Testbank For Foundations in Microbiology 8th Edition by Talar

Testbank For Foundations in Microbiology 8th Edition by Talar 1. Anything that occupies space and has mass is called A. an electron. B. livin g. C. matte r. D. energy . E. space . 2. The electrons of an atom are A. always equal to the number of neutrons in an atom. B. found in the nucleus. C. used to determine atomic number. D. positively charged. E. moving in pathways called orbitals. 3. All of the following pertain to the atom 146c except it(s) A. has 6 protons. B. has 6 electrons. C. has 14 neutrons. D. is an isotope of carbon. E. mass number is 14. 4. The subatomic particles that surround the nucleus are the A. electron s. B. proton s. C. neutron s. D. protons and neutrons. E. protons and electrons. 5. Cations are A. charged subatomic particles. B. atoms that have gained electrons. C. radioactive isotopes. D. capable of forming ionic bonds with anions. E. atoms without protons. 6. Isotopes are atoms of the same element that differ in their A. neutron number. B. electron number. C. proton number. D. atomic number. E. chemical properties. 7. What is the maximum number of electrons in the second energy shell of an atom? A. 2 B. 4 C. 8 D. 1 8 E. 3 2 8. Two or more atoms bonded together are called a/an A. ion . B. isotop e. C. elemen t. D. electrolyt e. E. molecul e. 9. What would be the valence number of electrons in the sulfur atom 3216s? A. 2 B. 6 C. 8 D. 1 6 E. 3 2 10. Polar molecules are composed of covalently bonded A. identical atoms. B. carbon atoms. C. ions . D. atoms of different electronegativity. E. atoms of identical electronegativity. 11. Reactions involving electron release are called reactions. A. oxidatio n. B. reductio n. C. ionizatio n. D. decompositio n. E. dissolutio n. 12. Which of the following represents a synthesis reaction? A. AB → A + B B. A + B → AB C. AB + XY → AX + BY D. AB + XY ↔ AX + BY E. None of the choices are correct. 13. The important solvent associated with living things is A. carbon dioxide. B. sodium chloride. C. ethyl alcohol. D. benzen e. E. wate r. 14. Which term does not belong in this list? A. lactic acid B. vineg ar C. hydrogen ion donor D. pH 8 E. acidi c 15. A solution of pH 7 compared to a solution of pH 9 A. is more basic. B. has no OH- ions. C. has more H+ ions. D. has a higher pH. E. All of the choices are correct. 16. What do H2O, NaCl, CO2, and HCl all have in common? A. all salts B. all acids C. all gases D. all inorganic E. all solutes 17. Which of the following functional groups is mismatched to the organic compound? A. phosphate - carbohydrates B. sulfhydryl - proteins C. amino - proteins D. hydroxyl - alcohols E. carboxyl - fatty acids 18. The building blocks of an enzyme are A. nucleotide s. B. glycerol and fatty acids. C. monosaccharid es. D. phosphate, glycerol, fatty acids. E. amino acids. 19. All of the following are monosaccharides except A. glucos e. B. glycoge n. C. fructos e. D. ribos e. E. deoxyribos e. 20. All of the following are lipids except A. cholester ol. B. starc h. C. phospholipi d. D. wax . E. triglycerid e. 21. A monosaccharide with 5 carbon atoms will have hydrogen atoms and oxygen atoms. A. 10, 5 B. 5, 10 C. 5, 5 D. 10, 10 E. 2, 1 22. One nucleotide contains A. one phosphate. B. one pentose. C. one nitrogen base. D. All of the choices are correct. E. None of the choices are correct. 23. Which of the following would have glycosidic bonds? A. triglycerid es B. monosaccharid es C. polypeptid es D. polysaccharid es E. ATP 24. All of the following are polysaccharides, except A. dextran in some bacterial slime layers. B. agar used to make solid culture media. C. a cell's glycocalyx. D. cellulose in certain cell walls. E. prostaglandins in inflammation. 25. What part of a phospholipid forms hydrophobic tails? A. fatty acids B. glycer ol C. phospha te D. alcoh ol E. All of the choices are correct. 26. An amino acid contains all of the following, except A. an amino group. B. a carboxyl group. C. a variable R group. D. an a carbon. E. a nitrogen base. 27. Which pertains to DNA but not to RNA? A. contains ribose B. contains adenine C. contains thymine D. contains uracil E. contains nucleotides 28. ATP is best described as A. an enzyme. B. a double helix. C. an electron carrier. D. the energy molecule of cells. E. All of the choices are correct. 