ) New species will migrate to the wooded areas. H) A few species will adapt to become predators. J) The population of some species will become zero.

15. An airplane is slowing down and flying lower as it prepares to land at an airport. Which statement best describes the energy of the airplane? F) The kinetic energy decreases, and the potential energy decreases. G) The kinetic energy decreases, and the potential energy increases. H) The kinetic energy increases, and the potential energy decreases. J) The kinetic energy increases, and the potential energy increases.

16. A certain type of mite is a parasite of honeybees. Which statement best describes the relationship between the mites and the bees? A) The mites harm the bees by feeding on their blood. B) The mites get honey in return for helping the bees stay healthy. C) The mites help the bees find food but get nothing in return. D) The mites live in the hive of the bees but do not interact with the bees.

17. Which structures are found in both plant and animal cells? F chloroplast and cytoplasm G mitochondrion and chloroplast H vacuole and cell wall J nucleus and vacuole

18. A flea is a parasite that gets its energy from the blood of animals like dogs. How are the flea and dog affected in this relationship? A Both organisms are helped. B Both organisms are unaffected. C The flea is helped, and the dog is harmed. D The dog is helped, and the fl ea is not affected.

19. Which of these has the greatest effect on how tall a student will grow? A genetic material from both parents B genetic material from the shortest parent C the height of the oldest sibling D the average height of the other siblings

20. Which of these is a physical property? F ability to rust in water G ability to react with acid H ability to melt when heated J ability to burn in oxygen

21. Which structure is found only in plant cells? F chloroplast G cytoplasm H cell membrane J nucleus

22. Which is a product of photosynthesis? A sugar B carbon dioxide C water D sunlight

23. Which statement best explains how the bamboo plant and the giant panda obtain energy? F The bamboo plant obtains energy from soil, and the giant panda obtains energy from the bamboo plant. G The bamboo plant obtains energy from the sun, and the giant panda obtains energy from the bamboo plant. H The bamboo plant obtains energy from soil, and the giant panda obtains energy from the sun. J The bamboo plant obtains energy from the sun, and the giant panda obtains energy from soil.

24. The fur color of the squirrel is determined by A genes that came only from its mother. B genes that came only from its father. C a combination of genes that came from its siblings. D a combination of genes that came from both of its parents.

25. What trait is not inherited? F height G eye color H dimples J hair style

26. What tool is used by doctors to identify tiny organisms that may cause diseases in humans? A microscope B graduated cylinder C test tube D telescope

27. A vulture eats a dead rabbit that was killed earlier by a coyote. Which best describes the role of the vulture? F predator G scavenger H parasite J decomposer

28. What will most likely happen to an environment downstream from where a dam is built? F There will be more wildlife. G Food crops will increase. H Populations of fish will decrease. J There will be a greater variety of fish.

29. Which adaptation would best help an animal survive a cold, dry tundra? A scaly skin B long tail C thick, fat layer D large, round eyes

30. scientist discovers a fossilized jawbone that still has the teeth. The teeth are wide and flat. What is the most likely conclusion a scientist could form from this fossil? F The animal flew through the air. G The animal ate plants. H The animal lived near water. J The animal walked on four legs.

31. Scientists have been experimenting with ways to preserve foods due to high spoilage rates. In which way can scientists use low levels of radiation to make food safer? A precook food with radiation before it is packaged B use radiation to increase nutrients in food C pass food through radiation to kill harmful bacteria D expose food to radiation to improve taste

32. Which describes a chemical property of a substance? F able to float in water G able to break easily H able to melt at high temperatures J able to react with oxygen