BIOLOGY 110 EXAM 1

SPRING 2001

1. What is the row number and seat number of your assigned seat?

2. How many centimeters are in one meter?

3. How many milligrams are in one gram?

4. Which is longer?

  1. 1 centimeter;
  2. 1 millimeter;
  3. they are the same length

5. One inch contains how many centimeters?

6. One pound contains how many grams?

7. True or False: All dogs are members of the same species.

8. Which of the following is the best "one word definition" for evolution?

  1. evil;
  2. bad;
  3. irrelevant;
  4. change;
  5. species;
  6. ears

9. Artificial selection involves selection by which of the following agents?

  1. predators;
  2. humans;
  3. diseases;
  4. weather;
  5. all of these

10. Which is the best ear length for a rabbit?

  1. long;
  2. short;
  3. medium;
  4. depends on the climate and environment

11. Which of the following is the best indicator of biological success?

  1. size;
  2. weight;
  3. color;
  4. leg length;
  5. none of these measures biological success

12. True or False: All gray squirrels produce the same number of offspring.

13. True or False: All electrons contain energy.

14. True or False: All electrons contain the same amount of energy.

15. How many electrons are present in the first shell of a carbon atom before the carbon atom reacts with another atom?

16. How many electrons are present in the second shell of a carbon atom before the carbon atom reacts with another atom?

17. Which of these is the outermost electron shell of a carbon atom before it reacts with another atom?

Number 1; Number 2; Number 3; Number 4

18. How many electrons revolve around a hydrogen atom after it reacts and becomes stable?

19. What is the atomic number of oxygen?

20. How many protons are present in the nucleus of every oxygen atom?

21. True or False Every carbon atom contains exactly the same number of neutrons.

22. True or False All ions have either a negative or a positive electrical charge.

23. An ion with 10 electrons has one negative charge. How many protons are present in the ion?

24. The attraction between two ions with opposite charges describes which of the following?

  1. hydrogen bond;
  2. ionic bond;
  3. covalent bond;
  4. all of these

25. Which of the following is the weakest?

  1. hydrogen bond;
  2. ionic bond;
  3. covalent bond;
  4. all are of equal strength

26. A single covalent bond involves the sharing of how many electrons?

  1. one;
  2. two;
  3. three;
  4. four or more

27. In a polarized covalent bond, the electrons are:

  1. shared equally by two atoms;
  2. shared unequally by two atoms;
  3. moved into the nucleus of the atom;
  4. destroyed

28. How many atoms are present in one molecule of water?

29. How many covalent bonds are present in one molecule of water?

30. Surface tension of water is due to:

  1. adhesion;
  2. cohesion;
  3. capillary action;
  4. sunlight reflecting off of the water

31. Temperature is actually a measure of:

  1. how hot something is;
  2. how cold something is;
  3. how fast molecules are moving;
  4. which direction the wind is blowing

32. To change liquid water into steam, which type of bonds must be broken?

  1. hydrogen;
  2. covalent;
  3. ionic;
  4. none of these

33. How many protons are present in one molecule of water?

34. How many electrons are present in one molecule of water?

35. True or False A water molecule is an example of an ion.

36. Which of the following is the strongest acid? A substance with a pH of:

  1. 6;
  2. 4;
  3. 10;
  4. 14

37. All of the enzymes that we study in Biology 110 are composed of:

  1. fats;
  2. carbohydrates;
  3. nucleic acids;
  4. proteins

38. True or False All catalysts are enzymes.

39. Name one catalyst that is not a protein.

40. One enzyme can influence the rate of how many different types of chemical reactions?

41. If 1,234 different kinds of chemical reactions occur in a cell, how many different kinds of enzymes are probably present in the cell?

42. The enzyme hydrogen peroxidase (formerly called catalase) increases the rate at which hydrogen peroxide is broken into water and oxygen. Name a reactant in this reaction.

43. Name one product in the reaction described in question 42.

44. Name the catalyst involved in the reaction described in question 42.

45. Why does my dog (a beagle) not have green hair?

  1. she does not need green hair;
  2. green hair would be too warm;
  3. no dogs can manufacture green pigments;
  4. she does not have the enzyme that controls the reaction that produces green hair pigments.

46. A substance that is hydrophobic:

  1. will dissolve in water;
  2. will not dissolve in water;
  3. may or may not dissolve in water

47. Which of the following has the greatest density?

  1. liquid water;
  2. ice;
  3. steam

48. If ice sank in liquid water:

  1. no living organisms would be affected;
  2. local ponds would probably freeze solid, from the bottom up;
  3. we would not need air conditioning in the school buildings

49. Which of the following involves the transfer of one or more electrons from one atom to another atom?

  1. covalent bonding;
  2. ionic bonding;
  3. hydrogen bonding;
  4. all of these

50. Which of the following organisms contains genetic instructions in its own cells for the manufacturing of cellulase?

  1. humans;
  2. cows;
  3. termites;
  4. none of these

[David Pitts]