29. Which is not true about enzymes? A. found in all cells B. are catalysts C. participate in the cell's chemical reactions D. can be denaturated by heat and other agents E. have high-energy bonds between phosphates 30. Which amino acid contains sulfur atoms that form covalent disulfide bonds in its tertiary structure? A. valin e B. cystein e C. serin e D. alanin e E. tyrosin e 31. The nucleic acid that delivers the correct amino acid for protein synthesis is A. rRNA . B. DNA . C. tRNA . D. mRNA . E. ATP. 32. The purine bases in nucleic acids include A. thymine and cytosine. B. guanine and adenine. C. cytosine and guanine. D. adenine and thymine. E. ribose and deoxyribose. 33. A weak, attractive force between nearby molecules is called a/an A. hydrogen bond. B. covalent bond. C. ionic bond. D. peptide bond. E. glycosidic bond. 34. A student forgot to label a beaker containing a DNA solution and a beaker containing a glucose solution. If chemical analysis was performed to identify the contents of each beaker, which of the following would be found in the beaker of DNA but not in the beaker with glucose? A. amino acids B. hydrogen and oxygen atoms C. nitrogen and phosphorus D. fatty acids E. carbon atoms 35. C6H12O6 + C6H12O6→ C12 H22O11 + H2O represents A. formation of a peptide bond. B. a decomposition reaction. C. denaturatio n. D. formation of a polysaccharide. E. dehydration synthesis. 36. The atomic number equals the number of an atom possesses. A. neutro ns B. proton s C. protons plus electrons D. neutrons plus protons E. electrons plus protons 37. If carbon has an atomic number of 6 and an atomic mass of 14, how many neutrons does it have? A. 6 B. 7 C. 8 D. 1 4 E. impossible to determine 38. The neutrons of an atom are A. always equal to the number of protons in an atom. B. found in the nucleus. C. used to determine atomic number. D. positively charged. E. moving in pathways called orbitals. 39. Which of the following represents an exchange reaction? A. AB → A + B B. A + B → AB C. X + Y → XYD D. AB + XY ↔ AX + BY E. None of the choices are correct. 40. Jim needs to prepare one liter of a 4% NaCl solution. How much NaCl should he weigh out? A. 0.4 grams B. 4. grams C. 40 grams D. 400 grams E. None of the choices are correct. 41. How many times more acidic is a solution with a pH of 3 than a solution with a pH of 6? A. 3 B. 1 0 C. 100 0 D. 3 6 E. 6 3 42. Which of the following carbohydrates is found in dairy? A. lactos e B. sucros e C. maltos e D. glucos e E. fructos e 43. Which of the following is the stored form of carbohydrates in animals? A. glycoge n B. maltos e C. starc h D. cellulos e E. galactos e 44. All of the following are correct about triglycerides, except A. they are insoluble in water. B. they are a concentrated source of energy. C. when they are unsaturated they are solid. D. they dissolve in nonpolar solvents. E. they are digested by lipases. 45. The type of chemical bond linking amino acids together is a(n) A. glycosidic bond. B. peptide bond. C. ester bond. D. ionic bond. E. hydrogen bond. 46. The a helix and b-pleated sheet are examples of A. primary structure. B. secondary structure. C. tertiary structure. D. quaternary structure. E. gamma structures. 47. The polynucleotide strands of DNA are linked along their length by bonds between the bases. A. covale nt B. ioni c C. Van der Waals D. doubl e E. hydroge n 48. Which of the following examples are NOT hydrophobic? A. Glucos e B. Vegetable oil C. Butt er D. Cholesterol E. Choices B, C, and D are correct 49. A covalent bond is formed between an anion and a cation. True False 50. Electrons that participate in chemical bonding are typically located closest to the nucleus. True False 51. Only charged atoms can form ionic bonds. True False 52. Water molecules are nonpolar molecules. True False 53. Polar molecules have more reactivity compared to nonpolar molecules. True False 54. Elements have predictable chemical properties. True False 55. The concentration of a solution expresses the amount of solvent present. True False 56. If solution A has a lower pH compared to solution B, then solution A is more acidic than solution B. True False 57. The only part of an amino acid that differs from other amino acids is its R group. True False 58. All proteins are enzymes. True False 59. Replication is the cellular mechanism for making a copy of its DNA. True False 60. Nucleic acids have primary, secondary, tertiary, and quaternary levels of organization. True False 61. The total number of protons and neutrons of an element establishes its number. 