TEST BANK FOR INTRODUCTION TO MICROBIOLOGY

Test bank for microbiology an introduction 12th edition, tortora 1. 1. Test Bank For Microbiology An Introduction 12th Edition, Tortora YOU CAN FIND MORE QUESTIONS AND ANSWERS, just go HERE MULTIPLE CHOICE Chapter 1 The Microbial World and You 1) Microorganisms are involved in each of the following processes EXCEPT A) infection. B) decomposition of organic material. C) O2 production. D) food production. E) smog production. 2) Each of the following organisms would be considered a microbe EXCEPT A) yeast. B) protozoan. C) bacterium. D) mushroom. E) virus. 3) The term used to describe a disease-causing microorganism is A) microbe. B) bacterium. C) virus. D) pathogen. E) infection. 4) Common commercial benefits of microorganisms include synthesis of A) riboflavin. B) acetone. C) insulin. D) aspirin. E) riboflavin, acetone and insulin. 5) Commercial utilization of microbial products has become increasingly popular due to their environmentally friendly nature. Production of these products which are readily degraded and, thus, non-toxic typically utilizes A) enzymes. B) organic acids. C) organic solvents. D) soap. E) alcohol. 6) The formal system for classifying and naming organisms was developed by A) Robert Koch. B) Ignaz Semmelweis. C) Aristotle. D) Carolus Linnaeus. E) Louis Pasteur. 7) In the name Staphylococcus aureus, aureus is the 2. 2. A) genus. B) domain name. C) species. D) kingdom. E) family name. 8) A prokaryotic cell may possess each of the following cellular components EXCEPT A) flagella. B) a nucleus. C) ribosomes. D) a cell wall. E) a cell membrane. 9) Which of the following is NOT associated with viruses? A) organelles B) nucleic acid C) envelope D) chemical reactions E) protein coat 10 The bacterial shape of the cells in the scanning electron micrograph shown in Figure 1.1 would best be described as A) bacillus. B) spiral. C) coccus. D) ovoid. E) columnar. Chapter 2 Chemical Principles 1) Which of the following statements about the atom C is FALSE? A) It has 6 protons in its nucleus. B) It has 12 neutrons in its nucleus. C) It has 6 electrons orbiting the nucleus. D) Its atomic number is 6. E) Its atomic weight is 12. 2) Table 2.1 O C H Using the information in Table 2.1, calculate the molecular weight of ethanol, C2H5OH. A) 96 B) 46 C) 34 D) 33 E) The answer cannot be determined. 3) Antacids neutralize acid by the following reaction. Identify the salt in the following equation: Mg(OH)2 + 2HCl → MgCl2 + H2O A) Mg(OH)2 B) HCl C) MgCl2 D) H2O E) None of the answers is correct. 4) Which of the following statements is FALSE? A) Salts readily dissolve in water. B) Water molecules are formed by hydrolysis. C) Water freezes from the top down. 3. 3. D) Water is formed as a part of a dehydration synthesis reaction. E) Water is a polar molecule. 5) Which of the following is the type of bond holding K+ and I– ions in KI? A) ionic bond B) covalent bond C) hydrogen bond 6) Which of the following is the type of bond between molecules of water in a beaker of water? A) ionic bond B) covalent bond C) hydrogen bond 7) What is the type of bond holding hydrogen and oxygen atoms together in a single H2O molecule? A) ionic bond B) covalent bond C) hydrogen bond 8) Identify the following reaction: Glucose + Fructose → Sucrose + Water A) dehydration synthesis reaction B) hydrolysis reaction C) exchange reaction D) reversible reaction E) ionic reaction 9) Identify the following reaction: Lactose + H2O → Glucose + Galactose A) dehydration synthesis reaction B) hydrolysis reaction C) exchange reaction D) reversible reaction E) ionic reaction 10) Identify the following reaction: HCl + NaHCO3 → NaCl + H2CO3 A) dehydration synthesis reaction B) hydrolysis reaction C) exchange reaction D) reversible reaction E) ionic reaction Chapter 3 Observing Microorganisms Through a Microscope 1) Which of the following is NOT equal to 1 mm? A) 0.001 m B) 106 nm C) 0.1 cm D) 100 μm E) 10-3 m 2) What structure does light pass through after S - The Marketplace for Revision Notes & Study Guides Downloaded by: NurseKims | Distribution of this document is illegal S - The Marketplace for Revision Notes & Study Guides leaving the condenser in a compound light microscope? A) ocular lens B) objective lens C) specimen D) illuminator 3) Which of the following pairs is mismatched? A) nigrosin – negative stain B) methylene blue – simple stain C) acidic dye – capsule stain D) basic dye – negative stain E) crystal violet – simple stain 4. 