2. Scientific Method The Metric System Matter & Water Macromolecules & Enzymes Cells 10 20 30 40 50

3. Question 1 - 10 You should always be aware of and follow these in a lab.

4. Answer 1 – 10 What are lab safety rules?

5. Question 1 - 20 A hypothesis is a proposed scientific explanation based on prior knowledge. A well tested explanation that unifies a broad range of observations is this.

6. Answer 1 – 20 What is a theory?

7. Question 1 - 30 Scientists are always observing a doing this. It is the first step of the scientific method.

8. Answer 1 – 30 What is asking questions?

9. Question 1 - 40 This type of variable refers to what is observed or measured in an experiment. It changes in response to the manipulated variable.

10. Answer 1 – 40 What is the responding variable?

11. Question 1 - 50 In an experiment, this is the variable that you purposefully change. In our rabbit example, it would be the rabbit who was given the ice pack.

12. Answer 1 – 50 What is the manipulated variable?

13. Question 2 - 10 This is the common measurement system used by scientists. It is based on a scale that moves by multiples of 10.

14. Answer 2 – 10 What is the metric system?

15. Question 2 - 20 This is the metric unit of measurement for mass. We use a triple beam balance to measure these.

16. Answer 2 – 20 What is a gram?

17. Question 2 - 30 71.0 kiloliters is equal to this many decaliters?

18. Answer 2 – 30 What is 7,100 decaliters?

19. Question 2 - 40 This unit of the metric system is used to measure the size of very small objects, such as the length of a cell. It is 1/1000 of a milimeter.

20. Answer 2 – 40 What is a mircrometer (nm)?

21. Question 2 - 50 These are the seven prefixes of the metric system. They are represented by KHDUDCM.

22. Answer 2 – 50 What are kilo-, hecto-, deca-, base unit, deci-, centi-, mili-?

23. Question 3 - 10 All atoms will have the same number of these two subatomic particles. Their positive and negative charges cancel each other out, making the atom neutral.

24. Answer 3 – 10 What are protons and electrons?

25. Question 3 - 20 These produces a higher number of H+ ions when in a solution. They range from 1-6 on the pH scale.

26. Answer 3 – 20 What is an acid?

27. Question 3 - 30 This is the attraction between a H atom and an electronegative atom, such as O. It is the bond that holds water molecules together.

28. Answer 3 – 30 What are hydrogen bonds?

29. Question 3 - 40 Weak acids and bases are found towards the middle of the pH scale, closest to this number. It is the pH of pure water.

30. Answer 3 – 40 What is 7?

31. Question 3 - 50 Our bodies need to maintain a specific range of pH all over, except here, which is much more acidic.

32. Answer 3 – 50 What is the stomach?

33. Question 4 - 10 Enzymes speed up chemical reactions, making them biological ones of these.

34. Answer 4 – 10 What are catalysts?

35. Question 4 - 20 This macromolecule is made up of a glycerol molecule and three fatty acids chains. It helps make up part of the cell membrane.

36. Answer 4 – 20 What are lipids?

37. Question 4 - 30 These macromolecules give us our main source of energy, even if it is only for a short period of time.

38. Answer 4 – 30 What are carbohydrates?

39. Question 4 - 40 Enzyme function can be effected by drastic changes in these two internal conditions.

40. Answer 4 – 40 What are temperature and pH?

41. Question 4 - 50 An amino acid structure contains an amino group, a carboxyl group and this, which is different for each amino acid.

42. Answer 4 – 50 What is the R-group sidechain?

43. Question 5 - 10 These are the two inventors of the microscope. Without them, we would have never discovered the cell.

44. Answer 5 – 10 Who are Robert Hooke and Anton van Leeuwenhoek?

45. Question 5 - 20 This type of microscope uses a very fine probe to view the surface of a specimen. You can see live organisms with it.

46. Answer 5 – 20 What is a scanning probe microscope?

47. Question 5 - 30 In plant cells, this is the outermost layer, which provides structure, support and protection.

48. Answer 5 – 30 What is the cell wall?

49. Question 5 - 40 These are three structures of the cell responsible for making and sending proteins where they need to go.

50. Answer 5 – 40 What are the ribosomes, endoplasmic reticulum and golgi apparatus?

51. Question 5 - 50 This is one characteristic of all cells. In eukaryotic cells it is found in the nucleus. In prokaryotic cells it is free floating.

52. Answer 5 – 50 What is DNA?