Principles of Biology Exam One

1. In the hierarchy of life, which of the following is ranked "incorrectly":

2. Which taxonomic group comes immediately before genus?

3. Which of the following is correct way to write the scientific name of the green sea urchin whose species is droebachiensis and whose genus is strongylocentrotus?

4. Which of the following is not a taxonomic domain?

5. Which of the following lists of elements make up ~ 96% of the weight of the human body?

6. Which of the following is a trace element?

7. An atom with 6 electrons, has how many electrons in its outermost shell?

8. Which type of bond occurs between atoms sharing electrons

9. What type of bond exists between water molecules?

10. In a water molecule, where do the shared electrons spend most of their time?

11. A carbon atom has how many electrons in its outermost shell?

12. Which functional group of organic compounds contains a hydrogen atom bonded to an oxygen atom?

13. Which of the following functional groups is non-polar?

14. A carbonyl group bonded to hydroxyl group 'looks' like:

15. A carbonyl group bonded to a hydroxyl group, the resulting functional group is called

16. Methane is:

17. An unlinked monomer has a ______ at one end, and a ______ at the other.

18. True or False. To break a polymer into its respective monomers, a cell must perform a hydrolysis reaction...

19. The structural carbohydrate used by plants is:

20. The storage carbohydrate used by plants is:

21. Which of the following is not a disaccharide?

22. Which of the following is not a lipid?

23. A fat molecule contains

24. True or false: Saturated fats are solid at room temperature ______

25. Which of the following has double bonds?

26. Which of the following is the major component of cell membranes?

27. The monomers that make up a nucleic acid polymer are:

28. The ______ sequence is the overall, 3-dimensional shape of a protein.

29. ________ sequence occurs when 2 or more polypeptides link together.

30. True or False: Amino acids with a non-polar "R" group are hydrophobic _______

31. A prion is an infectious:

32. Which of the following is not a prion disease?

33. What can you say with certainty about a food that contains only carbon, hydrogen and oxygen atoms?

34. Nucleotides are made of:

35. In DNA molecule, the nitrogenous base pairs are held together by what type of bond?

36. A scientist suspect that the food in an ecosystem may be contaminated with radioactive nitrogen. Which of the following substances should be examined for radioactivity to confirm the presence of radioactive nitrogen? *hint: think about which of the following foods would contain nitrogen

37. When two monomers combine to form a polymer,

38. Estrogen is a:

39. The complimentary strand to CTAGGT is:

40. In RNA, adenine always bonds with:

41. Nucleotides are:

42. True or False. Lipids contain half as much energy as carbohydrates _____

43. Which of the following organic compounds contain nitrogenous bases?

44. Which of the following is not part of the cell theory?

45. Which of the following is NOT a characteristic of all cells?

46. True or False: Prokaryotic cells are smaller than eukaryotic cells ______

47. Rough endoplasmic reticulum is lined with:

48. An ovarian cell that produces a large amount of estrogen (lipid) would contain a relatively high concentration of:

49. The core of flagella or cilia consist of:

50. Which of the following is the thinnest?