4. 4) Which of the following places the steps of the Gram stain in the correct order? 1-Alcohol-acetone 2-Crystal violet 3-Safranin 4-Iodine A) 1-2-3-4 B) 2-1-4-3 C) 2- 4-1-3 D) 4-3-2-1 E) 1-3-2-4 5) Which of the following pairs is mismatched? A) alcohol-acetone — decolorizer B) crystal violet — basic dye C) safranin — acid dye D) iodine — mordant E) carbolfuchsin — basic dye 6) Which of the following is NOT true regarding the acid-fast stain? A) It is used to identify members of the genus Mycobacterium. B) Acid-fast cells retain the primary dye after treatment with acid-alcohol. C) If cells are acid-fast, they are gram-negative. D) Acidfast cells appear red in a completed acid-fast stain. E) Non-acid-fast microbes appear blue in a completed acid-fast stain. 7) The purpose of a mordant in the Gram stain is to A) remove the simple stain. B) make the bacterial cells larger. C) make the flagella visible. D) prevent the crystal violet from leaving the cells. E) make gram-negative cells visible. 8) Which of the following places the steps in the correct sequence? 1-Staining 2-Making a smear 3-Fixing A) 1-2-3 B) 3-2-1 C) 2-3- 1 D) 1-3-2 E) The order is unimportant. 9) The negative stain is used to A) visualize endospores. B) determine Gram reaction. C) determine flagella arrangement. D) visualize capsules. E) determine cell size. 10) Simple staining is often necessary to improve contrast in which microscope? A) compound light microscope B) phase-contrast microscope C) darkfield microscope D) fluorescence microscope E) electron microscope 5. 5. Chapter 4 Functional Anatomy of Prokaryotic and Eukaryotic Cells 1) Which of the following statements is INCORRECT regarding prokaryotic cells? A) Their DNA is not enclosed within a membrane. B) They lack membrane-enclosed organelles. C) They typically have a circular chromosome. D) They reproduce by binary fission. E) They lack a plasma membrane. 2) Each of the following statements concerning the gram-positive cell wall is true EXCEPT A) it maintains the shape of the cell. B) it is sensitive to lysozyme. C) it protects the cell in a hypertonic environment. D) it contains teichoic acids. E) it is sensitive to penicillin. 3) Which of the following statements best describes what happens when a bacterial cell is placed in a solution containing 5% NaCl? A) Sucrose will move into the cell from a higher to a lower concentration. B) The cell will undergo osmotic lysis. C) Water will move out of the cell. D) Water will move into the cell. E) No change will result; the solution is isotonic. 4) A grampositive bacterium suddenly acquires resistance to the antibiotic methicillin. This trait most likely occurred due to acquisition of new genetic information through A) conjugation. B) binary fission. C) meisosis. D) transformation. E) transduction. 5) By which of the following mechanisms can a cell transport a substance from a lower to a higher concentration? A) simple diffusion B) facilitated diffusion C) active transport D) extracellular enzymes E) aquaporins 6) Which of the following is NOT a typical characteristic of most bacterial plasma membranes? A) site of energy production B) composed of a phospholipid bilayer C) contains proteins D) contains cholesterol E) is selectively permeable 7) Which one of the following organisms has a cell wall? A) protoplasts B) fungi C) L forms D) mycoplasmas E) animal cells 8) Which of the following statements is TRUE? A) Endospores are for reproduction. B) Endospores allow a cell to survive environmental changes by producing a dormant period with no growth. C) Endospores are easily stained in a Gram stain. D) A cell produces one endospore and keeps growing. 6. 6. E) A cell can produce many endospores. 9) Which of the following pairs is mismatched? A) endoplasmic reticulum — internal transport B) Golgi complex —