62. Atoms that gain or lose electrons become charged particles called . 63. Protons and neutrons make up the atom's central core referred to as its . 64. A solution is composed of one or more substances called that are uniformly dispersed in a dissolving medium called a . 65. Organic chemicals always have a basic framework of the element bonded to other atoms. 66. bonds are formed by dehydration synthesis between adjacent amino acids. 67. A fat is called if all carbons of the fatty acid chain are single bonded to 2 other carbons and 2 hydrogens. 68. Purines and pyrimidines are components in the building block units of all . 69. During protein synthesis, RNA is made to be a copy of a gene from the DNA. 70. In reproduction, offspring arise from the division of a single parent cell into two identical progeny cells. 71. Certain antibiotics are effective against bacteria that cause human infections because they target prokaryotic ribosomes. Discuss, in detail, how the drug attacking a pathogen's ribosomes will affect the cell. Discuss at least 3 specific detrimental results. 72. Explain what radioisotopes are, and describe how they can be used to monitor the uptake of a specific biochemical by a microbial culture. 73. Compare and contrast the chemical and functional characteristics of DNA and RNA molecules. 74. Identify and provide specific examples of the classes of macromolecules that are associated with life. Chapter 02 Testbank Key 1. Anything that occupies space and has mass is called A. an electron. B. livin g. C. matte r. D. energy . E. space . Learning objective: 02.01 Describe the properties of atoms and identify the relationships of the particles that they contain. 2. The electrons of an atom are A. always equal to the number of neutrons in an atom. B. found in the nucleus. C. used to determine atomic number. D. positively charged. E. moving in pathways called orbitals. Learning objective: 02.01 Describe the properties of atoms and identify the relationships of the particles that they contain. 3. All of the following pertain to the atom 146c except it(s) A. has 6 protons. B. has 6 electrons. C. has 14 neutrons. D. is an isotope of carbon. E. mass number is 14. Learning objective: 02.01 Describe the properties of atoms and identify the relationships of the particles that they contain. Learning objective: 02.03 Explain the differences between atomic number, mass number, and atomic weight. 4. The subatomic particles that surround the nucleus are the A. electron s. B. proton s. C. neutron s. D. protons and neutrons. E. protons and electrons. Learning objective: 02.01 Describe the properties of atoms and identify the relationships of the particles that they contain. 5. Cations are A. charged subatomic particles. B. atoms that have gained electrons. C. radioactive isotopes. D. capable of forming ionic bonds with anions. E. atoms without protons. Learning objective: 02.10 Describe ionization and distinguish between anions and cations. 6. Isotopes are atoms of the same element that differ in their A. neutron number. B. electron number. C. proton number. D. atomic number. E. chemical properties. Learning objective: 02.02 Characterize elements and their isotopes. 7. What is the maximum number of electrons in the second energy shell of an atom? A. 2 B. 4 C. 8 D. 1 8 E. 3 2 Learning objective: 02.05 Describe the electron orbitals and energy shells and how they are filled. 8. Two or more atoms bonded together are called a/an A. ion . B. isotop e. C. elemen t. D. electrolyt e. E. molecul e. Learning objective: 02.06 Explain how elements make chemical bonds to form molecules and compounds. 9. What would be the valence number of electrons in the sulfur atom 3216s? A. 2 B. 6 C. 8 D. 1 6 E. 3 2 Learning objective: 02.05 Describe the electron orbitals and energy shells and how they are filled. 10. Polar molecules are composed of covalently bonded A. identical atoms. B. carbon atoms. C. ions . D. atoms of different electronegativity. E. atoms of identical electronegativity.